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diff --git a/user_guide/libraries/loader.html b/user_guide/libraries/loader.html deleted file mode 100644 index 7572513be..000000000 --- a/user_guide/libraries/loader.html +++ /dev/null @@ -1,1213 +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>Loader Class — CodeIgniter 3.1.8 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" title="Search" href="../search.html"/> - <link rel="top" title="CodeIgniter 3.1.8 documentation" href="../index.html"/> - <link rel="up" title="Libraries" href="index.html"/> - <link rel="next" title="Migrations Class" href="migration.html"/> - <link rel="prev" title="Language Class" href="language.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></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" 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-<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">Libraries</a> »</li> - - <li>Loader Class</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="loader-class"> -<h1>Loader Class<a class="headerlink" href="#loader-class" title="Permalink to this headline">¶</a></h1> -<p>Loader, as the name suggests, is used to load elements. These elements -can be libraries (classes) <a class="reference internal" href="../general/views.html"><span class="doc">View files</span></a>, -<a class="reference internal" href="../general/drivers.html"><span class="doc">Drivers</span></a>, -<a class="reference internal" href="../general/helpers.html"><span class="doc">Helpers</span></a>, -<a class="reference internal" href="../general/models.html"><span class="doc">Models</span></a>, or your own files.</p> -<div class="admonition note"> -<p class="first admonition-title">Note</p> -<p class="last">This class is initialized automatically by the system so there -is no need to do it manually.</p> -</div> -<div class="contents local topic" id="contents"> -<ul class="simple"> -<li><a class="reference internal" href="#application-packages" id="id2">Application “Packages”</a><ul> -<li><a class="reference internal" href="#package-view-files" id="id3">Package view files</a></li> -</ul> -</li> -<li><a class="reference internal" href="#class-reference" id="id4">Class Reference</a></li> -</ul> -</div> -<div class="custom-index container"></div><div class="section" id="application-packages"> -<h2><a class="toc-backref" href="#id2">Application “Packages”</a><a class="headerlink" href="#application-packages" title="Permalink to this headline">¶</a></h2> -<p>An application package allows for the easy distribution of complete sets -of resources in a single directory, complete with its own libraries, -models, helpers, config, and language files. It is recommended that -these packages be placed in the application/third_party directory. Below -is a sample map of an package directory.</p> -<p>The following is an example of a directory for an application package -named “Foo Bar”.</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">/</span><span class="nx">application</span><span class="o">/</span><span class="nx">third_party</span><span class="o">/</span><span class="nx">foo_bar</span> - -<span class="nx">config</span><span class="o">/</span> -<span class="nx">helpers</span><span class="o">/</span> -<span class="nx">language</span><span class="o">/</span> -<span class="nx">libraries</span><span class="o">/</span> -<span class="nx">models</span><span class="o">/</span> -</pre></div> -</div> -<p>Whatever the purpose of the “Foo Bar” application package, it has its -own config files, helpers, language files, libraries, and models. To use -these resources in your controllers, you first need to tell the Loader -that you are going to be loading resources from a package, by adding the -package path via the <code class="docutils literal"><span class="pre">add_package_path()</span></code> method.</p> -<div class="section" id="package-view-files"> -<h3><a class="toc-backref" href="#id3">Package view files</a><a class="headerlink" href="#package-view-files" title="Permalink to this headline">¶</a></h3> -<p>By Default, package view files paths are set when <code class="docutils literal"><span class="pre">add_package_path()</span></code> -is called. View paths are looped through, and once a match is -encountered that view is loaded.</p> -<p>In this instance, it is possible for view naming collisions within -packages to occur, and possibly the incorrect package being loaded. To -ensure against this, set an optional second parameter of FALSE when -calling <code class="docutils literal"><span class="pre">add_package_path()</span></code>.</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">add_package_path</span><span class="p">(</span><span class="nx">APPPATH</span><span class="o">.</span><span class="s1">'my_app'</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span> -<span class="nv">$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">'my_app_index'</span><span class="p">);</span> <span class="c1">// Loads</span> -<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'welcome_message'</span><span class="p">);</span> <span class="c1">// Will not load the default welcome_message b/c the second param to add_package_path is FALSE</span> - -<span class="c1">// Reset things</span> -<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">remove_package_path</span><span class="p">(</span><span class="nx">APPPATH</span><span class="o">.</span><span class="s1">'my_app'</span><span class="p">);</span> - -<span class="c1">// Again without the second parameter:</span> -<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">add_package_path</span><span class="p">(</span><span class="nx">APPPATH</span><span class="o">.