Bài 16: Kiến thức cơ bản về gate,policy

  

C:\xampp\htdocs Chạy cmd chạy lệnh composer create-project laravel/laravel gate

Chờ dowload xong mở dự án lên trong PhpStorm.

-    Vào Navicat tạo mơi một database gate

-    Vào phpStorm vào file .env

APP_NAME=Laravel
APP_ENV=local
APP_KEY=base64:gj4xflC+EyxtJ0SfrdjDsmdzyeQpPVo8e5SztO2drUM=
APP_DEBUG=true
APP_URL=http://localhost

LOG_CHANNEL=stack

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=gate
DB_USERNAME=root
DB_PASSWORD=

-    Vào terminal chạy 

composer require laravel/ui:^2.4

php artisan ui vue --auth

npm install && npm run dev

-    Vào AppServiceProvider.php

public function boot()
{
    Schema::defaultStringLength(191);
}

-    Vào terminal chạy lệnh : php artisan migrate

-    Lên trình duyệt tạo tài khoản:

-    Sau khi tạo xong :

-    Tạo tiếp 1 tài khoản 

-    Sau khi tạo xong :

-    Vào web.php

<?php

use Illuminate\Support\Facades\Route;

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get('/', function () {
    return view('welcome');
});

Auth::routes();

Route::get('/home', 'HomeController@index')->name('home');
Route::get('/admin', 'HomeController@admin')->name('admin');

-    Vào HomeController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class HomeController extends Controller
{
    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('auth');
    }

    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Contracts\Support\Renderable
     */
    public function index()
    {
        return view('home');
    }
    public function admin()
    {
        return view('admin');
    }
}

-     Vào resource => views => layouts => Tạo file admin.blade.php

<h2>Đây là page Admin</h2>

-    Vào AuthServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;
use Illuminate\Support\Facades\Gate;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * The policy mappings for the application.
     *
     * @var array
     */
    protected $policies = [
        // 'App\Model' => 'App\Policies\ModelPolicy',
    ];

    /**
     * Register any authentication / authorization services.
     *
     * @return void
     */
    public function boot()
    {
        $this->registerPolicies();
        Gate::define('is_admin', function ( $user) {
            return $user->is_admin;
        });

    }
}

-    Vào Navicat Vào bảng user

-    Vào Navicat :

-    Vào web.php

<?php

use Illuminate\Support\Facades\Route;

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get('/', function () {
    return view('welcome');
});

Auth::routes();

Route::get('/home', 'HomeController@index')->name('home');
Route::get('/admin', 'HomeController@admin')->name('admin');

-    Vào home.blade.php

@extends('layouts.app')

@section('content')
<div class="container">
    <div class="row justify-content-center">
        <div class="col-md-8">
            <div class="card">
                <div class="card-header">{{ __('Dashboard') }}</div>

                <div class="card-body">
                    @if (session('status'))
                        <div class="alert alert-success" role="alert">
                            {{ session('status') }}
                        </div>
                    @endif

                    {{ __('You are logged in!') }}
                    @can('is-admin')
                    <a href="{{route('admin')}}">Admin</a>
                        @endcan
                </div>
            </div>
        </div>
    </div>
</div>
@endsection

-    Vào HomeController.php

<?php

namespace App\Http\Controllers;


use Illuminate\Http\Request;
use Illuminate\Support\Facades\Gate;
class HomeController extends Controller
{
    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('auth');
    }

    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Contracts\Support\Renderable
     */
    public function index()
    {
        return view('home');
    }
    public function admin()
    {
        if(Gate::allows('is-admin'))
        {
            return view('admin');
        }
        else{
            abort(403);
        }

    }
}

-    Vào admin.blade.php

<h2>Đây là page Admin</h2>

-    Vào resoucre => views => tạo foder errors => tạo file 433.blade.php

<h2>Bạn không được phép truy cập</h2>

-    Vào AuthServiceProvider

<?php

namespace App\Providers;

use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;
use Illuminate\Support\Facades\Gate;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * The policy mappings for the application.
     *
     * @var array
     */
    protected $policies = [
        // 'App\Model' => 'App\Policies\ModelPolicy',
    ];

    /**
     * Register any authentication / authorization services.
     *
     * @return void
     */
    public function boot()
    {
        $this->registerPolicies();
        Gate::define('is-admin', function ($user) {
            return $user->is_admin;
        });

    }
}

Kiến thức cơ bản về policy

link:

https://www.youtube.com/watch?v=pbUzlzXvbGY&list=PL3V6a6RU5ogEAKIuGjfPEJ77FGmEAQXTT&index=59