Laravel学习笔记

服务提供，依赖自动注入

 php artisan make:provider FoodProvider  #创建自己的服务提供商
 class FoodServiceProvider extends ServiceProvider
 .....
 public function register() {
     $food = new \App\Services\FoodService("rice");
     $this->app->bind("food", function($app){
         return $food;
     });
     $this->app->instance("App\Services\FoodService", $food);
 }

 //App\Services\FoodService
 class FoodService {
     private $food;
     public function __construct($food){
         $this->food = $food;
     }

     public function start() {
         dump("Today's food is ".$this->food);
     }
 }

 //在config\app.php中注册自己的provider
 'providers'  =>  {
     App\Providers\FoodServiceProvider::class,
 }

 //然后可以使用这个服务了
 //route\web.php
 $food = App::make("food");
 $food->start();
 //IndexController
 public function __construct(\App\Services\FoodService $food) {
     $this->food = $food;
 }

 public function index(Request $request) {
     $this->food->start();
     resolve("food")->start();

     \App::make("food")->start();
     app()->make("food")->start();
     resolve("food")->start();
 }

使用Facade简化名称

 //\App\Facades\FoodFacade.php
 namespace App\Facades;
 use Illuminate\Support\Facades\Facade;

 class FoodFacade extends Facade {
     public static function getFacadeAccessor() {
         return "food";
     }
 }
 //config\app.php
 'alias' => {
     'Food' => App\Facades\FoodFacade::class,
 }

 //IndexController@index
 \Food::start();