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- <div class="section" id="views">
-<h1>Views<a class="headerlink" href="#views" title="Permalink to this headline">¶</a></h1>
-<p>A view is simply a web page, or a page fragment, like a header, footer,
-sidebar, etc. In fact, views can flexibly be embedded within other views
-(within other views, etc., etc.) if you need this type of hierarchy.</p>
-<p>Views are never called directly, they must be loaded by a
-<a class="reference internal" href="controllers.html"><em>controller</em></a>. Remember that in an MVC framework, the
-Controller acts as the traffic cop, so it is responsible for fetching a
-particular view. If you have not read the
-<a class="reference internal" href="controllers.html"><em>Controllers</em></a> page you should do so before
-continuing.</p>
-<p>Using the example controller you created in the
-<a class="reference internal" href="controllers.html"><em>controller</em></a> page, let&#8217;s add a view to it.</p>
-<div class="section" id="creating-a-view">
-<h2>Creating a View<a class="headerlink" href="#creating-a-view" title="Permalink to this headline">¶</a></h2>
-<p>Using your text editor, create a file called blogview.php, and put this
-in it:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">html</span><span class="o">&gt;</span>
-<span class="o">&lt;</span><span class="nx">head</span><span class="o">&gt;</span>
- <span class="o">&lt;</span><span class="nx">title</span><span class="o">&gt;</span><span class="nx">My</span> <span class="nx">Blog</span><span class="o">&lt;/</span><span class="nx">title</span><span class="o">&gt;</span>
-<span class="o">&lt;/</span><span class="nx">head</span><span class="o">&gt;</span>
-<span class="o">&lt;</span><span class="nx">body</span><span class="o">&gt;</span>
- <span class="o">&lt;</span><span class="nx">h1</span><span class="o">&gt;</span><span class="nx">Welcome</span> <span class="nx">to</span> <span class="nx">my</span> <span class="nx">Blog</span><span class="o">!&lt;/</span><span class="nx">h1</span><span class="o">&gt;</span>
-<span class="o">&lt;/</span><span class="nx">body</span><span class="o">&gt;</span>
-<span class="o">&lt;/</span><span class="nx">html</span><span class="o">&gt;</span>
-</pre></div>
-</div>
-<p>Then save the file in your <em>application/views/</em> directory.</p>
-</div>
-<div class="section" id="loading-a-view">
-<h2>Loading a View<a class="headerlink" href="#loading-a-view" title="Permalink to this headline">¶</a></h2>
-<p>To load a particular view file you will use the following method:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;name&#39;</span><span class="p">);</span>
-</pre></div>
-</div>
-<p>Where name is the name of your view file.</p>
-<div class="admonition note">
-<p class="first admonition-title">Note</p>
-<p class="last">The .php file extension does not need to be specified
-unless you use something other than .php.</p>
-</div>
-<p>Now, open the controller file you made earlier called Blog.php, and
-replace the echo statement with the view loading method:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;?</span><span class="nx">php</span>
-<span class="k">class</span> <span class="nc">Blog</span> <span class="k">extends</span> <span class="nx">CI_Controller</span> <span class="p">{</span>
-
- <span class="k">public</span> <span class="k">function</span> <span class="nf">index</span><span class="p">()</span>
- <span class="p">{</span>
- <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;blogview&#39;</span><span class="p">);</span>
- <span class="p">}</span>
-<span class="p">}</span>
-</pre></div>
-</div>
-<p>If you visit your site using the URL you did earlier you should see your
-new view. The URL was similar to this:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">example</span><span class="o">.</span><span class="nx">com</span><span class="o">/</span><span class="nx">index</span><span class="o">.</span><span class="nx">php</span><span class="o">/</span><span class="nx">blog</span><span class="o">/</span>
-</pre></div>
-</div>
-</div>
-<div class="section" id="loading-multiple-views">
-<h2>Loading multiple views<a class="headerlink" href="#loading-multiple-views" title="Permalink to this headline">¶</a></h2>
-<p>CodeIgniter will intelligently handle multiple calls to
-<tt class="docutils literal"><span class="pre">$this-&gt;load-&gt;view()</span></tt> from within a controller. If more than one call
-happens they will be appended together. For example, you may wish to
-have a header view, a menu view, a content view, and a footer view. That
-might look something like this:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;?</span><span class="nx">php</span>
-
-<span class="k">class</span> <span class="nc">Page</span> <span class="k">extends</span> <span class="nx">CI_Controller</span> <span class="p">{</span>
-
- <span class="k">public</span> <span class="k">function</span> <span class="nf">index</span><span class="p">()</span>
- <span class="p">{</span>
- <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;page_title&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;Your title&#39;</span><span class="p">;</span>
- <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;header&#39;</span><span class="p">);</span>
- <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;menu&#39;</span><span class="p">);</span>
- <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;content&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
- <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;footer&#39;</span><span class="p">);</span>
- <span class="p">}</span>
-
-<span class="p">}</span>
-</pre></div>
-</div>
-<p>In the example above, we are using &#8220;dynamically added data&#8221;, which you
-will see below.</p>
-</div>
-<div class="section" id="storing-views-within-sub-directories">
-<h2>Storing Views within Sub-directories<a class="headerlink" href="#storing-views-within-sub-directories" title="Permalink to this headline">¶</a></h2>
-<p>Your view files can also be stored within sub-directories if you prefer
-that type of organization. When doing so you will need to include the
-directory name loading the view. Example:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;directory_name/file_name&#39;</span><span class="p">);</span>
-</pre></div>
-</div>
-</div>
-<div class="section" id="adding-dynamic-data-to-the-view">
-<h2>Adding Dynamic Data to the View<a class="headerlink" href="#adding-dynamic-data-to-the-view" title="Permalink to this headline">¶</a></h2>
-<p>Data is passed from the controller to the view by way of an <strong>array</strong> or
-an <strong>object</strong> in the second parameter of the view loading method. Here
-is an example using an array:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
- <span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;My Title&#39;</span><span class="p">,</span>
- <span class="s1">&#39;heading&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;My Heading&#39;</span><span class="p">,</span>
