CODEWITHSUNDEEP
phpformssymfonytypesdoctrine-orm
user1236048
user1236048

Reputation: 5602

Symfony 2 - Dynamic form generation based on Entities association

I have the following setup:

Entity Result:

/**
 * @ORM\OneToMany(targetEntity="Answer", mappedBy="result", cascade={"persist", "remove"}, orphanRemoval=true)
 */
private $answers;

Entity Answer:

/**
 * @ORM\ManyToOne(targetEntity="Result", inversedBy="answers", cascade={"persist"})
 * @ORM\JoinColumn(name="result_id", referencedColumnName="id")
 */
private $result;

Form ResultType:

public function buildForm(FormBuilderInterface $builder, array $options)
{      
    $builder
        ->add('answers', 'collection', array(
            'type' => new AnswerType(),               
        ))
    ;
}

Form AnswerType: - this one I want to make dynamic, currently is deprecated:

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder->add('value', 'choice', array(
        'choices'   => Answer::getChoices(),
        'expanded'  => true,
        'required'  => true,
    ))
    ;
}

What I want to do:

Result form has a collection of AnswerType. I want that each of this AnswerType to be dynamic depending on the current Answer is linked to.

For example if I have a function on Answer::getRandomStatus() - if it is true - the value field of AnswerType to be text, choice otherwise.

My guess was in buildForm method of AnswerType, but $builder->getData() returns null, and I can't make a distinction.

Upvotes: 2

Views: 2284

Answers (2)

juanmf
juanmf

Reputation: 2004

I´m also looking for this, but want an already implemented solution. Take a look at the source code for the CollectionType, it makes extensive use of these events.

https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php

Upvotes: 0

user1452962
user1452962

Reputation: 386

this should give you the answers you're looking for:

http://symfony.com/doc/2.0/cookbook/form/dynamic_form_modification.html

to have a better understanding of the above you could have a look over:

https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Form/FormEvents.php

Upvotes: 3

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