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Diffstat (limited to 'user_guide/tutorial')
| -rw-r--r-- | user_guide/tutorial/conclusion.html | 516 | ||||
| -rw-r--r-- | user_guide/tutorial/create_news_items.html | 630 | ||||
| -rw-r--r-- | user_guide/tutorial/index.html | 526 | ||||
| -rw-r--r-- | user_guide/tutorial/news_section.html | 686 | ||||
| -rw-r--r-- | user_guide/tutorial/static_pages.html | 634 |
5 files changed, 2992 insertions, 0 deletions
diff --git a/user_guide/tutorial/conclusion.html b/user_guide/tutorial/conclusion.html new file mode 100644 index 000000000..bc0cf54f9 --- /dev/null +++ b/user_guide/tutorial/conclusion.html @@ -0,0 +1,516 @@ + + +<!DOCTYPE html> +<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> +<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1.0"> + + <title>Conclusion — CodeIgniter 3.1.5 documentation</title> + + + + + <link rel="shortcut icon" href="../_static/ci-icon.ico"/> + + + + <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'> + + + + + + + + + + <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" /> + + + + <link rel="top" title="CodeIgniter 3.1.5 documentation" href="../index.html"/> + <link rel="up" 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href="../contributing/index.html">Contributing to CodeIgniter</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li> +<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/encrypt.html">Encrypt Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Library</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/file_uploading.html">File Uploading Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/form_validation.html">Form Validation</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/ftp.html">FTP Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/image_lib.html">Image Manipulation Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li> +</ul> +</li> +</ul> + + + + </div> + + </nav> + + <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> + + + <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> + <i data-toggle="wy-nav-top" class="fa fa-bars"></i> + <a href="../index.html">CodeIgniter</a> + </nav> + + + + <div class="wy-nav-content"> + <div class="rst-content"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs"> + <li><a href="../index.html">Docs</a> »</li> + + <li><a href="index.html">Tutorial</a> »</li> + + <li>Conclusion</li> + <li class="wy-breadcrumbs-aside"> + + </li> + <div style="float:right;margin-left:5px;" id="closeMe"> + <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> + </div> + </ul> + <hr/> +</div> + <div role="main" class="document"> + + <div class="section" id="conclusion"> +<h1>Conclusion<a class="headerlink" href="#conclusion" title="Permalink to this headline">¶</a></h1> +<p>This tutorial did not cover all of the things you might expect of a +full-fledged content management system, but it introduced you to the +more important topics of routing, writing controllers, and models. We +hope this tutorial gave you an insight into some of CodeIgniter’s basic +design patterns, which you can expand upon.</p> +<p>Now that you’ve completed this tutorial, we recommend you check out the +rest of the documentation. CodeIgniter is often praised because of its +comprehensive documentation. Use this to your advantage and read the +“Introduction” and “General Topics” sections thoroughly. You should read +the class and helper references when needed.</p> +<p>Every intermediate PHP programmer should be able to get the hang of +CodeIgniter within a few days.</p> +<p>If you still have questions about the framework or your own CodeIgniter +code, you can:</p> +<ul class="simple"> +<li>Check out our <a class="reference external" href="http://forum.codeigniter.com/">forums</a></li> +<li>Visit our <a class="reference external" href="https://github.com/bcit-ci/CodeIgniter/wiki/IRC">IRC chatroom</a></li> +<li>Explore the <a class="reference external" href="https://github.com/bcit-ci/CodeIgniter/wiki/">Wiki</a></li> +</ul> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="../general/credits.html" class="btn btn-neutral float-right" title="Credits">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="create_news_items.html" class="btn btn-neutral" title="Create news items"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2017, British Columbia Institute of Technology. + Last updated on Jun 19, 2017. + </p> + </div> + + Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. + +</footer> + </div> + </div> + + </section> + + </div> + + + + + + <script type="text/javascript"> + var DOCUMENTATION_OPTIONS = { + URL_ROOT:'../', + VERSION:'3.1.5', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; + </script> + <script type="text/javascript" src="../_static/jquery.js"></script> + <script type="text/javascript" src="../_static/underscore.js"></script> + <script type="text/javascript" src="../_static/doctools.js"></script> + + + + + + <script type="text/javascript" src="../_static/js/theme.js"></script> + + + + + <script type="text/javascript"> + jQuery(function () { + SphinxRtdTheme.StickyNav.enable(); + }); + </script> + + +</body> +</html>
\ No newline at end of file diff --git a/user_guide/tutorial/create_news_items.html b/user_guide/tutorial/create_news_items.html new file mode 100644 index 000000000..1124d32c3 --- /dev/null +++ b/user_guide/tutorial/create_news_items.html @@ -0,0 +1,630 @@ + + +<!DOCTYPE html> +<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> +<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1.0"> + + <title>Create news items — CodeIgniter 3.1.5 documentation</title> + + + + + <link rel="shortcut icon" href="../_static/ci-icon.ico"/> + + + + <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'> + + + + + + + + + + <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" /> + + + + <link rel="top" title="CodeIgniter 3.1.5 documentation" href="../index.html"/> + <link rel="up" title="Tutorial" href="index.html"/> + <link rel="next" title="Conclusion" href="conclusion.html"/> + <link rel="prev" title="News section" href="news_section.html"/> + + + <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script> + +</head> + +<body class="wy-body-for-nav" role="document"> + + <div id="nav"> + <div id="nav_inner"> + + + + <div id="pulldown-menu" class="ciNav"> + <ul> +<li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a><ul class="simple"> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li> +<li class="toctree-l2"><a class="reference internal" href="../installation/index.html">Installation Instructions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li> +<li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li> +</ul> +</li> +</ul> +<ul class="current"> +<li class="toctree-l1 current"><a class="reference internal" href="index.html">Tutorial</a><ul class="current"> +<li class="toctree-l2"><a class="reference internal" href="static_pages.html">Static pages</a></li> +<li class="toctree-l2"><a class="reference internal" href="news_section.html">News section</a></li> +<li class="toctree-l2 current"><a class="current reference internal" href="">Create news items</a></li> +<li class="toctree-l2"><a class="reference internal" href="conclusion.html">Conclusion</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li> +<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li> +<li class="toctree-l2"><a class="reference internal" 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class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li> +</ul> +</li> +</ul> + + + + </div> + + </nav> + + <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> + + + <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> + <i data-toggle="wy-nav-top" class="fa fa-bars"></i> + <a href="../index.html">CodeIgniter</a> + </nav> + + + + <div class="wy-nav-content"> + <div class="rst-content"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs"> + <li><a href="../index.html">Docs</a> »</li> + + <li><a href="index.html">Tutorial</a> »</li> + + <li>Create news items</li> + <li class="wy-breadcrumbs-aside"> + + </li> + <div style="float:right;margin-left:5px;" id="closeMe"> + <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> + </div> + </ul> + <hr/> +</div> + <div role="main" class="document"> + + <div class="section" id="create-news-items"> +<h1>Create news items<a class="headerlink" href="#create-news-items" title="Permalink to this headline">¶</a></h1> +<p>You now know how you can read data from a database using CodeIgniter, but +you haven’t written any information to the database yet. In this section +you’ll expand your news controller and model created earlier to include +this functionality.