Symfony2 OneToOne annotation inserting/updating related entity - php

Question

I have Product entity related to Settings entity with one-to-one relation. All products are imported and Product don't have related row in Setting table at start.
When updating the product using Symfony proper relation is created so I have OneToOne between Product and Setting. This is done using simple INSERT statement:
INSERT INTO settings (id_product, setting_1, setting_3, setting_3) VALUES (11153, '0', '1', '1');
This insert is made automaticaly by Symfony thanks to annotations and method:
$em->merge($product);
$em->flush();
Unfortunately when I try to update product next time another insert to setting table is done and obviously I have and error becouse id_product is PK and have to be unique. What should I do to force Symfony to do an UPDATE instead of INSERT if there is a relation between Product and Setting? I create my music using the newest version of Symfony.

Answer 1

Update is not done in the same way that you would create an entity. Here is a very quick example (you'd have to handle a few exceptions etc.. but code is 'short' to show you the differences:
1 When your create a Task, you create a new entity Task and save it to the database
2 When you update a Task, you first fetch that task from the database and then save it to the database.
Create:
public function newAction(Request $request)
{
// create a task and give it some dummy data for this example
$task = new Task();
$task->setTask('Write a blog post');
$task->setDueDate(new \DateTime('tomorrow'));
$form = $this->createFormBuilder($task)
->add('task', 'text')
->add('dueDate', 'date')
->add('save', 'submit')
->getForm();
if ($request->isMethod('POST')) {
$form->bind($request);
if ($form->isValid()) {
// perform some action, such as saving the task to the database
$em = $this->getDoctrine()->getManager();
$em->persist($task);
$em->flush();
return $this->redirect($this->generateUrl('task_success'));
}
}
return $this->render('AcmeTaskBundle:Default:new.html.twig', array(
'form' => $form->createView(),
));
}
Update :
public function updateAction(Request $request, $taskId)
{
// get the task
$task = $this->getDoctrine()
->getRepository('AcmeTaskBundle:Task');
->find($taskId);
$form = $this->createFormBuilder($task)
->add('task', 'text')
->add('dueDate', 'date')
->add('save', 'submit')
->getForm();
if ($request->isMethod('POST')) {
$form->bind($request);
if ($form->isValid()) {
// update the task
$em->flush();
return $this->redirect($this->generateUrl('task_success'));
}
}
return $this->render('AcmeTaskBundle:Default:new.html.twig', array(
'form' => $form->createView(),
));
}
I'd recommend that you check out:
Databases and Doctrine
Forms