Laravel Facades

Facades提供了一個“靜態”的介面到應用程式的服務容器中可用的類。 Laravel 的“facades”作為“靜態代理”在服務容器底層類，提供了一個簡潔， 富有表現的語法，同時保持比傳統的靜態方法更有可測試性和靈活性。

如何創建Facade

• 第1步 - 創建PHP類檔
• 第2步 - 綁定類到服務提供者
• 第3步- 註冊服務提供者到 Config\app.php 作為供應者
• 第4步- 創建類，這個類是擴展lluminate\Support\Facades\Facade
• 第5步- 註冊第4點到 Config\app.php 作為別名

Facade類參考

Facade	類	服務容器綁定
App	Illuminate\Foundation\Application	app
Artisan	Illuminate\Contracts\Console\Kernel	artisan
Auth	Illuminate\Auth\AuthManager	auth
Auth (Instance)	Illuminate\Auth\Guard
Blade	Illuminate\View\Compilers\BladeCompiler	blade.compiler
Bus	Illuminate\Contracts\Bus\Dispatcher
Cache	Illuminate\Cache\Repository	cache
Config	Illuminate\Config\Repository	config
Cookie	Illuminate\Cookie\CookieJar	cookie
Crypt	Illuminate\Encryption\Encrypter	encrypter
DB	Illuminate\Database\DatabaseManager	db
DB (Instance)	Illuminate\Database\Connection
Event	Illuminate\Events\Dispatcher	events
File	Illuminate\Filesystem\Filesystem	files
Gate	Illuminate\Contracts\Auth\Access\Gate
Hash	Illuminate\Contracts\Hashing\Hasher	hash
Input	Illuminate\Http\Request	request
Lang	Illuminate\Translation\Translator	translator
Log	Illuminate\Log\Writer	log
Mail	Illuminate\Mail\Mailer	mailer
Password	Illuminate\Auth\Passwords\PasswordBroker	auth.password
Queue	Illuminate\Queue\QueueManager	queue
Queue (Instance)	Illuminate\Queue\QueueInterface
Queue (Base Class)	Illuminate\Queue\Queue
Redirect	Illuminate\Routing\Redirector	redirect
Redis	Illuminate\Redis\Database	redis
Request	Illuminate\Http\Request	request
Response	Illuminate\Contracts\Routing\ResponseFactory
Route	Illuminate\Routing\Router	router
Schema	Illuminate\Database\Schema\Blueprint
Session	Illuminate\Session\SessionManager	session
Session (Instance)	Illuminate\Session\Store
Storage	Illuminate\Contracts\Filesystem\Factory	filesystem
URL	Illuminate\Routing\UrlGenerator	url
Validator	Illuminate\Validation\Factory	validator
Validator (Instance)	Illuminate\Validation\Validator
View	Illuminate\View\Factory	view
View (Instance)	Illuminate\View\View

示例

php artisan make:provider TestFacadesServiceProvider

App/Test/TestFacades.php

<?php
namespace App\Test;

class TestFacades{
   public function testingFacades(){
      echo "Testing the Facades in Laravel.";
   }
}

App/Test/Facades/TestFacades.php

<?php
namespace app\Test\Facades;
use Illuminate\Support\Facades\Facade;

class TestFacades extends Facade{
   protected static function getFacadeAccessor() { return 'test'; }
}

App/Providers/TestFacadesServiceProvider.php

<?php
namespace App\Providers;
use App;
use Illuminate\Support\ServiceProvider;

class TestFacadesServiceProvider extends ServiceProvider {
   public function boot() {
      //
   }
   public function register() {
      App::bind('test',function() {
         return new \App\Test\TestFacades;
      });
   }
}

config/app.php

config/app.php

app/Http/routes.php

Route::get('/facadeex', function(){
   return TestFacades::testingFacades();
});

http://localhost:8000/facadeex

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