</span><span class="s1">'my_app'</span><span class="p">);</span> -<span class="nv">$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">'my_app_index'</span><span class="p">);</span> <span class="c1">// Loads</span> -<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'welcome_message'</span><span class="p">);</span> <span class="c1">// Loads</span> -</pre></div> -</div> -</div> -</div> -<div class="section" id="class-reference"> -<h2><a class="toc-backref" href="#id4">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2> -<dl class="class"> -<dt id="CI_Loader"> -<em class="property">class </em><code class="descname">CI_Loader</code><a class="headerlink" href="#CI_Loader" title="Permalink to this definition">¶</a></dt> -<dd><dl class="method"> -<dt id="CI_Loader::library"> -<code class="descname">library</code><span class="sig-paren">(</span><em>$library</em><span class="optional">[</span>, <em>$params = NULL</em><span class="optional">[</span>, <em>$object_name = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::library" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$library</strong> (<em>mixed</em>) – Library name as a string or an array with multiple libraries</li> -<li><strong>$params</strong> (<em>array</em>) – Optional array of parameters to pass to the loaded library’s constructor</li> -<li><strong>$object_name</strong> (<em>string</em>) – Optional object name to assign the library to</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Loader</p> -</td> -</tr> -</tbody> -</table> -<p>This method is used to load core classes.</p> -<div class="admonition note"> -<p class="first admonition-title">Note</p> -<p class="last">We use the terms “class” and “library” interchangeably.</p> -</div> -<p>For example, if you would like to send email with CodeIgniter, the first -step is to load the email class within your controller:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$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">'email'</span><span class="p">);</span> -</pre></div> -</div> -<p>Once loaded, the library will be ready for use, using <code class="docutils literal"><span class="pre">$this->email</span></code>.</p> -<p>Library files can be stored in subdirectories within the main -“libraries” directory, or within your personal <em>application/libraries</em> -directory. To load a file located in a subdirectory, simply include the -path, relative to the “libraries” directory. For example, if you have -file located at:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">libraries</span><span class="o">/</span><span class="nx">flavors</span><span class="o">/</span><span class="nx">Chocolate</span><span class="o">.</span><span class="nx">php</span> -</pre></div> -</div> -<p>You will load it using:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$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">'flavors/chocolate'</span><span class="p">);</span> -</pre></div> -</div> -<p>You may nest the file in as many subdirectories as you want.</p> -<p>Additionally, multiple libraries can be loaded at the same time by -passing an array of libraries to the load method.</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'email'</span><span class="p">,</span> <span class="s1">'table'</span><span class="p">));</span> -</pre></div> -</div> -<p><strong>Setting options</strong></p> -<p>The second (optional) parameter allows you to optionally pass -configuration setting. You will typically pass these as an array:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$config</span> <span class="o">=</span> <span class="k">array</span> <span class="p">(</span> - <span class="s1">'mailtype'</span> <span class="o">=></span> <span class="s1">'html'</span><span class="p">,</span> - <span class="s1">'charset'</span> <span class="o">=></span> <span class="s1">'utf-8'</span><span class="p">,</span> - <span class="s1">'priority'</span> <span class="o">=></span> <span class="s1">'1'</span> -<span class="p">);</span> - -<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'email'</span><span class="p">,</span> <span class="nv">$config</span><span class="p">);</span> -</pre></div> -</div> -<p>Config options can usually also be set via a config file. Each library -is explained in detail in its own page, so please read the information -regarding each one you would like to use.</p> -<p>Please take note, when multiple libraries are supplied in an array for -the first parameter, each will receive the same parameter information.</p> -<p><strong>Assigning a Library to a different object name</strong></p> -<p>If the third (optional) parameter is blank, the library will usually be -assigned to an object with the same name as the library. For example, if -the library is named Calendar, it will be assigned to a variable named -<code class="docutils literal"><span class="pre">$this->calendar</span></code>.</p> -<p>If you prefer to set your own class names you can pass its value to the -third parameter:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$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">'calendar'</span><span class="p">,</span> <span class="k">NULL</span><span class="p">,</span> <span class="s1">'my_calendar'</span><span class="p">);</span> - -<span class="c1">// Calendar class is now accessed using:</span> -<span class="nv">$this</span><span class="o">-></span><span class="na">my_calendar</span> -</pre></div> -</div> -<p>Please take note, when multiple libraries are supplied in an array for -the first parameter, this parameter is discarded.