ldc-dam/app/Http/Controllers/BrandController.php

<?php

namespace App\Http\Controllers;

use App\Models\Marque;
use App\Http\Requests\Bo\UpdateBrandUserRequest;
use App\Models\User;
use Illuminate\Support\Facades\DB;

class BrandController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        /** @var \App\Models\User */
        $user = auth()->user();
        $user->authorizeRoles(config('roles.const.ADMIN'));

        $brands = Marque::query()->orderBy('libMarq')->get();
        return view('brands.index')->with([
            'brands' => $brands
        ]);
    }

    public function editUsers(Marque $brand)
    {
        /** @var \App\Models\User */
        $user = auth()->user();
        $user->authorizeRoles(config('roles.const.ADMIN'));

        $userModels = User::all();
        return view('brands.edit-relations')->with([
            'brand'      => $brand,
            'brands'      => Marque::all(),
            'userModels' => $userModels,
        ]);
    }

    public function updateUsers(UpdateBrandUserRequest $request, Marque $brand)
    {
        /** @var \App\Models\User */
        $user = auth()->user();
        $user->authorizeRoles(config('roles.const.ADMIN'));

        DB::transaction(function () use ($request, $brand) {
            if ($request->validated('users')) {
                $brand->users()->sync($request->validated('users'));
            }
            return redirect()->route('brands.editUsers', ['brand' => $brand])
                ->with('success', __('Les utilisateurs ont bien été mis à jour'));
        });
        return back()->with('error', __('Une erreur est survenue. Veuillez réessayer ultérieurement.'));
    }
}