Request Data to Model Function - laravel

Question

I'm trying to find out why when I dd($request->all()) in the store method of my controller everything is correct, however when I send it to the model function register() its no where to be seen.
I'm not quite sure what I'm doing wrong.
<?php
namespace App\Http\Controllers;
use App\User;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\Http\Controllers\Controller;
class UsersController extends Controller
{
public function store(Request $request, User $user)
{
$this->authorize('delete', $user);
$this->validate($request, [
'firstName' => 'required|min:3',
'lastName' => 'required|min:3',
'displayName' => 'required|min:3',
'emailAddress' => 'required|email|unique:users,email',
'password' => 'required|min:3',
'role' => 'required|exists:roles,id'
]);
$userRegistered = $user->register(
new User($request->all())
);
if ($userRegistered) {
flash()->success('Success', 'The user has been successfully created!');
} else {
flash()->error('Error', 'The user could not be successfully created!');
}
return redirect()->to(route('users'));
}
}
<?php
namespace App;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Database\Eloquent\SoftDeletes;
class User extends Authenticatable
{
use SoftDeletes;
/**
* Fillable fields for a user.
*
* #var array
*/
protected $fillable = [
'first_name',
'last_name',
'display_name',
'email',
'password',
'role_id'
];
/**
* The attributes excluded from the model's JSON form.
*
* #var array
*/
protected $hidden = [
'password', 'remember_token',
];
public function register(User $user)
{
return $user->create([
'first_name' => $user->firstName,
'last_name' => $user->lastName,
'display_name' => $user->displayName,
'email' => $user->emailAdress,
'password' => $user->password,
'role_id' => $user->role
]);
}
}

Answer 1

You've mixed up the formatting of your variables between your request data and your User model.
According to your validation logic, the request data is coming is as camelCase. Yet, according to your $fillable array, the fields on your User model are snake_case. But, even then, in your register method, you're attempting to access the fields on the User model using camelCase.
You haven't given enough information for a definitive answer, but you need to fix the formatting of your variables. For example, change your request fields names from camelCase to snake_case, and make sure you access your fields on the model using snake_case.

Answer 2

You have to pass a list of attributes to "validate" method.
//...
$this->validate($request->all(), [
'firstName' => 'required|min:3',
'lastName' => 'required|min:3',
'displayName' => 'required|min:3',
'emailAddress' => 'required|email|unique:users,email',
'password' => 'required|min:3',
'role' => 'required|exists:roles,id'
]);
One more thing..check if you are using "web" middleware. (Kernel.php => MiddlewareGroups). Add that middleware to your route.