Symfony 2 Forms, embedding a collection in an inline collection

Question

I have a data structure where a Topic has many Questions (one for many) and a Question has many answers (one for many).

I installed Questions as a built-in collection in the form of a theme, and it all works for me 100% thanks to the recording

You can see the really long line below, which I think is the prototype prototype (!) For the response form. I do not see the possibility of replacing only those related to the question [__name__] , and not related to the answer.

Doing normal

 var newForm = prototype.replace(/__name__/g, collectionHolder.children().length); 

when creating a real instance of the question form, of course, it replaces all instances of __name__ with the same value, therefore, when the data prototype is created for the response form, it has already replaced all substitutes.

This is what the prototype data for the answer form looks like when I clicked to add a real question form

 <div class="control-group"> <label class="control-label">1label__</label> <div class="controls"> <div id="topic_questions_1_answers_1"> <div class="control-group"> <label for="topic_questions_1_answers_1_answerText" class="control-label">option</label> <div class="form-row-errors"></div> <div class="controls"> <input type="text" id="topic_questions_1_answers_1_answerText" name="topic[questions][1][answers][1][answerText]" required="required" maxlength="255" /> </div> </div> </div> </div> 

As you can see, the __name__ placeholder does not work at all - it has already been replaced by the question form counter when the question form was created.

Is it possible to implement such a collection with many depths using the Symfony mechanism?

While he is trying to use the same placeholder for each level, I don’t see how to do it.

Answer 1

Do you use at least Symfony 2.1? If so, you can change the __name__ label using the prototype_name property:

http://symfony.com/doc/master/reference/forms/types/collection.html#prototype-name

In your form:

 ->add('answers', 'collection', array( 'type' => new AnswerType(), 'allow_add' => true, 'prototype_name' => 'another_name' ))