Laravel Passport Register the user credentials were incorrect - laravel

Question

I set up Laravel Passport and currently I am trying to register user with a Post Route. I did create a RegisterController inside Controllers/Api/Auth.
Thus I created a clients table which looks excatly like a users table.
The client gets created if I call the route, but I do not get an access token nor a refresh token.
The route to my controller looks like this (routes/api):
Route::post('register', ['as' => 'register', 'uses' => 'Api\Auth\RegisterController#register']);
My Controller looks like this:
<?php
namespace App\Http\Controllers\Api\Auth;
use App\Client;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Route;
use Laravel\Passport\Client as PClient;
use Illuminate\Http\Request;
class RegisterController extends Controller
{
private $client;
public function __construct() {
$this->client = PClient::find(1);
}
public function register(Request $request)
{
$this->validate($request, [
'name' => 'required',
'email' => 'required|email|unique:users,email',
'password' => 'required|min:6|confirmed'
]);
$client_user = Client::create([
'name' => request('name'),
'email' => request('email'),
'password' => bcrypt(request('password'))
]);
$params = [
'grant_type' => 'password',
'client_id' => $this->client->id,
'client_secret' => $this->client->secret,
'username' => request('email'),
'password' => request('password'),
'scope' => '*'
];
$request->request->add($params);
$proxy = Request::create('oauth/token', 'POST');
return Route::dispatch($proxy);
}
}
This is my Client Model:
class Client extends Model implements AuthenticatableContract,
AuthorizableContract,
CanResetPasswordContract
{
use Authenticatable, Authorizable, CanResetPassword, HasApiTokens, Notifiable;
protected $table = 'clients';
protected $fillable = ['name', 'email', 'password'];
protected $hidden = ['password', 'remember_token'];
When I am trying to call it with Postman I get this error message:

Answer 1

I may be way off basis here but it looks as if you are creating your client with a password of "password" due to your bcrypt('password') call.
Should it not be bcrypt(request('password'))?
This would explain why your credentials are wrong in your request, because they are ; )

Answer 2

Ok I fixed it, the post route worked if I used the User Model instead of my Client model, so I guessed that there has to be something different.
After some research I have found out that one needs to add the model, in my case the client model to the providers array inside config/auth.php.
So first one needs to change the api guard like this:
'guards' => [
'web' => [
'driver' => 'session',
'provider' => 'users',
],
'api' => [
'driver' => 'passport',
'provider' => 'clients',
],
],
This way to api routes login and register only take action with my clients.
Now you need to a a new provider in this case a clients provider like this.
'providers' => [
'users' => [
'driver' => 'eloquent',
'model' => App\User::class,
],
'clients' => [
'driver' => 'eloquent',
'model' => App\Client::class
],
],
And voila I get an access token + refresh token if I call the route.