</p> +<div class="section" id="create-a-form"> +<h2>Create a form<a class="headerlink" href="#create-a-form" title="Permalink to this headline">¶</a></h2> +<p>To input data into the database you need to create a form where you can +input the information to be stored. This means you’ll be needing a form +with two fields, one for the title and one for the text. You’ll derive +the slug from our title in the model. Create the new view at +<em>application/views/news/create.php</em>.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">h2</span><span class="o">><?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$title</span><span class="p">;</span> <span class="cp">?></span><span class="p"></</span><span class="nt">h2</span><span class="p">></span> + +<span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">validation_errors</span><span class="p">();</span> <span class="cp">?></span> + +<span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">form_open</span><span class="p">(</span><span class="s1">'news/create'</span><span class="p">);</span> <span class="cp">?></span> + + <span class="p"><</span><span class="nt">label</span> <span class="na">for</span><span class="o">=</span><span class="s">"title"</span><span class="p">></span>Title<span class="p"></</span><span class="nt">label</span><span class="p">></span> + <span class="p"><</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">"input"</span> <span class="na">name</span><span class="o">=</span><span class="s">"title"</span> <span class="p">/><</span><span class="nt">br</span> <span class="p">/></span> + + <span class="p"><</span><span class="nt">label</span> <span class="na">for</span><span class="o">=</span><span class="s">"text"</span><span class="p">></span>Text<span class="p"></</span><span class="nt">label</span><span class="p">></span> + <span class="p"><</span><span class="nt">textarea</span> <span class="na">name</span><span class="o">=</span><span class="s">"text"</span><span class="p">></</span><span class="nt">textarea</span><span class="p">><</span><span class="nt">br</span> <span class="p">/></span> + + <span class="p"><</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">"submit"</span> <span class="na">name</span><span class="o">=</span><span class="s">"submit"</span> <span class="na">value</span><span class="o">=</span><span class="s">"Create news item"</span> <span class="p">/></span> + +<span class="p"></</span><span class="nt">form</span><span class="p">></span> +</pre></div> +</div> +<p>There are only two things here that probably look unfamiliar to you: the +<tt class="docutils literal"><span class="pre">form_open()</span></tt> function and the <tt class="docutils literal"><span class="pre">validation_errors()</span></tt> function.</p> +<p>The first function is provided by the <a class="reference internal" href="../helpers/form_helper.html"><em>form +helper</em></a> and renders the form element and +adds extra functionality, like adding a hidden <a class="reference internal" href="../libraries/security.html"><em>CSRF prevention +field</em></a>. The latter is used to report +errors related to form validation.</p> +<p>Go back to your news controller. You’re going to do two things here, +check whether the form was submitted and whether the submitted data +passed the validation rules. You’ll use the <a class="reference internal" href="../libraries/form_validation.html"><em>form +validation</em></a> library to do this.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">public</span> <span class="k">function</span> <span class="nf">create</span><span class="p">()</span> +<span class="p">{</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">helper</span><span class="p">(</span><span class="s1">'form'</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'form_validation'</span><span class="p">);</span> + + <span class="nv">$data</span><span class="p">[</span><span class="s1">'title'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'Create a news item'</span><span class="p">;</span> + + <span class="nv">$this</span><span class="o">-></span><span class="na">form_validation</span><span class="o">-></span><span class="na">set_rules</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'Title'</span><span class="p">,</span> <span class="s1">'required'</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">form_validation</span><span class="o">-></span><span class="na">set_rules</span><span class="p">(</span><span class="s1">'text'</span><span class="p">,</span> <span class="s1">'Text'</span><span class="p">,</span> <span class="s1">'required'</span><span class="p">);</span> + + <span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">form_validation</span><span class="o">-></span><span class="na">run</span><span class="p">()</span> <span class="o">===</span> <span class="k">FALSE</span><span class="p">)</span> + <span class="p">{</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'templates/header'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'news/create'</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'templates/footer'</span><span class="p">);</span> + + <span class="p">}</span> + <span class="k">else</span> + <span class="p">{</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">news_model</span><span class="o">-></span><span class="na">set_news</span><span class="p">();</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'news/success'</span><span class="p">);</span> + <span class="p">}</span> +<span class="p">}</span> +</pre></div> +</div> +<p>The code above adds a lot of functionality. The first few lines load the +form helper and the form validation library. After that, rules for the +form validation are set. The <tt class="docutils literal"><span class="pre">set_rules()</span></tt> method takes three arguments; +the name of the input field, the name to be used in error messages, and +the rule. In this case the title and text fields are required.</p> +<p>CodeIgniter has a powerful form validation library as demonstrated +above. You can read <a class="reference internal" href="../libraries/form_validation.html"><em>more about this library +here</em></a>.</p> +<p>Continuing down, you can see a condition that checks whether the form +validation ran successfully. If it did not, the form is displayed, if it +was submitted <strong>and</strong> passed all the rules, the model is called. After +this, a view is loaded to display a success message. Create a view at +<em>application/views/news/success.php</em> and write a success message.