如何从控制器中调用一个定义为服务的表单？

Question

how can I call a form (which is defined as a service) from the controller

//Here my code in the controller befor I define Form_NameType() as a service
$form = $this->createForm(new Form_NameType(), $obect_that_hydrate_my_form); 

.

 // SERVICE
 blogbundle.Form_Nameform:
    class: BlogBundle\Form\Form_NameType
    arguments: [@security.context]
    tags:
      - {name: form.type, alias: FormAsAService }

Answer 1

To call any service in Symfony you need to use get method of ContainerInterface. So in Controller class you should call:

$form = $this->container->get('blogbundle.Form_Nameform');

If your Controller extends Symfony\Bundle\FrameworkBundle\Controller\Controller then there is an alias for that method, and you can use this syntax (which is shorter):

$form = $this->get('blogbundle.Form_Nameform');

Check documentation of how to use services.