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PHP Laravel 系列 - (15) 如何建立Middleware

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1. 建立middleware

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php artisan make:middleware CheckDirtyWord

路徑

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app/http/Middleware

底下會多出一個CheckDirtyWord.php

image-20220110132249158

2. 撰寫dirtyword檢查

打開 CheckDirtyWord.php 我們會看到有一個function 名稱為handle，試著改成以下的程式碼：

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public function handle(Request $request, Closure $next)
{
    $dirtyWords = [
        'apple',
        'orange'
    ];
    
    $parameters = $request->all();

    foreach($parameters as $key => $value){
        if($key == 'content'){
            foreach($dirtyWords as $dirtyWord){
                if(strpos($value,$dirtyWord) !== false){
                    return response('dirty!',400);
                }
            }
        }
    }
 
    return $next($request);
    
}

3. kernel.php 加上middleware

在$routeMiddleware加上一個，名稱可以自己取：

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'check.kite' => \App\Http\Middleware\CheckDirtyWord::class,

如下：

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protected $routeMiddleware = [
    'auth' => \App\Http\Middleware\Authenticate::class,
    'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
    'cache.headers' => \Illuminate\Http\Middleware\SetCacheHeaders::class,
    'can' => \Illuminate\Auth\Middleware\Authorize::class,
    'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
    'password.confirm' => \Illuminate\Auth\Middleware\RequirePassword::class,
    'signed' => \Illuminate\Routing\Middleware\ValidateSignature::class,
    'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
    'verified' => \Illuminate\Auth\Middleware\EnsureEmailIsVerified::class,
    'check.kite' => \App\Http\Middleware\CheckDirtyWord::class,
];

4. 修改router

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Route::group(['middleware' =>'check.kite'],function(){
    Route::resource('main','MainController');    
});

5. POSTMAN 測試

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http://127.0.0.1:8000/main

image-20220110133608558