Symfony2, how to access Entity values inside Form? - symfony

Question

I have a FormType in Symfony2. It is used to display the settings. The settings are stored as entities in a database. Using Doctrine2, I fetch the settings and create a form, like below:
public function showSettingsAction()
{
if(false === $this->get('security.context')->isGranted('ROLE_ADMIN')) {
throw new AccessDeniedException();
}
$settings = new CommunitySettings();
$repository = $this->getDoctrine()->getRepository('TestTestingBundle:CommunitySettings');
$allSettings = $repository->findAll();
$form = $this->createForm('collection', $allSettings, array(
'type' => 'settings_form'
));
$request = $this->container->get('request');
if($request->getMethod() === 'POST') {
$form->bindRequest($request);
if($form->isValid()) {
$em = $this->getDoctrine()->getEntityManager();
$settings = $form->getData();
foreach($settings as $setting) {
$oldsetting = $em->getRepository('TestTestingBundle:CommunitySettings')
->find($setting->getId());
if(!$oldsetting) {
throw $this->createNotFoundException('No setting found for id '.$setting->getId());
}
$oldsetting->setSettingValue($setting->getSettingValue());
$em->flush();
}
$this->get('session')->setFlash('message', 'Your changes were saved');
return new RedirectResponse($this->generateUrl('_admin_settings'));
}
}
return $this->render('TestTestingBundle:Admin:settings.html.twig',array(
'form' => $form->createView(),
));
}
This is the line of code where I send the array of $allSettings to the settings_form:
$form = $this->createForm('collection', $allSettings, array(
'type' => 'settings_form'
));
This is how the settings form looks like:
public function buildForm(FormBuilder $builder, array $options)
{
$builder->add('settingValue', 'text');
}
I have a label, a value and a field type stored in the entity and I would like to use those for building the form. However, when I use this it only shows me the variable names in the Form, like this:
0
Settingvalue //Is a checkbox, where it says Settingvalue, it should be the label stored in the entity
0
1
Settingvalue //Is a integer, where it says Settingvalue, it should be the label stored in the entity
3000
How can I use the variables stored in the Entity to build the Form fields with?

Answer 1

You can use an event listener in your settings form type to solve this problem.
public function buildForm(FormBuilder $builder, array $options)
{
$formFactory = $builder->getFormFactory();
$builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) use ($formFactory) {
$form = $event->getForm();
$data = $event->getData();
$form->add($formFactory->createNamed('settingsValue', $data->getSettingsType(), array(
'label' => $data->getSettingsLabel(),
)));
});
}