</p> +</div> +<div class="section" id="model"> +<h2>Model<a class="headerlink" href="#model" title="Permalink to this headline">¶</a></h2> +<p>The only thing that remains is writing a method that writes the data to +the database. You’ll use the Query Builder class to insert the +information and use the input library to get the posted data. Open up +the model created earlier and add the following:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">public</span> <span class="k">function</span> <span class="nf">set_news</span><span class="p">()</span> +<span class="p">{</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">helper</span><span class="p">(</span><span class="s1">'url'</span><span class="p">);</span> + + <span class="nv">$slug</span> <span class="o">=</span> <span class="nx">url_title</span><span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="s1">'title'</span><span class="p">),</span> <span class="s1">'dash'</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> + + <span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="s1">'title'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="s1">'title'</span><span class="p">),</span> + <span class="s1">'slug'</span> <span class="o">=></span> <span class="nv">$slug</span><span class="p">,</span> + <span class="s1">'text'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="s1">'text'</span><span class="p">)</span> + <span class="p">);</span> + + <span class="k">return</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="s1">'news'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> +<span class="p">}</span> +</pre></div> +</div> +<p>This new method takes care of inserting the news item into the database. +The third line contains a new function, url_title(). This function - +provided by the <a class="reference internal" href="../helpers/url_helper.html"><em>URL helper</em></a> - strips down +the string you pass it, replacing all spaces by dashes (-) and makes +sure everything is in lowercase characters. This leaves you with a nice +slug, perfect for creating URIs.</p> +<p>Let’s continue with preparing the record that is going to be inserted +later, inside the <tt class="docutils literal"><span class="pre">$data</span></tt> array. Each element corresponds with a column in +the database table created earlier. You might notice a new method here, +namely the <tt class="docutils literal"><span class="pre">post()</span></tt> method from the <a class="reference internal" href="../libraries/input.html"><em>input +library</em></a>. This method makes sure the data is +sanitized, protecting you from nasty attacks from others. The input +library is loaded by default. At last, you insert our <tt class="docutils literal"><span class="pre">$data</span></tt> array into +our database.</p> +</div> +<div class="section" id="routing"> +<h2>Routing<a class="headerlink" href="#routing" title="Permalink to this headline">¶</a></h2> +<p>Before you can start adding news items into your CodeIgniter application +you have to add an extra rule to <em>config/routes.php</em> file. Make sure your +file contains the following. This makes sure CodeIgniter sees ‘create’ +as a method instead of a news item’s slug.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$route</span><span class="p">[</span><span class="s1">'news/create'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'news/create'</span><span class="p">;</span> +<span class="nv">$route</span><span class="p">[</span><span class="s1">'news/(:any)'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'news/view/$1'</span><span class="p">;</span> +<span class="nv">$route</span><span class="p">[</span><span class="s1">'news'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'news'</span><span class="p">;</span> +<span class="nv">$route</span><span class="p">[</span><span class="s1">'(:any)'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'pages/view/$1'</span><span class="p">;</span> +<span class="nv">$route</span><span class="p">[</span><span class="s1">'default_controller'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'pages/view'</span><span class="p">;</span> +</pre></div> +</div> +<p>Now point your browser to your local development environment where you +installed CodeIgniter and add index.php/news/create to the URL. +Congratulations, you just created your first CodeIgniter application! +Add some news and check out the different pages you made.</p> +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="conclusion.html" class="btn btn-neutral float-right" title="Conclusion">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="news_section.html" class="btn btn-neutral" title="News section"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2017, British Columbia Institute of Technology. + Last updated on Jun 19, 2017. + </p> + </div> + + Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. + +</footer> + </div> + </div> + + </section> + + </div> + + + + + + <script type="text/javascript"> + var DOCUMENTATION_OPTIONS = { + URL_ROOT:'../', + VERSION:'3.1.5', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; + </script> + <script type="text/javascript" src="../_static/jquery.js"></script> + <script type="text/javascript" src="../_static/underscore.js"></script> + <script type="text/javascript" src="../_static/doctools.js"></script> + + + + + + <script type="text/javascript" src="../_static/js/theme.js"></script> + + + + + <script type="text/javascript"> + jQuery(function () { + SphinxRtdTheme.StickyNav.enable(); + }); + </script> + + +</body> +</html>
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+<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li> +</ul> +</li> +</ul> +<ul class="current"> +<li class="toctree-l1 current"><a class="current reference internal" href="">Tutorial</a><ul> +<li class="toctree-l2"><a class="reference internal" href="static_pages.html">Static pages</a></li> +<li class="toctree-l2"><a class="reference internal" href="news_section.html">News section</a></li> +<li class="toctree-l2"><a class="reference internal" href="create_news_items.html">Create news items</a></li> +<li class="toctree-l2"><a class="reference internal" href="conclusion.html">Conclusion</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li> +<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/encrypt.html">Encrypt Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Library</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/file_uploading.html">File Uploading Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/form_validation.html">Form Validation</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/ftp.html">FTP Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/image_lib.html">Image Manipulation Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li> +</ul> +</li> +</ul> + + + + </div> + + </nav> + + <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> + + + <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> + <i data-toggle="wy-nav-top" class="fa fa-bars"></i> + <a href="../index.html">CodeIgniter</a> + </nav> + + + + <div class="wy-nav-content"> + <div class="rst-content"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs"> + <li><a href="../index.html">Docs</a> »</li> + + <li>Tutorial</li> + <li class="wy-breadcrumbs-aside"> + + </li> + <div style="float:right;margin-left:5px;" id="closeMe"> + <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> + </div> + </ul> + <hr/> +</div> + <div role="main" class="document"> + + <div class="section" id="tutorial"> +<h1>Tutorial<a class="headerlink" href="#tutorial" title="Permalink to this headline">¶</a></h1> +<p>This tutorial is intended to introduce you to the CodeIgniter framework +and the basic principles of MVC architecture. It will show you how a +basic CodeIgniter application is constructed in step-by-step fashion.