How can form data be properly processed and saved to the database in Symfony2 controllers after validation?

To properly process and save form data to the database in Symfony2 controllers after validation, you can use the Entity Manager to persist and flush the entity object. After validating the form data, you can create a new entity object, set its properties with the form data, persist it using the Entity Manager, and then flush to save it to the database. 

// Process and save form data to the database
$form = $this->createForm(MyFormType::class);
$form->handleRequest($request);

if ($form->isSubmitted() && $form->isValid()) {
    $data = $form->getData();

    $entity = new MyEntity();
    $entity->setProperty1($data['property1']);
    $entity->setProperty2($data['property2']);

    $em = $this->getDoctrine()->getManager();
    $em->persist($entity);
    $em->flush();

    // Redirect or return response
}

Keywords

Symfony2 PHP form data database validation

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