Laravel 7 "Class 'App\Http\Controllers\Validator' not found" - php

Question

A few days ago I started learning laravel 7.
I bought a course on udemy.
I got to the part where the real registry system went and started to rewrite the code like in the video, but when I do it I get an error!
Error Message: "Class 'App\Http\Controllers\Validator' not found"
I've been trying to fix this for hours, and I'm not doing well
AccountController.php
<?php
namespace App\Http\Controllers;
class AccountController extends Controller
{
public function getcreate(){
return view('account.create');
}
public function postcreate(){
$validator = Validator::make(Input::all(),
array(
'email' => 'required|max:50|email|unique:users',
'username' => 'required|max:20|min:3|unique:users',
'password' => 'required|min:6',
'repeat_pass' => 'required|same:password'
));
if($validator->fails()){
die('ERROR');
}
else{
die('Cool');
}
}
}

Answer 1

you need to import validator namespace
use Illuminate\Support\Facades\Validator;
then instead of Input you could use request()->all() helper function
so it will be like this
namespace App\Http\Controllers;
use Illuminate\Support\Facades\Validator;
class AccountController extends Controller
{
public function getcreate(){
return view('account.create');
}
public function postcreate(){
$validator = Validator::make(request()->all(),
array(
'email' => 'required|max:50|email|unique:users',
'username' => 'required|max:20|min:3|unique:users',
'password' => 'required|min:6',
'repeat_pass' => 'required|same:password'
));
if($validator->fails()){
die('ERROR');
}
else{
die('Cool');
}
}
}

Answer 2

You will need to import the Validator class from it's correct namespace which is Illuminate\Support\Facades. So goes with Input class. Best way I can suggest is to add these in aliases section in config\app.php like below:
'aliases' => [
// other imports
'Validator' => Illuminate\Support\Facades\Validator::class,
'Input' => Illuminate\Support\Facades\Input::class,
]
Now, you can simply use them in your controller like below:
<?php
namespace App\Http\Controllers;
use Validator;
use Input;
class AccountController extends Controller
{
// rest of your code
}

Answer 3

You can use Validator namespace in your controller at top like:
use Validator;