</p> +<p>In this tutorial, you will be creating a <strong>basic news application</strong>. You +will begin by writing the code that can load static pages. Next, you +will create a news section that reads news items from a database. +Finally, you’ll add a form to create news items in the database.</p> +<p>This tutorial will primarily focus on:</p> +<ul class="simple"> +<li>Model-View-Controller basics</li> +<li>Routing basics</li> +<li>Form validation</li> +<li>Performing basic database queries using “Query Builder”</li> +</ul> +<p>The entire tutorial is split up over several pages, each explaining a +small part of the functionality of the CodeIgniter framework. You’ll go +through the following pages:</p> +<ul class="simple"> +<li>Introduction, this page, which gives you an overview of what to +expect.</li> +<li><a class="reference internal" href="static_pages.html"><em>Static pages</em></a>, which will teach you the basics +of controllers, views and routing.</li> +<li><a class="reference internal" href="news_section.html"><em>News section</em></a>, where you’ll start using models +and will be doing some basic database operations.</li> +<li><a class="reference internal" href="create_news_items.html"><em>Create news items</em></a>, which will introduce +more advanced database operations and form validation.</li> +<li><a class="reference internal" href="conclusion.html"><em>Conclusion</em></a>, which will give you some pointers on +further reading and other resources.</li> +</ul> +<p>Enjoy your exploration of the CodeIgniter framework.</p> +<div class="toctree-wrapper compound"> +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="static_pages.html" class="btn btn-neutral float-right" title="Static pages">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="../helpers/xml_helper.html" class="btn btn-neutral" title="XML Helper"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2017, British Columbia Institute of Technology. + Last updated on Jun 19, 2017. + </p> + </div> + + Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. + +</footer> + </div> + </div> + + </section> + + </div> + + + + + + <script type="text/javascript"> + var DOCUMENTATION_OPTIONS = { + URL_ROOT:'../', + VERSION:'3.1.5', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; + </script> + <script type="text/javascript" src="../_static/jquery.js"></script> + <script type="text/javascript" src="../_static/underscore.js"></script> + <script type="text/javascript" src="../_static/doctools.js"></script> + + + + + + <script type="text/javascript" src="../_static/js/theme.js"></script> + + + + + <script type="text/javascript"> + jQuery(function () { + SphinxRtdTheme.StickyNav.enable(); + }); + </script> + + +</body> +</html>
\ No newline at end of file diff --git a/user_guide/tutorial/news_section.html b/user_guide/tutorial/news_section.html new file mode 100644 index 000000000..b15072712 --- /dev/null +++ b/user_guide/tutorial/news_section.html @@ -0,0 +1,686 @@ + + +<!DOCTYPE html> +<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> +<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1.0"> + + <title>News section — CodeIgniter 3.1.5 documentation</title> + + + + + <link rel="shortcut icon" href="../_static/ci-icon.ico"/> + + + + <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'> + + + + + + + + + + <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" /> + + + + <link rel="top" title="CodeIgniter 3.1.5 documentation" href="../index.html"/> + <link rel="up" title="Tutorial" href="index.html"/> + <link rel="next" title="Create news items" href="create_news_items.html"/> + <link rel="prev" title="Static pages" href="static_pages.html"/> + + + <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script> + +</head> + +<body class="wy-body-for-nav" role="document"> + + <div id="nav"> + <div id="nav_inner"> + + + + <div id="pulldown-menu" class="ciNav"> + <ul> +<li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a><ul class="simple"> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li> +<li class="toctree-l2"><a class="reference internal" href="../installation/index.html">Installation Instructions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li> +<li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li> +</ul> +</li> +</ul> +<ul class="current"> +<li class="toctree-l1 current"><a class="reference internal" href="index.html">Tutorial</a><ul class="current"> +<li class="toctree-l2"><a class="reference internal" href="static_pages.html">Static pages</a></li> +<li class="toctree-l2 current"><a class="current reference internal" href="">News section</a></li> +<li class="toctree-l2"><a class="reference internal" href="create_news_items.html">Create news items</a></li> +<li class="toctree-l2"><a class="reference internal" href="conclusion.html">Conclusion</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li> +<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li> +<li class="toctree-l2"><a 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Manipulation Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li> +</ul> +</li> +</ul> + + + + </div> + + </nav> + + <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> + + + <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> + <i data-toggle="wy-nav-top" class="fa fa-bars"></i> + <a href="../index.html">CodeIgniter</a> + </nav> + + + + <div class="wy-nav-content"> + <div class="rst-content"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs"> + <li><a href="../index.html">Docs</a> »</li> + + <li><a href="index.html">Tutorial</a> »</li> + + <li>News section</li> + <li class="wy-breadcrumbs-aside"> + + </li> + <div style="float:right;margin-left:5px;" id="closeMe"> + <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> + </div> + </ul> + <hr/> +</div> + <div role="main" class="document"> + + <div class="section" id="news-section"> +<h1>News section<a class="headerlink" href="#news-section" title="Permalink to this headline">¶</a></h1> +<p>In the last section, we went over some basic concepts of the framework +by writing a class that includes static pages. We cleaned up the URI by +adding custom routing rules. Now it’s time to introduce dynamic content +and start using a database.</p> +<div class="section" id="setting-up-your-model"> +<h2>Setting up your model<a class="headerlink" href="#setting-up-your-model" title="Permalink to this headline">¶</a></h2> +<p>Instead of writing database operations right in the controller, queries +should be placed in a model, so they can easily be reused later. Models +are the place where you retrieve, insert, and update information in your +database or other data stores. They represent your data.</p> +<p>Open up the <em>application/models/</em> directory and create a new file called +<em>News_model.php</em> and add the following code. Make sure you’ve configured +your database properly as described <a class="reference internal" href="../database/configuration.html"><em>here</em></a>.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> +<span class="k">class</span> <span class="nc">News_model</span> <span class="k">extends</span> <span class="nx">CI_Model</span> <span class="p">{</span> + + <span class="k">public</span> <span class="k">function</span> <span class="nf">__construct</span><span class="p">()</span> + <span class="p">{</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">database</span><span class="p">();</span> + <span class="p">}</span> +<span class="p">}</span> +</pre></div> +</div> +<p>This code looks similar to the controller code that was used earlier. It +creates a new model by extending <tt class="docutils literal"><span class="pre">CI_Model</span></tt> and loads the database +library. This will make the database class available through the +<tt class="docutils literal"><span class="pre">$this->db</span></tt> object.