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::driver"> -<code class="descname">driver</code><span class="sig-paren">(</span><em>$library</em><span class="optional">[</span>, <em>$params = NULL</em><span class="optional">[</span>, <em>$object_name</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::driver" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$library</strong> (<em>mixed</em>) – Library name as a string or an array with multiple libraries</li> -<li><strong>$params</strong> (<em>array</em>) – Optional array of parameters to pass to the loaded library’s constructor</li> -<li><strong>$object_name</strong> (<em>string</em>) – Optional object name to assign the library to</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Loader</p> -</td> -</tr> -</tbody> -</table> -<p>This method is used to load driver libraries, acts very much like the -<code class="docutils literal"><span class="pre">library()</span></code> method.</p> -<p>As an example, if you would like to use sessions with CodeIgniter, the first -step is to load the session driver within your controller:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">driver</span><span class="p">(</span><span class="s1">'session'</span><span class="p">);</span> -</pre></div> -</div> -<p>Once loaded, the library will be ready for use, using <code class="docutils literal"><span class="pre">$this->session</span></code>.</p> -<p>Driver files must be stored in a subdirectory within the main -“libraries” directory, or within your personal <em>application/libraries</em> -directory. The subdirectory must match the parent class name. Read the -<a class="reference internal" href="../general/drivers.html"><span class="doc">Drivers</span></a> description for details.</p> -<p>Additionally, multiple driver libraries can be loaded at the same time by -passing an array of drivers to the load method.</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">driver</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'session'</span><span class="p">,</span> <span class="s1">'cache'</span><span class="p">));</span> -</pre></div> -</div> -<p><strong>Setting options</strong></p> -<p>The second (optional) parameter allows you to optionally pass -configuration settings. You will typically pass these as an array:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$config</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> - <span class="s1">'sess_driver'</span> <span class="o">=></span> <span class="s1">'cookie'</span><span class="p">,</span> - <span class="s1">'sess_encrypt_cookie'</span> <span class="o">=></span> <span class="k">true</span><span class="p">,</span> - <span class="s1">'encryption_key'</span> <span class="o">=></span> <span class="s1">'mysecretkey'</span> -<span class="p">);</span> - -<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">driver</span><span class="p">(</span><span class="s1">'session'</span><span class="p">,</span> <span class="nv">$config</span><span class="p">);</span> -</pre></div> -</div> -<p>Config options can usually also be set via a config file. Each library -is explained in detail in its own page, so please read the information -regarding each one you would like to use.</p> -<p><strong>Assigning a Driver to a different object name</strong></p> -<p>If the third (optional) parameter is blank, the library will be assigned -to an object with the same name as the parent class. For example, if -the library is named Session, it will be assigned to a variable named -<code class="docutils literal"><span class="pre">$this->session</span></code>.</p> -<p>If you prefer to set your own class names you can pass its value to the -third parameter:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'session'</span><span class="p">,</span> <span class="s1">''</span><span class="p">,</span> <span class="s1">'my_session'</span><span class="p">);</span> - -<span class="c1">// Session class is now accessed using:</span> -<span class="nv">$this</span><span class="o">-></span><span class="na">my_session</span> -</pre></div> -</div> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::view"> -<code class="descname">view</code><span class="sig-paren">(</span><em>$view</em><span class="optional">[</span>, <em>$vars = array()</em><span class="optional">[</span>, <em>return = FALSE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::view" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$view</strong> (<em>string</em>) – View name</li> -<li><strong>$vars</strong> (<em>array</em>) – An associative array of variables</li> -<li><strong>$return</strong> (<em>bool</em>) – Whether to return the loaded view</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">View content string if $return is set to TRUE, otherwise CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> -</td> -</tr> -</tbody> -</table> -<p>This method is used to load your View files. If you haven’t read the -<a class="reference internal" href="../general/views.html"><span class="doc">Views</span></a> section of the user guide it is -recommended that you do since it shows you how this method is -typically used.</p> -<p>The first parameter is required. It is the name of the view file you -would like to load.</p> -<div class="admonition note"> -<p class="first admonition-title">Note</p> -<p class="last">The .php file extension does not need to be specified unless -you use something other than .php.</p> -</div> -<p>The second <strong>optional</strong> parameter can take an associative array or an -object as input, which it runs through the PHP -<a class="reference external" href="http://php.net/extract">extract()</a> function to convert to variables -that can be used in your view files. Again, read the -<a class="reference internal" href="../general/views.html"><span class="doc">Views</span></a> page to learn how this might be useful.