How do I use TrSteelCkEditorBundle in Symfony2? - symfony

Question

I am new in the world of sf2 and I am trying to learn it.
I installed TrSteelCkEditorBundle with composer and now I am trying to get the editor in a view.
My bundle is active in the AppKernel.
As a beginner my question is:
What do I have to do to make it works?
I put this code and paste the value in the render
$form = $this->createFormBuilder()
->add('title', 'text')
->add('content', 'ckeditor', array(
'transformers' => array(),
))
->getForm();
And in the twig view i have line 6:
{{ form_widget(form) }}
but i'm getting an error :
An exception has been thrown during the rendering of a template ("Catchable Fatal Error:
Argument 1 passed to Symfony\Component\Form\FormRenderer::searchAndRenderBlock()
must be an instance of Symfony\Component\Form\FormView,
instance of Symfony\Component\Form\Form given, called in
/Applications/mamp/htdocs/Sf2/app/cache/dev/twig/5c/eb/e10823d760716de7f56b39640e79.php
on line 29 and defined in
/Applications/mamp/htdocs/Sf2/vendor/symfony/symfony/src/Symfony/Component/Form/FormRenderer.php
line 131") in amTestBundle:Default:index.html.twig at line 6.
If someone had a clue to resolve that it'll help me a lot.
Thank you.

Answer 1

The {{ form_widget(form) }} doesn't work because your $form variable is the form itself. In order to get Twig to create the widgets for it, you have to send it to the Twig template with:
$form->createView()
Here is an example of when you return in your controllerAction:
return $this->render(
'AcmeFooBundle:Acme:template.html.twig',
array('form' => $form->createView()) //Here you see the createView()
);