</p> +<p>Before querying the database, a database schema has to be created. +Connect to your database and run the SQL command below (MySQL). +Also add some seed records.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">CREATE</span> <span class="nx">TABLE</span> <span class="nx">news</span> <span class="p">(</span> + <span class="nx">id</span> <span class="nx">int</span><span class="p">(</span><span class="mi">11</span><span class="p">)</span> <span class="k">NOT</span> <span class="k">NULL</span> <span class="nx">AUTO_INCREMENT</span><span class="p">,</span> + <span class="nx">title</span> <span class="nx">varchar</span><span class="p">(</span><span class="mi">128</span><span class="p">)</span> <span class="k">NOT</span> <span class="k">NULL</span><span class="p">,</span> + <span class="nx">slug</span> <span class="nx">varchar</span><span class="p">(</span><span class="mi">128</span><span class="p">)</span> <span class="k">NOT</span> <span class="k">NULL</span><span class="p">,</span> + <span class="nx">text</span> <span class="nx">text</span> <span class="k">NOT</span> <span class="k">NULL</span><span class="p">,</span> + <span class="nx">PRIMARY</span> <span class="nx">KEY</span> <span class="p">(</span><span class="nx">id</span><span class="p">),</span> + <span class="nx">KEY</span> <span class="nx">slug</span> <span class="p">(</span><span class="nx">slug</span><span class="p">)</span> +<span class="p">);</span> +</pre></div> +</div> +<p>Now that the database and a model have been set up, you’ll need a method +to get all of our posts from our database. To do this, the database +abstraction layer that is included with CodeIgniter — +<a class="reference internal" href="../database/query_builder.html"><em>Query Builder</em></a> — is used. This makes it +possible to write your ‘queries’ once and make them work on <a class="reference internal" href="../general/requirements.html"><em>all +supported database systems</em></a>. Add the +following code to your model.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">public</span> <span class="k">function</span> <span class="nf">get_news</span><span class="p">(</span><span class="nv">$slug</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">)</span> +<span class="p">{</span> + <span class="k">if</span> <span class="p">(</span><span class="nv">$slug</span> <span class="o">===</span> <span class="k">FALSE</span><span class="p">)</span> + <span class="p">{</span> + <span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'news'</span><span class="p">);</span> + <span class="k">return</span> <span class="nv">$query</span><span class="o">-></span><span class="na">result_array</span><span class="p">();</span> + <span class="p">}</span> + + <span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get_where</span><span class="p">(</span><span class="s1">'news'</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span><span class="s1">'slug'</span> <span class="o">=></span> <span class="nv">$slug</span><span class="p">));</span> + <span class="k">return</span> <span class="nv">$query</span><span class="o">-></span><span class="na">row_array</span><span class="p">();</span> +<span class="p">}</span> +</pre></div> +</div> +<p>With this code you can perform two different queries. You can get all +news records, or get a news item by its <a class="reference external" href="#">slug</a>. You might have +noticed that the <tt class="docutils literal"><span class="pre">$slug</span></tt> variable wasn’t sanitized before running the +query; <a class="reference internal" href="../database/query_builder.html"><em>Query Builder</em></a> does this for you.</p> +</div> +<div class="section" id="display-the-news"> +<h2>Display the news<a class="headerlink" href="#display-the-news" title="Permalink to this headline">¶</a></h2> +<p>Now that the queries are written, the model should be tied to the views +that are going to display the news items to the user. This could be done +in our <tt class="docutils literal"><span class="pre">Pages</span></tt> controller created earlier, but for the sake of clarity, +a new <tt class="docutils literal"><span class="pre">News</span></tt> controller is defined. Create the new controller at +<em>application/controllers/News.php</em>.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> +<span class="k">class</span> <span class="nc">News</span> <span class="k">extends</span> <span class="nx">CI_Controller</span> <span class="p">{</span> + + <span class="k">public</span> <span class="k">function</span> <span class="nf">__construct</span><span class="p">()</span> + <span class="p">{</span> + <span class="k">parent</span><span class="o">::</span><span class="na">__construct</span><span class="p">();</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">model</span><span class="p">(</span><span class="s1">'news_model'</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">helper</span><span class="p">(</span><span class="s1">'url_helper'</span><span class="p">);</span> + <span class="p">}</span> + + <span class="k">public</span> <span class="k">function</span> <span class="nf">index</span><span class="p">()</span> + <span class="p">{</span> + <span class="nv">$data</span><span class="p">[</span><span class="s1">'news'</span><span class="p">]</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">news_model</span><span class="o">-></span><span class="na">get_news</span><span class="p">();</span> + <span class="p">}</span> + + <span class="k">public</span> <span class="k">function</span> <span class="nf">view</span><span class="p">(</span><span class="nv">$slug</span> <span class="o">=</span> <span class="k">NULL</span><span class="p">)</span> + <span class="p">{</span> + <span class="nv">$data</span><span class="p">[</span><span class="s1">'news_item'</span><span class="p">]</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">news_model</span><span class="o">-></span><span class="na">get_news</span><span class="p">(</span><span class="nv">$slug</span><span class="p">);</span> + <span class="p">}</span> +<span class="p">}</span> +</pre></div> +</div> +<p>Looking at the code, you may see some similarity with the files we +created earlier. First, the <tt class="docutils literal"><span class="pre">__construct()</span></tt> method: it calls the +constructor of its parent class (<tt class="docutils literal"><span class="pre">CI_Controller</span></tt>) and loads the model, +so it can be used in all other methods in this controller. +It also loads a collection of <a class="reference internal" href="../helpers/url_helper.html"><em>URL Helper</em></a> +functions, because we’ll use one of them in a view later.</p> +<p>Next, there are two methods to view all news items and one for a specific +news item. You can see that the <tt class="docutils literal"><span class="pre">$slug</span></tt> variable is passed to the model’s +method in the second method. The model is using this slug to identify the +news item to be returned.</p> +<p>Now the data is retrieved by the controller through our model, but +nothing is displayed yet. The next thing to do is passing this data to +the views.