How can I create an "update" form in Symfony 4? - forms

Question

With this form I want to update my database entry:
myController.php
public function index($id, $slug, Request $request, UserPasswordEncoderInterface $passwordEncoder)
{
$item = new User();
$item= $this->getDoctrine()->getRepository(User::class)->find($id);
$form = $this->createFormBuilder($item)
->add('username', TextType::class, array('attr' => array('class' => 'form-control')))
->add('email', EmailType::class, array('attr' => array('class' => 'form-control')))
->add('is_active', HiddenType::class)
->add('plainPassword', RepeatedType::class, array('type' => PasswordType::class,'invalid_message' => 'The password fields must match.','options' => array('attr' => array('class' => 'password-field')),'required' => true,'first_options' => array('label' => 'Passwort', 'attr' => array('class' => 'form-control')),'second_options' => array('label' => 'Passwort wiederholen', 'attr' => array('class' => 'form-control')),))
->add('cancel', ButtonType::class, array('label' => 'Cancel','attr' => array('class' => 'cancel form-btn btn btn-default pull-right close_sidebar close_h')))
->add('update', SubmitType::class, array('label' => 'Update','attr' => array('class' => 'form-btn btn btn-info pull-right','style' => 'margin-right:5px')))
->getForm();
$form->handleRequest($request);
if($form->isSubmitted() && $form->isValid()) {
$entityManager = $this->getDoctrine()->getManager();
$entityManager->flush();
return $this->redirectToRoute('pages', array(
'slug' => $slug,
));
}
return $this->render('form.html.twig', ['form' => $form->createView()]);
}
form.html.twig:
{{ form_start(form) }}
<div>
{{ form_label(form.username) }}
{{ form_widget(form.username) }}
{{ form_errors(form.username) }}
{{ form_help(form.username) }}
</div>
<div>
{{ form_label(form.email) }}
{{ form_widget(form.email) }}
{{ form_errors(form.email) }}
{{ form_help(form.email) }}
</div>
<div>
{{ form_widget(form.is_active) }}
{{ form_errors(form.is_active) }}
{{ form_help(form.is_active) }}
</div>
<div>
{{ form_label(form.plainPassword.first) }}
{{ form_widget(form.plainPassword.first) }}
<div class="text-red">{{ form_errors(form.plainPassword.first) }}</div>
{{ form_help(form.plainPassword.first) }}
</div>
<div>
{{ form_label(form.plainPassword.second) }}
{{ form_widget(form.plainPassword.second) }}
<div class="text-red">{{ form_errors(form.plainPassword.second) }}</div>
{{ form_help(form.plainPassword.second) }}
</div>
{{ form_end(form) }}
But when I edit for example the username in my form and I click on "Update" then I get the error message
An exception occurred while executing 'INSERT INTO members (username,
password, email, is_active) VALUES (?, ?, ?, ?)' with params ["cat2",
"123", "cat#cat.de", "1"]:
SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry
'cat#cat.de' for key 'UNIQ_12A0D2FFE7927C74'
I actually expect the SQL make an UPDATE instead of INSERT...

Answer 1

You need to load the User from the UserRepository::find($id)
use App\Repository\UserRepository;
// ...
class MyController
{
public function index($id, $slug,
Request $request,
UserPasswordEncoderInterface $passwordEncoder,
UserRepository $userRepository)
{
$item = $userRepository->find($id);
if(NULL === $item) {
throw $this->createNotFoundException('could not find this user.');
}
$form = $this->createFormBuilder($item)
// ...
}
// ...
}