title: CodeIgniter linking to another page/controler
body: <p>I am a beginner in CodeIgniter framework and I have problem with links. I found a couple of pages in which is explained how to link pages, but from some reason I have  problem to link two pages. I did this:</p>
  
  <pre><code>&lt;a href="&lt;?php echo site_url('controller_proffesor') ?&gt;"&gt;Insert Labwork&lt;/a&gt;
  </code></pre>
  
  <p>and that should call controller_proffesor method :</p>
  
  <pre><code>function index(){
      $this-&gt;load-&gt;view('proffesor_view_insert_labwork');
  }
  </code></pre>
  
  <p>i try also this:</p>
  
  <pre><code>&lt;a href="&lt;?php echo site_url('controller_proffesor/index') ?&gt;"&gt;Insert Labwork&lt;/a&gt;
  </code></pre>
  
  <p>but when i click on that link this is what i get:</p>
  
  <pre><code>A PHP Error was encountered
  Severity: Notice
  Message: Undefined property: Controller_proffesor::$load
  Filename: controllers/controller_proffesor.php
  Line Number: 7
  Backtrace:
  </code></pre>
  
  <p>i have also include this line in my autoload file :</p>
  
  <pre><code>$autoload['helper'] = array('url','form');
  </code></pre>
  
  <p>What am I doing wrong?</p>