Laravel: Using multiple columns for authentication - laravel

Question

I have a Laravel 6 application.
In a typical application, the user would just specify their email, where the email is unique.
However, in my application, I have 2 columns in the User model that is used to authenticate users.
app_id
email
unique(app_id, email)
So in order to login, we need to pass both an app_id and an email, along with the password. The same email could be used across different app_ids.
How would I achieve this?

Answer 1

The default login actions provided by Auth::routes() are the following:
Route::get('login', 'Auth\LoginController#showLoginForm')->name('login');
Route::post('login', 'Auth\LoginController#login');
This is the default login function, part of the AuthenticatesUsers trait used by the LoginController:
/**
* Handle a login request to the application.
*
* #param \Illuminate\Http\Request $request
* #return \Illuminate\Http\RedirectResponse|\Illuminate\Http\Response|\Illuminate\Http\JsonResponse
*
* #throws \Illuminate\Validation\ValidationException
*/
public function login(Request $request)
{
$this->validateLogin($request);
// If the class is using the ThrottlesLogins trait, we can automatically throttle
// the login attempts for this application. We'll key this by the username and
// the IP address of the client making these requests into this application.
if (method_exists($this, 'hasTooManyLoginAttempts') &&
$this->hasTooManyLoginAttempts($request)) {
$this->fireLockoutEvent($request);
return $this->sendLockoutResponse($request);
}
if ($this->attemptLogin($request)) {
return $this->sendLoginResponse($request);
}
// If the login attempt was unsuccessful we will increment the number of attempts
// to login and redirect the user back to the login form. Of course, when this
// user surpasses their maximum number of attempts they will get locked out.
$this->incrementLoginAttempts($request);
return $this->sendFailedLoginResponse($request);
}
There are a few ways to approach this.
Option 1: Override login function in LoginController
# app/Http/Controllers/Auth/LoginController.php
public function login(Request $request)
{
// add more stuff like validation, return the view you want, etc.
// This is barebones
auth()->attempt($request->only(['app_id', 'login', 'password']);
}
Option 2: Override both the validateLogin and the credentials functions in LoginController
# app/Http/Controllers/Auth/LoginController.php
protected function validateLogin(Request $request)
{
$request->validate([
'app_id' => 'required|string',
'email' => 'required|string',
'password' => 'required|string',
]);
}
/**
* Get the needed authorization credentials from the request.
*
* #param \Illuminate\Http\Request $request
* #return array
*/
protected function credentials(Request $request)
{
return $request->only('app_id', 'email', 'password');
}