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">public</span> <span class="k">function</span> <span class="nf">index</span><span class="p">()</span> +<span class="p">{</span> + <span class="nv">$data</span><span class="p">[</span><span class="s1">'news'</span><span class="p">]</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">news_model</span><span class="o">-></span><span class="na">get_news</span><span class="p">();</span> + <span class="nv">$data</span><span class="p">[</span><span class="s1">'title'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'News archive'</span><span class="p">;</span> + + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'templates/header'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'news/index'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'templates/footer'</span><span class="p">);</span> +<span class="p">}</span> +</pre></div> +</div> +<p>The code above gets all news records from the model and assigns it to a +variable. The value for the title is also assigned to the <tt class="docutils literal"><span class="pre">$data['title']</span></tt> +element and all data is passed to the views. You now need to create a +view to render the news items. Create <em>application/views/news/index.php</em> +and add the next piece of code.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">h2</span><span class="o">><?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$title</span><span class="p">;</span> <span class="cp">?></span><span class="p"></</span><span class="nt">h2</span><span class="p">></span> + +<span class="cp"><?php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$news</span> <span class="k">as</span> <span class="nv">$news_item</span><span class="p">)</span><span class="o">:</span> <span class="cp">?></span> + + <span class="p"><</span><span class="nt">h3</span><span class="p">></span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$news_item</span><span class="p">[</span><span class="s1">'title'</span><span class="p">];</span> <span class="cp">?></span><span class="p"></</span><span class="nt">h3</span><span class="p">></span> + <span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"main"</span><span class="p">></span> + <span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$news_item</span><span class="p">[</span><span class="s1">'text'</span><span class="p">];</span> <span class="cp">?></span> + <span class="p"></</span><span class="nt">div</span><span class="p">></span> + <span class="p"><</span><span class="nt">p</span><span class="p">><</span><span class="nt">a</span> <span class="na">href</span><span class="o">=</span><span class="s">"</span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">site_url</span><span class="p">(</span><span class="s1">'news/'</span><span class="o">.</span><span class="nv">$news_item</span><span class="p">[</span><span class="s1">'slug'</span><span class="p">]);</span> <span class="cp">?></span><span class="s">"</span><span class="p">></span>View article<span class="p"></</span><span class="nt">a</span><span class="p">></</span><span class="nt">p</span><span class="p">></span> + +<span class="cp"><?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?></span> +</pre></div> +</div> +<p>Here, each news item is looped and displayed to the user. You can see we +wrote our template in PHP mixed with HTML. If you prefer to use a template +language, you can use CodeIgniter’s <a class="reference internal" href="../libraries/parser.html"><em>Template +Parser</em></a> class or a third party parser.</p> +<p>The news overview page is now done, but a page to display individual +news items is still absent. The model created earlier is made in such +way that it can easily be used for this functionality. You only need to +add some code to the controller and create a new view. Go back to the +<tt class="docutils literal"><span class="pre">News</span></tt> controller and update <tt class="docutils literal"><span class="pre">view()</span></tt> with the following:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">public</span> <span class="k">function</span> <span class="nf">view</span><span class="p">(</span><span class="nv">$slug</span> <span class="o">=</span> <span class="k">NULL</span><span class="p">)</span> +<span class="p">{</span> + <span class="nv">$data</span><span class="p">[</span><span class="s1">'news_item'</span><span class="p">]</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">news_model</span><span class="o">-></span><span class="na">get_news</span><span class="p">(</span><span class="nv">$slug</span><span class="p">);</span> + + <span class="k">if</span> <span class="p">(</span><span class="k">empty</span><span class="p">(</span><span class="nv">$data</span><span class="p">[</span><span class="s1">'news_item'</span><span class="p">]))</span> + <span class="p">{</span> + <span class="nx">show_404</span><span class="p">();</span> + <span class="p">}</span> + + <span class="nv">$data</span><span class="p">[</span><span class="s1">'title'</span><span class="p">]</span> <span class="o">=</span> <span class="nv">$data</span><span class="p">[</span><span class="s1">'news_item'</span><span class="p">][</span><span class="s1">'title'</span><span class="p">];</span> + + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'templates/header'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'news/view'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'templates/footer'</span><span class="p">);</span> +<span class="p">}</span> +</pre></div> +</div> +<p>Instead of calling the <tt class="docutils literal"><span class="pre">get_news()</span></tt> method without a parameter, the +<tt class="docutils literal"><span class="pre">$slug</span></tt> variable is passed, so it will return the specific news item. +The only things left to do is create the corresponding view at +<em>application/views/news/view.php</em>. Put the following code in this file.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> +<span class="k">echo</span> <span class="s1">'<h2>'</span><span class="o">.</span><span class="nv">$news_item</span><span class="p">[</span><span class="s1">'title'</span><span class="p">]</span><span class="o">.</span><span class="s1">'</h2>'</span><span class="p">;</span> +<span class="k">echo</span> <span class="nv">$news_item</span><span class="p">[</span><span class="s1">'text'</span><span class="p">];</span> +</pre></div> +</div> +</div> +<div class="section" id="routing"> +<h2>Routing<a class="headerlink" href="#routing" title="Permalink to this headline">¶</a></h2> +<p>Because of the wildcard routing rule created earlier, you need an extra +route to view the controller that you just made. Modify your routing file +(<em>application/config/routes.php</em>) so it looks as follows. +This makes sure the requests reaches the <tt class="docutils literal"><span class="pre">News</span></tt> controller instead of +going directly to the <tt class="docutils literal"><span class="pre">Pages</span></tt> controller. The first line routes URI’s +with a slug to the <tt class="docutils literal"><span class="pre">view()</span></tt> method in the <tt class="docutils literal"><span class="pre">News</span></tt> controller.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$route</span><span class="p">[</span><span class="s1">'news/(:any)'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'news/view/$1'</span><span class="p">;</span> +<span class="nv">$route</span><span class="p">[</span><span class="s1">'news'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'news'</span><span class="p">;</span> +<span class="nv">$route</span><span class="p">[</span><span class="s1">'(:any)'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'pages/view/$1'</span><span class="p">;</span> +<span class="nv">$route</span><span class="p">[</span><span class="s1">'default_controller'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'pages/view'</span><span class="p">;</span> +</pre></div> +</div> +<p>Point your browser to your document root, followed by index.php/news and +watch your news page.