laravel5如何创建service provider和facade-PHP Tutorial-php.cn

laravel5如何创建service provider和facade

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Release： 2016-06-20 12:33:34

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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();    }}

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它的作用就是规范返回的格式为

{    code: "0"    result: {    }}

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步骤

创建Service类

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);    }}

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这个AjaxResponse是具体的实现类，下面我们要为这个类做一个provider

创建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();        });    }}

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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

创建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'; }}

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修改配置文件

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',    ],];

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总结

laravel5中使用facade还是较为容易的，基本和4没啥区别。