Can't authenticate with created model on Laravel 5.1 - php

Question

In code with the comment "THIS IS NOT WORKING", I can't authorize.
I get user object and use Auth::login($user) but it doesn't work.
User in this moment creates in database.
public function login(Request $request)
{
if(Auth::check()) {
return redirect('home');
}
if($request->isMethod('post')) {
if($request->has('username') && $request->has('password')) {
$inputs = $request->except('_token');
if(!Auth::attempt(['username' => $inputs['username'], 'password' => $inputs['password']])) {
$user = $this->registerUser($inputs);
if($user) {
Auth::login($user);
}
}
}
return (Auth::check()) ? redirect()->route('home') : redirect()->back()->with('form_error', true);
}
return view('pages.auth.login');
}
User.php maybe here is something wrong?
namespace App\Models\system;
use Illuminate\Auth\Authenticatable;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Auth\Passwords\CanResetPassword;
use Illuminate\Foundation\Auth\Access\Authorizable;
use Illuminate\Contracts\Auth\Authenticatable as AuthenticatableContract;
use Illuminate\Contracts\Auth\Access\Authorizable as AuthorizableContract;
use Illuminate\Contracts\Auth\CanResetPassword as CanResetPasswordContract;
class User extends Model implements AuthenticatableContract,
AuthorizableContract,
CanResetPasswordContract
{
use Authenticatable, Authorizable, CanResetPassword;
protected $primaryKey = 'uid';
protected $table = 'eltk.dbo.system_users';
protected $guarded = [];
protected $hidden = ['password', 'remember_token'];
}

Answer 1

Let's start step by step.
Why did you create user on a method where you need to handle just login logic?
What's the name of your database? Is it eltk or dbo or what? Define it in config/database.php under 'database' or in .env and use in model just table name, not name of the whole table, is not necessary.
In login method you need something like this:
public function processLogin(Request $request){
if(Auth::attempt(['email' => $request->input('email'), 'password' => $request->input('password'), 'active' => 1])){
return redirect('/');
}else{
return redirect('login')->withMessage('User with this email and/or password does not exist or your account is not active.');
}
}
And btw, when you in if-else statement login user afterward you need to redirect him on some route.