</p> +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="create_news_items.html" class="btn btn-neutral float-right" title="Create news items">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="static_pages.html" class="btn btn-neutral" title="Static pages"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2017, British Columbia Institute of Technology. + Last updated on Jun 19, 2017. + </p> + </div> + + Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. + +</footer> + </div> + </div> + + </section> + + </div> + + + + + + <script type="text/javascript"> + var DOCUMENTATION_OPTIONS = { + URL_ROOT:'../', + VERSION:'3.1.5', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; + </script> + <script type="text/javascript" src="../_static/jquery.js"></script> + <script type="text/javascript" src="../_static/underscore.js"></script> + <script type="text/javascript" src="../_static/doctools.js"></script> + + + + + + <script type="text/javascript" src="../_static/js/theme.js"></script> + + + + + <script type="text/javascript"> + jQuery(function () { + SphinxRtdTheme.StickyNav.enable(); + }); + </script> + + +</body> +</html>
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Manipulation Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li> +<li class="toctree-l2"><a class="reference internal" 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class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li> +</ul> +</li> +</ul> + + + + </div> + + </nav> + + <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> + + + <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> + <i data-toggle="wy-nav-top" class="fa fa-bars"></i> + <a href="../index.html">CodeIgniter</a> + </nav> + + + + <div class="wy-nav-content"> + <div class="rst-content"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs"> + <li><a href="../index.html">Docs</a> »</li> + + <li><a href="index.html">Tutorial</a> »</li> + + <li>Static pages</li> + <li class="wy-breadcrumbs-aside"> + + </li> + <div style="float:right;margin-left:5px;" id="closeMe"> + <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> + </div> + </ul> + <hr/> +</div> + <div role="main" class="document"> + + <div class="section" id="static-pages"> +<h1>Static pages<a class="headerlink" href="#static-pages" title="Permalink to this headline">¶</a></h1> +<p><strong>Note:</strong> This tutorial assumes you’ve downloaded CodeIgniter and +<a class="reference internal" href="../installation/index.html"><em>installed the framework</em></a> in your +development environment.</p> +<p>The first thing you’re going to do is set up a <strong>controller</strong> to handle +static pages. A controller is simply a class that helps delegate work. +It is the glue of your web application.</p> +<p>For example, when a call is made to:</p> +<blockquote> +<div><a class="reference external" href="http://example.com/news/latest/10">http://example.com/news/latest/10</a></div></blockquote> +<p>We might imagine that there is a controller named “news”. The method +being called on news would be “latest”. The news method’s job could be to +grab 10 news items, and render them on the page. Very often in MVC, +you’ll see URL patterns that match:</p> +<blockquote> +<div><a class="reference external" href="http://example.com/[controller-class]/[controller-method]/[arguments">http://example.com/[controller-class]/[controller-method]/[arguments</a>]</div></blockquote> +<p>As URL schemes become more complex, this may change. But for now, this +is all we will need to know.</p> +<p>Create a file at <em>application/controllers/Pages.php</em> with the following +code.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> +<span class="k">class</span> <span class="nc">Pages</span> <span class="k">extends</span> <span class="nx">CI_Controller</span> <span class="p">{</span> + + <span class="k">public</span> <span class="k">function</span> <span class="nf">view</span><span class="p">(</span><span class="nv">$page</span> <span class="o">=</span> <span class="s1">'home'</span><span class="p">)</span> + <span class="p">{</span> + <span class="p">}</span> +<span class="p">}</span> +</pre></div> +</div> +<p>You have created a class named <tt class="docutils literal"><span class="pre">Pages</span></tt>, with a view method that accepts +one argument named <tt class="docutils literal"><span class="pre">$page</span></tt>. The <tt class="docutils literal"><span class="pre">Pages</span></tt> class is extending the +<tt class="docutils literal"><span class="pre">CI_Controller</span></tt> class. This means that the new pages class can access the +methods and variables defined in the <tt class="docutils literal"><span class="pre">CI_Controller</span></tt> class +(<em>system/core/Controller.php</em>).</p> +<p>The <strong>controller is what will become the center of every request</strong> to +your web application. In very technical CodeIgniter discussions, it may +be referred to as the <em>super object</em>. Like any php class, you refer to +it within your controllers as <tt class="docutils literal"><span class="pre">$this</span></tt>. Referring to <tt class="docutils literal"><span class="pre">$this</span></tt> is how +you will load libraries, views, and generally command the framework.</p> +<p>Now you’ve created your first method, it’s time to make some basic page +templates. We will be creating two “views” (page templates) that act as +our page footer and header.</p> +<p>Create the header at <em>application/views/templates/header.php</em> and add +the following code:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">html</span><span class="o">></span> + <span class="o"><</span><span class="nx">head</span><span class="o">></span> + <span class="o"><</span><span class="nx">title</span><span class="o">></span><span class="nx">CodeIgniter</span> <span class="nx">Tutorial</span><span class="o"></</span><span class="nx">title</span><span class="o">></span> + <span class="o"></</span><span class="nx">head</span><span class="o">></span> + <span class="o"><</span><span class="nx">body</span><span class="o">></span> + + <span class="o"><</span><span class="nx">h1</span><span class="o">><?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$title</span><span class="p">;</span> <span class="cp">?></span><span class="p"></</span><span class="nt">h1</span><span class="p">></span> +</pre></div> +</div> +<p>The header contains the basic HTML code that you’ll want to display +before loading the main view, together with a heading. It will also +output the <tt class="docutils literal"><span class="pre">$title</span></tt> variable, which we’ll define later in the controller. +Now, create a footer at <em>application/views/templates/footer.php</em> that +includes the following code:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span> <span class="o"><</span><span class="nx">em</span><span class="o">>&</span><span class="nb">copy</span><span class="p">;</span> <span class="mi">2015</span><span class="o"></</span><span class="nx">em</span><span class="o">></span> + <span class="o"></</span><span class="nx">body</span><span class="o">></span> +<span class="o"></</span><span class="nx">html</span><span class="o">></span> +</pre></div> +</div> +<div class="section" id="adding-logic-to-the-controller"> +<h2>Adding logic to the controller<a class="headerlink" href="#adding-logic-to-the-controller" title="Permalink to this headline">¶</a></h2> +<p>Earlier you set up a controller with a <tt class="docutils literal"><span class="pre">view()</span></tt> method. The method +accepts one parameter, which is the name of the page to be loaded. The +static page templates will be located in the <em>application/views/pages/</em> +directory.