lelong/app/Http/Controllers/Auth/LoginController.php

<?php

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use App\Models\User;
use App\Providers\RouteServiceProvider;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Http\Request;

class LoginController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles authenticating users for the application and
    | redirecting them to your home screen. The controller uses a trait
    | to conveniently provide its functionality to your applications.
    |
    */

    use AuthenticatesUsers;

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = RouteServiceProvider::HOME;

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('guest')->except('logout');
    }

    public function username()
    {
        return 'username';
    }

    public function redirectLogin()
    {
        return redirect()->route('login');
    }

    /**
     * In local env, accept any password for an existing username.
     */
    protected function attemptLogin(Request $request)
    {
        if (app()->environment('local')) {
            $user = User::where($this->username(), $request->input($this->username()))->first();

            if ($user) {
                $this->guard()->login($user, $request->filled('remember'));

                return true;
            }

            return false;
        }

        return $this->guard()->attempt(
            $this->credentials($request),
            $request->filled('remember')
        );
    }
}