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diff --git a/user_guide/tutorial/static_pages.html b/user_guide/tutorial/static_pages.html deleted file mode 100644 index 9bd87f860..000000000 --- a/user_guide/tutorial/static_pages.html +++ /dev/null @@ -1,633 +0,0 @@ - - -<!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>Static pages — CodeIgniter 3.1.10 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="index" title="Index" - href="../genindex.html"/> - <link rel="search" 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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"><span class="doc">installed the framework</span></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">$page</span> <span class="o">=</span> <span class="s1">'home'</span><span class="p">)</span> - <span class="p">{</span> - <span class="p">}</span> -<span class="p">}</span> -</pre></div> -</div> -<p>You have created a class named <code class="docutils literal"><span class="pre">Pages</span></code>, with a view method that accepts -one argument named <code class="docutils literal"><span class="pre">$page</span></code>. The <code class="docutils literal"><span class="pre">Pages</span></code> class is extending the -<code class="docutils literal"><span class="pre">CI_Controller</span></code> class. This means that the new pages class can access the -methods and variables defined in the <code class="docutils literal"><span class="pre">CI_Controller</span></code> 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 <code class="docutils literal"><span class="pre">$this</span></code>. Referring to <code class="docutils literal"><span class="pre">$this</span></code> 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">$title</span><span class="p">;</span> <span class="cp">?></span><span class="p"></</span><span class="nt">h1</span><span class="p">></span> -</pre></div> -</div> -<p>The header contains the basic HTML code that you’ll want to display -before loading the main view, together with a heading. It will also -output the <code class="docutils literal"><span class="pre">$title</span></code> 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 <code class="docutils literal"><span class="pre">view()</span></code> 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">$data</span><span class="p">);</span> -<span class="p">}</span> -</pre></div> -</div> -<p>Now, when the page does exist, it is loaded, including the header and -footer, and displayed to the user. If the page doesn’t exist, a “404 -Page not found” error is shown.</p> -<p>The first line in this method checks whether the page actually exists. -PHP’s native <code class="docutils literal"><span class="pre">file_exists()</span></code> function is used to check whether the file -is where it’s expected to be. <code class="docutils literal"><span class="pre">show_404()</span></code> is a built-in CodeIgniter -function that renders the default error page.</p> -<p>In the header template, the <code class="docutils literal"><span class="pre">$title</span></code> 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 <code class="docutils literal"><span class="pre">$data</span></code> array.</p> -<p>The last thing that has to be done is loading the views in the order -they should be displayed. The second parameter in the <code class="docutils literal"><span class="pre">view()</span></code> method is -used to pass values to the view. Each value in the <code class="docutils literal"><span class="pre">$data</span></code> array is -assigned to a variable with the name of its key. So the value of -<code class="docutils literal"><span class="pre">$data['title']</span></code> in the controller is equivalent to <code class="docutils literal"><span class="pre">$title</span></code> 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 -<code class="docutils literal"><span class="pre">[your-site-url]index.php/pages/view</span></code> to see your page. When you visit -<code class="docutils literal"><span class="pre">index.php/pages/view/about</span></code> 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: -<code class="docutils literal"><span class="pre">http://example.com/[controller-class]/[controller-method]/[arguments]</span></code></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 <code class="docutils literal"><span class="pre">$route</span></code> array.</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$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/$1'</span><span class="p">;</span> -</pre></div> -</div> -<p>CodeIgniter reads its routing rules from top to bottom and routes the -request to the first matching rule. Each rule is a regular expression -(left-side) mapped to a controller and method name separated by slashes -(right-side). When a request comes in, CodeIgniter looks for the first -match, and calls the appropriate controller and method, possibly with -arguments.</p> -<p>More information about routing can be found in the URI Routing -<a class="reference internal" href="../general/routing.html"><span class="doc">documentation</span></a>.</p> -<p>Here, the second rule in the <code class="docutils literal"><span class="pre">$routes</span></code> array matches <strong>any</strong> request -using the wildcard string <code class="docutils literal"><span class="pre">(:any)</span></code>. and passes the parameter to the -<code class="docutils literal"><span class="pre">view()</span></code> method of the <code class="docutils literal"><span class="pre">Pages</span></code> class.</p> -<p>Now visit <code class="docutils literal"><span class="pre">index.php/about</span></code>. Did it get routed correctly to the <code class="docutils literal"><span class="pre">view()</span></code> -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 - 2019, British Columbia Institute of Technology. - Last updated on Jan 16, 2019. - </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:'3.1.10', - 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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