</p> +<p>In that directory, create two files named <em>home.php</em> and <em>about.php</em>. +Within those files, type some text − anything you’d like − and save them. +If you like to be particularly un-original, try “Hello World!”.</p> +<p>In order to load those pages, you’ll have to check whether the requested +page actually exists:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">public</span> <span class="k">function</span> <span class="nf">view</span><span class="p">(</span><span class="nv">$page</span> <span class="o">=</span> <span class="s1">'home'</span><span class="p">)</span> +<span class="p">{</span> + <span class="k">if</span> <span class="p">(</span> <span class="o">!</span> <span class="nb">file_exists</span><span class="p">(</span><span class="nx">APPPATH</span><span class="o">.</span><span class="s1">'views/pages/'</span><span class="o">.</span><span class="nv">$page</span><span class="o">.</span><span class="s1">'.php'</span><span class="p">))</span> + <span class="p">{</span> + <span class="c1">// Whoops, we don't have a page for that!</span> + <span class="nx">show_404</span><span class="p">();</span> + <span class="p">}</span> + + <span class="nv">$data</span><span class="p">[</span><span class="s1">'title'</span><span class="p">]</span> <span class="o">=</span> <span class="nb">ucfirst</span><span class="p">(</span><span class="nv">$page</span><span class="p">);</span> <span class="c1">// Capitalize the first letter</span> + + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'templates/header'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'pages/'</span><span class="o">.</span><span class="nv">$page</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'templates/footer'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> +<span class="p">}</span> +</pre></div> +</div> +<p>Now, when the page does exist, it is loaded, including the header and +footer, and displayed to the user. If the page doesn’t exist, a “404 +Page not found” error is shown.</p> +<p>The first line in this method checks whether the page actually exists. +PHP’s native <tt class="docutils literal"><span class="pre">file_exists()</span></tt> function is used to check whether the file +is where it’s expected to be. <tt class="docutils literal"><span class="pre">show_404()</span></tt> is a built-in CodeIgniter +function that renders the default error page.</p> +<p>In the header template, the <tt class="docutils literal"><span class="pre">$title</span></tt> variable was used to customize the +page title. The value of title is defined in this method, but instead of +assigning the value to a variable, it is assigned to the title element +in the <tt class="docutils literal"><span class="pre">$data</span></tt> array.</p> +<p>The last thing that has to be done is loading the views in the order +they should be displayed. The second parameter in the <tt class="docutils literal"><span class="pre">view()</span></tt> method is +used to pass values to the view. Each value in the <tt class="docutils literal"><span class="pre">$data</span></tt> array is +assigned to a variable with the name of its key. So the value of +<tt class="docutils literal"><span class="pre">$data['title']</span></tt> in the controller is equivalent to <tt class="docutils literal"><span class="pre">$title</span></tt> in the +view.</p> +</div> +<div class="section" id="routing"> +<h2>Routing<a class="headerlink" href="#routing" title="Permalink to this headline">¶</a></h2> +<p>The controller is now functioning! Point your browser to +<tt class="docutils literal"><span class="pre">[your-site-url]index.php/pages/view</span></tt> to see your page. When you visit +<tt class="docutils literal"><span class="pre">index.php/pages/view/about</span></tt> you’ll see the about page, again including +the header and footer.</p> +<p>Using custom routing rules, you have the power to map any URI to any +controller and method, and break free from the normal convention: +<tt class="docutils literal"><span class="pre">http://example.com/[controller-class]/[controller-method]/[arguments]</span></tt></p> +<p>Let’s do that. Open the routing file located at +<em>application/config/routes.php</em> and add the following two lines. +Remove all other code that sets any element in the <tt class="docutils literal"><span class="pre">$route</span></tt> array.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$route</span><span class="p">[</span><span class="s1">'default_controller'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'pages/view'</span><span class="p">;</span> +<span class="nv">$route</span><span class="p">[</span><span class="s1">'(:any)'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'pages/view/$1'</span><span class="p">;</span> +</pre></div> +</div> +<p>CodeIgniter reads its routing rules from top to bottom and routes the +request to the first matching rule. Each rule is a regular expression +(left-side) mapped to a controller and method name separated by slashes +(right-side). When a request comes in, CodeIgniter looks for the first +match, and calls the appropriate controller and method, possibly with +arguments.</p> +<p>More information about routing can be found in the URI Routing +<a class="reference internal" href="../general/routing.html"><em>documentation</em></a>.</p> +<p>Here, the second rule in the <tt class="docutils literal"><span class="pre">$routes</span></tt> array matches <strong>any</strong> request +using the wildcard string <tt class="docutils literal"><span class="pre">(:any)</span></tt>. and passes the parameter to the +<tt class="docutils literal"><span class="pre">view()</span></tt> method of the <tt class="docutils literal"><span class="pre">Pages</span></tt> class.</p> +<p>Now visit <tt class="docutils literal"><span class="pre">index.php/about</span></tt>. Did it get routed correctly to the <tt class="docutils literal"><span class="pre">view()</span></tt> +method in the pages controller? Awesome!</p> +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="news_section.html" class="btn btn-neutral float-right" title="News section">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="index.html" class="btn btn-neutral" title="Tutorial"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2017, British Columbia Institute of Technology. + Last updated on Jun 19, 2017. + </p> + </div> + + Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. + +</footer> + </div> + </div> + + </section> + + </div> + + + + + + <script type="text/javascript"> + var DOCUMENTATION_OPTIONS = { + URL_ROOT:'../', + VERSION:'3.1.5', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; + </script> + <script type="text/javascript" src="../_static/jquery.js"></script> + <script type="text/javascript" src="../_static/underscore.js"></script> + <script type="text/javascript" src="../_static/doctools.js"></script> + + + + + + <script type="text/javascript" src="../_static/js/theme.js"></script> + + + + + <script type="text/javascript"> + jQuery(function () { + SphinxRtdTheme.StickyNav.enable(); + }); + </script> + + +</body> +</html>
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