Tukukkk

My situation is this, I want to delete a user record from the database. This is simple enough to do. but there are 2 possible outcomes.

1. The user is deleted


2. The user has been referenced by a FK and the delete will fail, so, the user is marked disabled. (active/enabled = false)

My thoughts are that this action taken against the Users entity should be in the UsersRepository so that is where my method deleteUser($user) is. $user being the user object automatically queried via ParamConverter and passed to the repository method.

Because the work is done in the repository, that is where it makes sense to me to provide feedback from.

How do I addFlash() from my AppRepositoryUsersRepository extends ServiceEntityRepository? or should I do this "work" elsewhere?

You should add flash message from the controller as shown in official doc :

https://symfony.com/doc/current/controller.html

Also, if you are new to Symfony, you may want to take a look at how services work cause it's where a lot of your work and methods are gonna end up. if you use Doctrine an action to delete a user in a controller should looks like this:

MyAction(User $user){



    $em = $this->getDoctrine()->getManager();

    $em->remove($user);

    $em->flush();



    $this->addFlash(

        'notice',

        'Your user is now deleted!'

    );

   return $this->redirectToRoute('some_other_route');

}

That's a bit 'out of the box' and can of course be improved but you get the idea ... my advise is, get through some official doc, it's qui te easy to get launched :) eventually try to go through Knp symfony4 first courses it's 2-3 hours long and quite useful

I found the FlashBagInterface via console bin/console debug:autowiring

So normal dependency injection of SymfonyComponentHttpFoundationSessionFlashFlashBagInterface

and you can $this->FlashBagInterface->add() simple.

for completeness of answer, here is the code;

src/Repository/UsersRepository.php (most code stripped out for compactness)

<?php



namespace AppRepository;



// use ...

use DoctrineDBALExceptionForeignKeyConstraintViolationException;

use SymfonyComponentHttpFoundationSessionFlashFlashBagInterface;



// ...



class UsersRepository extends ServiceEntityRepository

{



    private $security;

    private $request;

    private $flash;



    public function __construct(RegistryInterface $registry, Security $security, RequestStack $request, FlashBagInterface $flash)

    {

        parent::__construct($registry, Users::class);

        $this->security = $security;

        $this->request = $request;

        $this->flash = $flash;

    }



    // ...



    /**

     * deleteUser

     *

     * @param Users $user

     * @return void

     */

    public function deleteUser($user)

    {

        $em = $this->getEntityManager();

        $user->setEnabled(false);

        $em->flush();

        try {

            $em->remove($user);

            $em->flush();

            $this->flash->add('notice', 'user.manager.user.deleted');

        } catch (ForeignKeyConstraintViolationException $e) {

            $this->flash->add('notice', 'user.manager.user.can.not.delete.disabled');

        }

    }

}