Hi everyone.
I'm having a rather odd problem which I suspect is either a bug or
more likely I'm trying to do things the wrong way.I'd appreciate if
you can shed a little light on the proper way to address this. Let me
describe the issue.
We have a container with the following ORM definition:
Container:
type: entity
table: container
id:
id:
type: integer
generator:
strategy: AUTO
fields:
name:
type: string
length: 25
oneToMany:
children:
targetEntity: Container
mappedBy: parent
manyToOne:
parent:
targetEntity: Container
inversedBy: children
joinColumn:
name: parent_id
referencedColumnName: id
And a FormType which looks as follows:
use
Symfony\Component\Form\AbstractType,
Symfony\Component\Form\FormBuilder
;
class ContainerType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder
->add('name', 'text')
->add('children', 'collection', array(
'type' => new ContainerType(),
'prototype' => false,
'allow_add' => true,
'allow_delete' => true, ));
}
}
In the Controller we create a formBuilder by:
$data = new Container();
$form = $this->get('form.factory')->create(new
ContainerType());
$form->setData($data);
....etc...
The form will crash with a:
'Fatal error: Maximum function nesting level of '100' reached,
aborting! in /app/cache/dev/twig/15/ff/
401ed143a10a78a26e39b6e98c03.php on line 38'
And a long stack trace showing the form recursing on itself.
I looked at the code and I didn't see an easy way to stop the
Container from rendering an infinite depth. What I'd really want is
for it to throw out all the existing children from a parent but when a
child does not exist not to create a prototype one....
Obviously the buildForm method calls "new ContainerType" so that would
be at the root of the issue. However I can't seem to pass
"\ContainerType" as type.
Can anyone shed a light on the correct way to do this?
Thanks!
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