laravel5.5 middleware接收参数的写法

叁歲伎倆 2022-05-13 00:52 104阅读 0赞

*   *   *  场景
         *  原因

### 场景 ###

*  在做api token的时候 配置api路由的时候 middleware需要指定api guard ‘middleware’ => \[‘auth:api’\]; 之前只是知道需要这样做 但是不知道理由;
 *  今天在laravel官网找到了答案

### 原因 ###

*  `这样做是为了传递参数'api guard' ;指定auth middleware指定的guard; 因为它是默认web(文件config/auth.php)`
 *  \\Illuminate\\Auth\\Middleware\\Authenticate::class handle函数

/** * Handle an incoming request. * * @param \Illuminate\Http\Request $request * @param \Closure $next * @param string[] ...$guards * @return mixed * * @throws \Illuminate\Auth\AuthenticationException */
        public function handle($request, Closure $next, ...$guards) { 
            $this->authenticate($guards);
    
            return $next($request);
        }

> \[官网资料\]([https://laravel.com/docs/5.5/middleware\#middleware-parameters][https_laravel.com_docs_5.5_middleware_middleware-parameters]
> 
> > Middleware can also receive additional parameters. For example, if your application needs to verify that the authenticated user has a given “role” before performing a given action, you could create a CheckRole middleware that receives a role name as an additional argument.  
> > Additional middleware parameters will be passed to the middleware after the $next argument:
> > 
> > Middleware parameters may be specified when defining the route by separating the middleware name and parameters with a :. Multiple parameters should be delimited by commas:

<?php
    
    namespace App\Http\Middleware;
    
    use Closure;
    
    class CheckRole { 
        /** * Handle the incoming request. * * @param \Illuminate\Http\Request $request * @param \Closure $next * @param string $role * @return mixed */
        public function handle($request, Closure $next, $role) { 
            if (! $request->user()->hasRole($role)) {
                // Redirect...
            }
    
            return $next($request);
        }
    
    }
    
    Route::put('post/{id}', function ($id) { 
        //
    })->middleware('role:editor');

[https_laravel.com_docs_5.5_middleware_middleware-parameters]: https://laravel.com/docs/5.5/middleware#middleware-parameters