</p> -<p>The third <strong>optional</strong> parameter lets you change the behavior of the -method so that it returns data as a string rather than sending it to -your browser. This can be useful if you want to process the data in some -way. If you set the parameter to TRUE (boolean) it will return data. The -default behavior is FALSE, which sends it to your browser. Remember to -assign it to a variable if you want the data returned:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$string</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'myfile'</span><span class="p">,</span> <span class="s1">''</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> -</pre></div> -</div> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::vars"> -<code class="descname">vars</code><span class="sig-paren">(</span><em>$vars</em><span class="optional">[</span>, <em>$val = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::vars" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$vars</strong> (<em>mixed</em>) – An array of variables or a single variable name</li> -<li><strong>$val</strong> (<em>mixed</em>) – Optional variable value</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Loader</p> -</td> -</tr> -</tbody> -</table> -<p>This method takes an associative array as input and generates -variables using the PHP <a class="reference external" href="http://php.net/extract">extract()</a> -function. This method produces the same result as using the second -parameter of the <code class="docutils literal"><span class="pre">$this->load->view()</span></code> method above. The reason you -might want to use this method independently is if you would like to -set some global variables in the constructor of your controller and have -them become available in any view file loaded from any method. You can -have multiple calls to this method. The data get cached and merged -into one array for conversion to variables.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::get_var"> -<code class="descname">get_var</code><span class="sig-paren">(</span><em>$key</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::get_var" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$key</strong> (<em>string</em>) – Variable name key</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Value if key is found, NULL if not</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> -</td> -</tr> -</tbody> -</table> -<p>This method checks the associative array of variables available to -your views. This is useful if for any reason a var is set in a library -or another controller method using <code class="docutils literal"><span class="pre">$this->load->vars()</span></code>.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::get_vars"> -<code class="descname">get_vars</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::get_vars" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">An array of all assigned view variables</td> -</tr> -<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">array</td> -</tr> -</tbody> -</table> -<p>This method retrieves all variables available to your views.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::clear_vars"> -<code class="descname">clear_vars</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::clear_vars" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">CI_Loader instance (method chaining)</td> -</tr> -<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">CI_Loader</td> -</tr> -</tbody> -</table> -<p>Clears cached view variables.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::model"> -<code class="descname">model</code><span class="sig-paren">(</span><em>$model</em><span class="optional">[</span>, <em>$name = ''</em><span class="optional">[</span>, <em>$db_conn = FALSE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::model" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$model</strong> (<em>mixed</em>) – Model name or an array containing multiple models</li> -<li><strong>$name</strong> (<em>string</em>) – Optional object name to assign the model to</li> -<li><strong>$db_conn</strong> (<em>string</em>) – Optional database configuration group to load</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Loader</p> -</td> -</tr> -</tbody> -</table> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$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">'model_name'</span><span class="p">);</span> -</pre></div> -</div> -<p>If your model is located in a subdirectory, include the relative path -from your models directory. For example, if you have a model located at -<em>application/models/blog/Queries.php</em> you’ll load it using:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">model</span><span class="p">(</span><span class="s1">'blog/queries'</span><span class="p">);</span> -</pre></div> -</div> -<p>If you would like your model assigned to a different object name you can -specify it via the second parameter of the loading method:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$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">'model_name'</span><span class="p">,</span> <span class="s1">'fubar'</span><span class="p">);</span> -<span class="nv">$this</span><span class="o">-></span><span class="na">fubar</span><span class="o">-></span><span class="na">method</span><span class="p">();</span> -</pre></div> -</div> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::database"> -<code class="descname">database</code><span class="sig-paren">(</span><span class="optional">[</span><em>$params = ''</em><span class="optional">[</span>, <em>$return = FALSE</em><span class="optional">[</span>, <em>$query_builder = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::database" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$params</strong> (<em>mixed</em>) – Database group name or configuration options</li> -<li><strong>$return</strong> (<em>bool</em>) – Whether to return the loaded database object</li> -<li><strong>$query_builder</strong> (<em>bool</em>) – Whether to load the Query Builder</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Loaded CI_DB instance or FALSE on failure if $return is set to TRUE, otherwise CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> -</td> -</tr> -</tbody> -</table> -<p>This method lets you load the database class. The two parameters are -<strong>optional</strong>. Please see the <a class="reference internal" href="../database/index.html"><span class="doc">database</span></a> -section for more info.