在Symfony FormType类中设置选项

Question

I'm creating a form in Symfony2. The form has a field which is mapped to an entity array like this:

$builder
    ->add('card', 'entity', array(
        'class' => 'AppBundle:Card',
        'property' => 'description',
        'choices' => $choices
    ));

I load the $choices array in my Controller. If I create the Form using the FormBuilder in the Controller I can use easily set the choices option, but I'd like to keep it in its own class to avoid bloating the Controller. Is there a clean way to inject the $choices array when creating the form?

Answer 1

I'm not sure this is the best way, and it does seem a bit over-engineered, but I ended up defining the form as a service like this:

my_custom_form_service:
    class: AppBundle\Form\MyFormType
    calls:
        - [ setUser, ["@security.context"] ]
    tags:
        - { name: form.type, alias: my_form }

I needed the user object because I obtain the choices array from that entity.