Login, Register and Logout

UserController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use App\User;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Validator;
class UserController extends Controller
{
    public function register(Request $request)
    {
        $this->validator($request->all())->validate();

        $user = $this->create($request->all());

        $this->guard()->login($user);

        return response()->json(['user'=> $user,
                                  'message'=> 'registration successful'
                                ], 200);
    }
      /**
     * Get a validator for an incoming registration request.
     *
     * @param  array  $data
     * @return \Illuminate\Contracts\Validation\Validator
     */
    protected function validator(array $data)
    {
        return Validator::make($data, [
            'name' => ['required', 'string', 'max:255'],
            'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
            'password' => ['required', 'string', 'min:4', 'confirmed'],
        ]);
    }

    /**
     * Create a new user instance after a valid registration.
     *
     * @param  array  $data
     * @return \App\User
     */
    protected function create(array $data)
    {
        return User::create([
            'name' => $data['name'],
            'email' => $data['email'],
            'password' => Hash::make($data['password']),
        ]);
    }
    protected function guard()
    {
        return Auth::guard();
    }

    public function login(Request $request)
    {
        $credentials = $request->only('email', 'password');

        if (Auth::attempt($credentials)) {
            // Authentication passed...
            return response()->json(['message' => 'Login successful'], 200);
        }
    }

    public function logout()
    {
        Auth::logout();
        return response()->json(['message' => 'Logged Out'], 200);
    }
}