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::dbforge"> -<code class="descname">dbforge</code><span class="sig-paren">(</span><span class="optional">[</span><em>$db = NULL</em><span class="optional">[</span>, <em>$return = FALSE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::dbforge" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$db</strong> (<em>object</em>) – Database object</li> -<li><strong>$return</strong> (<em>bool</em>) – Whether to return the Database Forge instance</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Loaded CI_DB_forge instance if $return is set to TRUE, otherwise CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> -</td> -</tr> -</tbody> -</table> -<p>Loads the <a class="reference internal" href="../database/forge.html"><span class="doc">Database Forge</span></a> class, please refer -to that manual for more info.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::dbutil"> -<code class="descname">dbutil</code><span class="sig-paren">(</span><span class="optional">[</span><em>$db = NULL</em><span class="optional">[</span>, <em>$return = FALSE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::dbutil" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$db</strong> (<em>object</em>) – Database object</li> -<li><strong>$return</strong> (<em>bool</em>) – Whether to return the Database Utilities instance</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Loaded CI_DB_utility instance if $return is set to TRUE, otherwise CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> -</td> -</tr> -</tbody> -</table> -<p>Loads the <a class="reference internal" href="../database/utilities.html"><span class="doc">Database Utilities</span></a> class, please -refer to that manual for more info.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::helper"> -<code class="descname">helper</code><span class="sig-paren">(</span><em>$helpers</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::helper" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$helpers</strong> (<em>mixed</em>) – Helper name as a string or an array containing multiple helpers</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Loader</p> -</td> -</tr> -</tbody> -</table> -<p>This method loads helper files, where file_name is the name of the -file, without the _helper.php extension.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::file"> -<code class="descname">file</code><span class="sig-paren">(</span><em>$path</em><span class="optional">[</span>, <em>$return = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::file" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$path</strong> (<em>string</em>) – File path</li> -<li><strong>$return</strong> (<em>bool</em>) – Whether to return the loaded file</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">File contents if $return is set to TRUE, otherwise CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> -</td> -</tr> -</tbody> -</table> -<p>This is a generic file loading method. Supply the filepath and name in -the first parameter and it will open and read the file. By default the -data is sent to your browser, just like a View file, but if you set the -second parameter to boolean TRUE it will instead return the data as a -string.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::language"> -<code class="descname">language</code><span class="sig-paren">(</span><em>$files</em><span class="optional">[</span>, <em>$lang = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::language" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$files</strong> (<em>mixed</em>) – Language file name or an array of multiple language files</li> -<li><strong>$lang</strong> (<em>string</em>) – Language name</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Loader</p> -</td> -</tr> -</tbody> -</table> -<p>This method is an alias of the <a class="reference internal" href="language.html"><span class="doc">language loading -method</span></a>: <code class="docutils literal"><span class="pre">$this->lang->load()</span></code>.</p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::config"> -<code class="descname">config</code><span class="sig-paren">(</span><em>$file</em><span class="optional">[</span>, <em>$use_sections = FALSE</em><span class="optional">[</span>, <em>$fail_gracefully = FALSE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::config" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$file</strong> (<em>string</em>) – Configuration file name</li> -<li><strong>$use_sections</strong> (<em>bool</em>) – Whether configuration values should be loaded into their own section</li> -<li><strong>$fail_gracefully</strong> (<em>bool</em>) – Whether to just return FALSE in case of failure</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p> -</td> -</tr> -</tbody> -</table> -<p>This method is an alias of the <a class="reference internal" href="config.html"><span class="doc">config file loading -method</span></a>: <code class="docutils literal"><span class="pre">$this->config->load()</span></code></p> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::is_loaded"> -<code class="descname">is_loaded</code><span class="sig-paren">(</span><em>$class</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::is_loaded" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$class</strong> (<em>string</em>) – Class name</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Singleton property name if found, FALSE if not</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> -</td> -</tr> -</tbody> -</table> -<p>Allows you to check if a class has already been loaded or not.