Symfony FormType: how to get prototype in form type file

Question

In symfony form type I have a FormType named

• KeywordType
• MessageType
• ReplyTextMessage
• ReplyImageMessage

and the code inside look like this

KeywordType

$builder
   ->add('messages', CollectionType::class, [
      'entry_type' => MessageType::class,
      'prototype' => true,
      'allow_add' => true,
      'allow_delete' => true,
      'by_reference' => false,
   )]

MessageType

$builder
   ->add('type', ChoiceType::class, [
      'choices' => array_flip([
         'text' => ReplyMessageInterface::TEXT,
         'image' => ReplyMessageInterface::IMAGE,
      ]),
   )]

Questions is

How to get Prototype of ReplyTextMessageType and ReplyImageMessageType inside MessageType

because I want to get all of ReplyMessageType in the form_theme

If you don't understand my question I'll be here to answer any miss understand.

Thank you for your advance.

Answer 1

Problem solve!

You must getForm() by used $builder->create() function then set that $builder->create() as an array and set attribute by use $builder->setAttribute()

And in function buildView() you just get attribute by use $view->vars['nameAttribute'] and do like my code so your form_theme will have prototype

for more information please look at my code below

/**
 * @param FormBuilderInterface $builder
 * @param array $options
 */
public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('type', ChoiceType::class, [
            'required' => true,
            'choices' => array_flip([
                'text' => self::TEXT_VALUE,
                'sticker' => self::STICKER_VALUE,
                'image' => self::IMAGE_VALUE,
            ]),
        ])
    ;

    $prototypes = [];

    $replyMessageTypes = [
        self::TEXT_VALUE => ReplyTextMessageType::class,
        self::STICKER_VALUE => ReplyStickerMessageType::class,
        self::IMAGE_VALUE => ReplyImageMessageType::class
    ];

    foreach ($replyMessageTypes as $name => $type) {
        $formBuilder = $builder->create(
            $name, $type, []
        );

        $prototypes[$name] = $formBuilder->getForm();
    }

    $builder->setAttribute('replyMessageTypes', $prototypes);
}

/**
 * @param FormView $view
 * @param FormInterface $form
 * @param array $options
 *
 * @return mixed
 */
public function buildView(FormView $view, FormInterface $form, array $options)
{
    parent::buildView($view, $form, $options);

    $view->vars['replyMessageTypes'] = [];

    foreach ($form->getConfig()->getAttribute('replyMessageTypes') as $type => $prototype) {
        /** @var FormInterface $prototype */
        $view->vars['replyMessageTypes'][$type] = $prototype->createView($view);
    }
}