Symfony2 is disabled

Question

I am trying to implement dynamic forms in Symfony2. The form is simple: first, the user selects a broker, and then selects an account in accordance with this broker. Therefore, the account is disabled until a broker is selected.

If text is read_only => true may be the solution, but select does not have the readonly attribute. So, I disabled selection, and then tried to enable select using jQuery:

 $('#form select').prop('disabled', false); 

The problem is that on the server side, Symfony cannot handle a disabled form field. Its value is simply set to zero.

I was thinking about possible solutions. First of all, I could manually set the field value in the controller, because I tested that the value of the form field is actually in the request parameter, Symfony simply ignores its processing and matches it to the object. I think this will work, however this is not a good solution.

Secondly, I can turn off the selection using hacking on the client side or add hidden input to the form and manually set its value using Javascript.

Is there a standard solution here?

My form object is as follows:

 $builder->add('broker', 'entity', array( 'class' => 'MyBundle:Broker', 'property' => 'name', 'query_builder' => function(BrokerRepository $br) { return $br->getActiveBrokersQuery(); }, 'required' => true, 'empty_value' => 'Choose a broker', )); $builder->add('accountType', 'entity', array( 'class' => 'MyBundle:AccountType', 'empty_value' => 'Choose a broker first', 'disabled' => true, )); 

If I do not turn off the selection, everything will be fine, Symfony will do the job fine.

Answer 1

I managed to solve the problem based on hakre suggestions. Therefore, I needed to inform the form that the field was no longer disabled. Thus, I added the PRE_SUBMIT event to the form in which I set disabled to false in the accountType field.

 $builder->addEventListener( FormEvents::PRE_SUBMIT, function(FormEvent $event) { $event->getForm()->add('accountType', 'entity', array( 'class' => 'XXBundle:AccountType', 'empty_value' => 'Choose a broker first', 'disabled' => false )); } ); 

Thanks for your suggestions!