Call to a member function get() on a non-object Symfony2 - symfony

Question

Hi I want to render a form in symFony2 with dynamic fields added to it.
So I have wrote code in controller as:
public function getDataAction(){
$handler = new AnotherClass();
$object = $handler->getForm($getAdditionalData);
}
and "AnotherClass" defined as following:
class AnotherClass extends Controller implements requiredInterface{
public function getForm($formData){
//Here i want to write Logic to render a dynamic form with dynamic fields
$form = $this->createFormBuilder($formData)
->setAction($this->generateUrl('me_route_go'))
// Set form field of additional data
foreach ($formData as $k => $v) {
$form->add($k, 'text');
}
//Create form and submit button
$form = $form->add('submit', 'submit')->add('Cancel', 'reset')->getForm();
$form = $form->getForm();
}
}
}
But here I am getting following error:
Error: Call to a member function get() on a non-object.
return $this->container->get('form.factory')->createBuilder($type, $data, $options);
Please suggest what could be the issue.
thanks in advance..

Answer 1

Your controller AnotherClass requires the Dependency Injection Container since you are extending the base Controller class, you have to set it after you instantiate it :
public function getDataAction(){
$handler = new AnotherClass();
$handler->setContainer($this->container);
$object = $handler->getForm($getAdditionalData);
}
You can also create it as a service :
services.yml
name.of.your.service:
class: Path\To\AnotherClass
calls:
- [setContainer, [ "#service_container" ]]
And then :
public function getDataAction(){
$handler = $this->get('name.of.your.service');
$object = $handler->getForm($getAdditionalData);
}