Symfony2 How to process dynamic embed forms collection? - php

Question

I try this cookbook about embed form:
http://symfony.com/doc/current/cookbook/form/form_collections.html
But the embed foreign key (task_id field in Tag table) is not save, always NULL
Here the complete code: https://gist.github.com/1755140
Do you know why?
Thank
Edit::
My trouble was in process form action. Like the tag form is embed dynamically, so i don't know how many tag(s) i will have. If i add in createAction
$tag1 = new Tag();
$task->addTags($tag1);
only the first embed form was correctly save! How to save the other tags?
public function createAction(Request $request)
{
$task = new Task();
$tag1 = new Tag();
$task->addTags($tag1);
$form = $this->createForm(new TaskType(), $task);
$form->bindRequest($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getEntityManager();
$em->persist($task);
$em->flush();
return $this->redirect($this->generateUrl('new_task', array('id' => $task->getId())));
}
return array(
'form' => $form->createView()
);
}
Edit2:
My solution which resolve the trouble, what do you think about it? Better?
public function createAction(Request $request)
{
$task = new Task();
$tasks = $request->request->get('task', array());
if (isset($tasks['tags'])) {
$tags = $tasks['tags'];
foreach($tags as $tag) {
$tag = new Tag();
$task->addTags($tag);
}
}
$form = $this->createForm(new TaskType(), $task);
$form->bindRequest($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getEntityManager();
$em->persist($task);
$em->flush();
return $this->redirect($this->generateUrl('new_task', array('id' => $task->getId())));
}
return array(
'form' => $form->createView()
);
}
Edit3:
A much better alternative (not tested again)
http://www.siteduzero.com/tutoriel-3-523899-creer-des-formulaires-avec-symfony2.html#ss_part_2
public function createAction(Request $request)
{
$task = new Task();
$form = $this->createForm(new TaskType(), $task);
$form->bindRequest($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getEntityManager();
$em->persist($task);
foreach($task->getTags() as $tag) {
$em->persist($tag);
}
$em->flush();
return $this->redirect($this->generateUrl('new_task', array('id' => $task->getId())));
}
return array(
'form' => $form->createView()
);
}

Answer 1

In TaskController on line 29 try to use $task->addTags($tag1); instead of $task->getTags()->add($tag1);

Answer 2

I don't understand. Is this solution wrong?
if ($form->isValid()) {
$em = $this->getDoctrine()->getEntityManager();
foreach($task->getTags() as $tag) {
$tag->setTask($task);
}
$em->persist($task);
$em->flush();
return $this->redirect($this->generateUrl('new_task', array('id' => $task->getId())));
}
It works and it seems simpler.