</p> -<div class="admonition note"> -<p class="first admonition-title">Note</p> -<p class="last">The word “class” here refers to libraries and drivers.</p> -</div> -<p>If the requested class has been loaded, the method returns its assigned -name in the CI Super-object and FALSE if it’s not:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$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">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">is_loaded</span><span class="p">(</span><span class="s1">'Form_validation'</span><span class="p">);</span> <span class="c1">// returns 'form_validation'</span> - -<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">is_loaded</span><span class="p">(</span><span class="s1">'Nonexistent_library'</span><span class="p">);</span> <span class="c1">// returns FALSE</span> -</pre></div> -</div> -<div class="admonition important"> -<p class="first admonition-title">Important</p> -<p class="last">If you have more than one instance of a class (assigned to -different properties), then the first one will be returned.</p> -</div> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'form_validation'</span><span class="p">,</span> <span class="nv">$config</span><span class="p">,</span> <span class="s1">'fv'</span><span class="p">);</span> -<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'form_validation'</span><span class="p">);</span> - -<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">is_loaded</span><span class="p">(</span><span class="s1">'Form_validation'</span><span class="p">);</span> <span class="c1">// returns 'fv'</span> -</pre></div> -</div> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::add_package_path"> -<code class="descname">add_package_path</code><span class="sig-paren">(</span><em>$path</em><span class="optional">[</span>, <em>$view_cascade = TRUE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::add_package_path" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$path</strong> (<em>string</em>) – Path to add</li> -<li><strong>$view_cascade</strong> (<em>bool</em>) – Whether to use cascading views</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Loader</p> -</td> -</tr> -</tbody> -</table> -<p>Adding a package path instructs the Loader class to prepend a given path -for subsequent requests for resources. As an example, the “Foo Bar” -application package above has a library named Foo_bar.php. In our -controller, we’d do the following:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">add_package_path</span><span class="p">(</span><span class="nx">APPPATH</span><span class="o">.</span><span class="s1">'third_party/foo_bar/'</span><span class="p">)</span> - <span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'foo_bar'</span><span class="p">);</span> -</pre></div> -</div> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::remove_package_path"> -<code class="descname">remove_package_path</code><span class="sig-paren">(</span><span class="optional">[</span><em>$path = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::remove_package_path" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$path</strong> (<em>string</em>) – Path to remove</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Loader instance (method chaining)</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Loader</p> -</td> -</tr> -</tbody> -</table> -<p>When your controller is finished using resources from an application -package, and particularly if you have other application packages you -want to work with, you may wish to remove the package path so the Loader -no longer looks in that directory for resources. To remove the last path -added, simply call the method with no parameters.</p> -<p>Or to remove a specific package path, specify the same path previously -given to <code class="docutils literal"><span class="pre">add_package_path()</span></code> for a package.:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">remove_package_path</span><span class="p">(</span><span class="nx">APPPATH</span><span class="o">.</span><span class="s1">'third_party/foo_bar/'</span><span class="p">);</span> -</pre></div> -</div> -</dd></dl> - -<dl class="method"> -<dt id="CI_Loader::get_package_paths"> -<code class="descname">get_package_paths</code><span class="sig-paren">(</span><span class="optional">[</span><em>$include_base = TRUE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Loader::get_package_paths" title="Permalink to this definition">¶</a></dt> -<dd><table class="docutils field-list" frame="void" rules="none"> -<col class="field-name" /> -<col class="field-body" /> -<tbody valign="top"> -<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> -<li><strong>$include_base</strong> (<em>bool</em>) – Whether to include BASEPATH</li> -</ul> -</td> -</tr> -<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array of package paths</p> -</td> -</tr> -<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p> -</td> -</tr> -</tbody> -</table> -<p>Returns all currently available package paths.</p> -</dd></dl> - -</dd></dl> - -</div> -</div> - - - </div> - <footer> - - <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> - - <a href="migration.html" class="btn btn-neutral float-right" title="Migrations Class">Next <span class="fa fa-arrow-circle-right"></span></a> - - - <a href="language.html" class="btn btn-neutral" title="Language Class"><span class="fa fa-arrow-circle-left"></span> Previous</a> - - </div> - - - <hr/> - - <div role="contentinfo"> - <p> - © Copyright 2014 - 2018, British Columbia Institute of Technology. - Last updated on Mar 22, 2018. - </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:'3.1.8', - 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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