- <span class="s1">&#39;message&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;My Message&#39;</span>
-<span class="p">);</span>
-
-<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;blogview&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
-</pre></div>
-</div>
-<p>And here&#8217;s an example using an object:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Someclass</span><span class="p">();</span>
-<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;blogview&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
-</pre></div>
-</div>
-<div class="admonition note">
-<p class="first admonition-title">Note</p>
-<p class="last">If you use an object, the class variables will be turned
-into array elements.</p>
-</div>
-<p>Let&#8217;s try it with your controller file. Open it add this code:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;?</span><span class="nx">php</span>
-<span class="k">class</span> <span class="nc">Blog</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">index</span><span class="p">()</span>
- <span class="p">{</span>
- <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;title&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;My Real Title&quot;</span><span class="p">;</span>
- <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;heading&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;My Real Heading&quot;</span><span class="p">;</span>
-
- <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;blogview&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
- <span class="p">}</span>
-<span class="p">}</span>
-</pre></div>
-</div>
-<p>Now open your view file and change the text to variables that correspond
-to the array keys in your data:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">html</span><span class="o">&gt;</span>
-<span class="o">&lt;</span><span class="nx">head</span><span class="o">&gt;</span>
- <span class="o">&lt;</span><span class="nx">title</span><span class="o">&gt;&lt;?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$title</span><span class="p">;</span><span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">title</span><span class="p">&gt;</span>
-<span class="p">&lt;/</span><span class="nt">head</span><span class="p">&gt;</span>
-<span class="p">&lt;</span><span class="nt">body</span><span class="p">&gt;</span>
- <span class="p">&lt;</span><span class="nt">h1</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$heading</span><span class="p">;</span><span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
-<span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
-<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span>
-</pre></div>
-</div>
-<p>Then load the page at the URL you&#8217;ve been using and you should see the
-variables replaced.</p>
-</div>
-<div class="section" id="creating-loops">
-<h2>Creating Loops<a class="headerlink" href="#creating-loops" title="Permalink to this headline">¶</a></h2>
-<p>The data array you pass to your view files is not limited to simple
-variables. You can pass multi dimensional arrays, which can be looped to
-generate multiple rows. For example, if you pull data from your database
-it will typically be in the form of a multi-dimensional array.</p>
-<p>Here&#8217;s a simple example. Add this to your controller:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;?</span><span class="nx">php</span>
-<span class="k">class</span> <span class="nc">Blog</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">index</span><span class="p">()</span>
- <span class="p">{</span>
- <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;todo_list&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;Clean House&#39;</span><span class="p">,</span> <span class="s1">&#39;Call Mom&#39;</span><span class="p">,</span> <span class="s1">&#39;Run Errands&#39;</span><span class="p">);</span>
-
- <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;title&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;My Real Title&quot;</span><span class="p">;</span>
- <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;heading&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;My Real Heading&quot;</span><span class="p">;</span>
-
- <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;blogview&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
- <span class="p">}</span>
-<span class="p">}</span>
-</pre></div>
-</div>
-<p>Now open your view file and create a loop:</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">html</span><span class="o">&gt;</span>
-<span class="o">&lt;</span><span class="nx">head</span><span class="o">&gt;</span>
- <span class="o">&lt;</span><span class="nx">title</span><span class="o">&gt;&lt;?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$title</span><span class="p">;</span><span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">title</span><span class="p">&gt;</span>
-<span class="p">&lt;/</span><span class="nt">head</span><span class="p">&gt;</span>
-<span class="p">&lt;</span><span class="nt">body</span><span class="p">&gt;</span>
- <span class="p">&lt;</span><span class="nt">h1</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$heading</span><span class="p">;</span><span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
-
- <span class="p">&lt;</span><span class="nt">h3</span><span class="p">&gt;</span>My Todo List<span class="p">&lt;/</span><span class="nt">h3</span><span class="p">&gt;</span>
-
- <span class="p">&lt;</span><span class="nt">ul</span><span class="p">&gt;</span>
- <span class="cp">&lt;?php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$todo_list</span> <span class="k">as</span> <span class="nv">$item</span><span class="p">)</span><span class="o">:</span><span class="cp">?&gt;</span>
-
- <span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$item</span><span class="p">;</span><span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
-
- <span class="cp">&lt;?php</span> <span class="k">endforeach</span><span class="p">;</span><span class="cp">?&gt;</span>
- <span class="p">&lt;/</span><span class="nt">ul</span><span class="p">&gt;</span>
-
-<span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
-<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span>
-</pre></div>
-</div>
-<div class="admonition note">
-<p class="first admonition-title">Note</p>
-<p class="last">You&#8217;ll notice that in the example above we are using PHP&#8217;s
-alternative syntax. If you are not familiar with it you can read about
-it <a class="reference internal" href="alternative_php.html"><em>here</em></a>.</p>
-</div>
-</div>
-<div class="section" id="returning-views-as-data">
-<h2>Returning views as data<a class="headerlink" href="#returning-views-as-data" title="Permalink to this headline">¶</a></h2>
-<p>There is a 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">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;myfile&#39;</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>
-</pre></div>
-</div>
-</div>
-</div>
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