title: What is Form Context in Symfony2
body: <p>I am getting started with Symfony2 and I am trying to understand the Form Component. I am looking at this page <a href="http://docs.symfony-reloaded.org/guides/forms/overview.html" rel="nofollow">http://docs.symfony-reloaded.org/guides/forms/overview.html</a></p>
  
  <p>And I can understand how we create form classes but what is confusing is how we actually use those forms in our controller. </p>
  
  <pre><code>$form = ContactForm::create($this-&gt;get('form.context'));
  </code></pre>
  
  <p>Does anyone have a more in depth explanation of the form.context portion of this code, and the actual process behind using forms within controllers?</p>
  
  <p>Thanks.</p>