laravel5如何创建service provider和facade
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
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);
}
}
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();
});
}
}
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'; }
}
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
<?php
return [
...
'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。