Symfony Forms, sub/embedded forms

Question

I would like to update multiple entities and with the update I would like to add a field called "comment". This field is not related to the entity; I will save the comment in a separate table.

This is what I've tried (Controller code below) - this is just a sample of the code, but should give an idea of what I am trying to do:

$form = $this->createFormBuilder();

foreach (array(1,2,3) as $id) {
    $subform = $this->createFormBuilder()
        ->add('story', 'entity', array(
            'class' => 'AcmeDemoBundle:Story',
            'query_builder' => function($em) use ($id) {
                 $qb = $em->createQueryBuilder('s')
                 $qb->select(array('j'))
                     ->add('from', 'AcmeDemoBundle:Story')
                     ->addWhere('j.id = :id')
                     ->setParameter('id', $id);
                 return $qb;
            },
            'property' => 'id',
            'required' => true, 'expanded' => true, 'multiple' => true
        )
        ->add('comment', 'textarea');
}
$form->add($subform, '', array('label' => '');

...
// then I send the form to the template with $form->createView()

What I expected to see was a form with each entity (1,2,3) as a checkbox and next to that a comment block. Instead what happens is I only get one checkbox and one comment and always for the last entity in the array (in the above case, entity number 3). It seems that the form builder ignores all the subforms that I add and only takes the last one - this is also the case when looking at the SQL that goes to the DB, there is only a select for # 3 and no selects for 1 and 2.

Given that the html produced supports what I am trying to do, I expect the above to work:

<input type="checkbox" id="form_form_story_0" name="form[form][story][]" value="3">
<textarea id="form_form_comment"  name="form[form][comment] />

I've also tried giving the fields unique names - for example ->add('story_' . $id) etc, but that didn't do anything. I also tried giving each querybuilder a unique name $em->createQueryBuilder('s'.$id) but that didn't work either.

Also, it doesn't work if I remove the query_builder (and just use the class)

Update: it doesn't seem to have anything to do with the entity, even if I try and create subforms with plain text fields it doesn't work...

Update 2 if the sub form has a different name using:

$subForm = $this->get('form.factory')->createNamedBuilder("form$id"), 'form', array())

then it works. Unfortunately this means that I can't loop through the subforms inside twig.

mogoman · Accepted Answer · 2013-01-31 12:09:03Z

0

It can't work as stated/asked above.

->add

overwrites a previous copy of that child, as seen here:

Symfony\Component\Form
...
public function add(FormInterface $child)
...
$this->children[$child->getName()] = $child;

To "solve" the problem I discarded the idea of sub forms and named each item separately like this:

$form
...
->add("comment_$id", 'textarea')

made an array of the entities and in twig render the comment field for that entity like this:

{% for entity in entities %}
...
{% set child = "comment_" ~ entity.id %}{{ form_widget(form.children[child]) }}
...

answered Jan 31, 2013 at 12:09

mogoman

2,3081 gold badge25 silver badges29 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

alpaca · Accepted Answer · 2015-06-15 16:38:00Z

0

Your example code contains error: you adding $subform after cycle, so you explicitly adding only last generated $subform object.
Noted line $this->children[$child->getName()] = $child; prevents from "simple" way to add subform builders, but there is a workaround:

Instead of calling $this->createFormBuilder() helper for subform (this will give it name "form"), you can create biulder with $this->container->get('form.factory')->createNamedBuilder('sub_form_1') with explicit name.

answered Jun 15, 2015 at 16:38

alpaca

761 silver badge5 bronze badges

1 Comment

alpaca Over a year ago

BTW, when calling add with FormBuilder instance, it ignores all other arguments, kinda overloading php-way.

Collectives™ on Stack Overflow

Symfony Forms, sub/embedded forms

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related