laravel5创建一个facade,可以将某个service注册个门面,这样,使用的时候就不需要麻烦地use 了。文章用一个例子说明怎么创建service provider和 facade。
目标我希望我创建一个AjaxResponse的facade,这样能直接在controller中这样使用:
class MechanicController extends Controller { public function getIndex() { \AjaxResponse::success(); }}
它的作用就是规范返回的格式为
{ code: "0" result: { }}步骤
在app/Services文件夹中创建类
<?php namespace App\Services;class AjaxResponse { protected function ajaxResponse($code, $message, $data = null) { $out = [ 'code' => $code, 'message' => $message, ]; if ($data !== null) { $out['result'] = $data; } return response()->json($out); } public function success($data = null) { $code = ResultCode::Success; return $this->ajaxResponse(0, '', $data); } public function fail($message, $extra = []) { return $this->ajaxResponse(1, $message, $extra); }}
这个AjaxResponse是具体的实现类,下面我们要为这个类做一个provider
在app/Providers文件夹中创建类
<?php namespace App\Providers;use Illuminate\Support\ServiceProvider;class AjaxResponseServiceProvider extends ServiceProvider { public function register() { $this->app->singleton('AjaxResponseService', function () { return new \App\Services\AjaxResponse(); }); }}
这里我们在register的时候定义了这个Service名字为AjaxResponseService
下面我们再定义一个门脸facade
在app/Facades文件夹中创建类
<?php namespace App\Facades;use Illuminate\Support\Facades\Facade;class AjaxResponseFacade extends Facade { protected static function getFacadeAccessor() { return 'AjaxResponseService'; }}
好了,下面我们只需要到app.php中挂载上这两个东东就可以了
<?phpreturn [ ... 'providers' => [ ... 'App\Providers\RouteServiceProvider', 'App\Providers\AjaxResponseServiceProvider', ], 'aliases' => [ ... 'Validator' => 'Illuminate\Support\Facades\Validator', 'View' => 'Illuminate\Support\Facades\View', 'AjaxResponse' => 'App\Facades\AjaxResponseFacade', ],];总结
laravel5中使用facade还是较为容易的,基本和4没啥区别。