title: Call createForm() and generateUrl() from service in Symfony2
body: <p>I would like have access to controller methods from my custom service. I created class MyManager and I need to call inside it <code>createForm()</code> and <code>generateUrl()</code> functions. In controller I can use: <code>$this-&gt;createForm(...)</code> and <code>$this-&gt;generateUrl(...)</code>, but what with service? It is possible? I really need this methods! What arguments I should use?</p>