How to add user_id to login parameter in Laravel?

Question

Below is some method in a trait AuthenticatesUsers where Illuminate\Foundation\Auth, Laravel.

   ...
    protected function validateLogin(Request $request)
    {
        $this->validate($request, [
            $this->username() => 'required|string',
            'password' => 'required|string',
        ]);
    }

   ...

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

Originally, my goal is to make another login form with user_id and password in mobile device, so this will check Auth() and if success, it will work some method and automatically logout after then. could you tell me detailed advice?

Additional question.

as Jaskaran Singh's advice I added it also as below.

protected function authenticated(Request $request, $user)
{
    if($request->Inn == 'Inn') {
        return redirect()->route('mobiles_start', ['Inn' => 'Inn']);
    }

    elseif($request->Ut == 'Ut') {
        return redirect()->route('mobiles_destroy', ['Ut' => 'Ut']);
    }

    return view('welcome');
}

but if login failed, then it is redirected back to the /login page instead of expected view page that pre defined in the route(mobiles_start and mobiles_destroy) above. How could I do?

Answer 1

in app/Http/Controllers/Auth/LoginController.php add the following functions, this will override the default functions in AuthenticatesUsers trait.

add username() function

public function username()
{
    if(request('id')){
        return 'id'; // if request contains id then return it
    }
    return 'email'; // else return email
}

add validateLogin() function

protected function validateLogin(Request $request)
{
    $this->validate($request, [
        $this->username() => 'required', //remove |string
        'password' => 'required|string',
    ]);
}

that's it.