temp

app/Http/Controllers/Controller.php

@@ -6,8 +6,88 @@ use Illuminate\Foundation\Bus\DispatchesJobs;
 use Illuminate\Routing\Controller as BaseController;
 use Illuminate\Foundation\Validation\ValidatesRequests;
 use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
+use Session;
 
 class Controller extends BaseController
 {
     use AuthorizesRequests, DispatchesJobs, ValidatesRequests;
+
+     /**
+     * 防止表单重复提交的key前缀
+     * @var string
+     */
+    private $formResubmitPrefix = 'f_';
+
+    /**
+     * 将key加个前缀
+     * @param unknown $key
+     * @return string
+     */
+    private function formResubmitKeyProcess($key)
+    {
+        if(empty($key)){
+            //默认使用当前路由的uri为key
+            return $this->formResubmitPrefix.Route::current()->uri;
+        }else{
+            return $this->formResubmitPrefix.$key;
+        }
+    }
+
+    /**
+     * 在初始化表单前调用（如上面分步实现中的showRegistrationForm()方法中）
+     * @param unknown $key
+     */
+    protected function formInit($key = null)
+    {
+        $key = $this->formResubmitKeyProcess($key);
+        Session::put($key, time());
+    }
+
+    /**
+     * 在处理表单提交的方法中调用（如上面分步实现中的register()方法）
+     * @param string $message
+     * @param unknown $key
+     * @throws HttpException
+     */
+    protected function formSubmited(string $message = '请忽重复提交！', $key = null)
+    {
+        $key = $this->formResubmitKeyProcess($key);
+        if (Session::has($key)) {
+            Session::forget($key);
+        } else {
+           throw new HttpException(403, $message);
+        }
+    }  
+
+    /**
+     * 在处理表单提交的方法中调用（如上面分步实现中的register()方 法），该方法方便自定义重复提交时的提示页面，可以在子类中if判断一下，如果发生重复提交，响应自定义的界面
+     * @param string $message
+     * @param unknown $key
+     */
+    protected function formSubmitIsRepetition(string $message = '请勿重复提交！', $key = null)
+    {
+        $key = $this->formResubmitKeyProcess($key);
+        if (Session::has($key)) {
+            Session::forget($key);
+            return false;
+        } else {
+            return response()->view('errors.403', ['message'=>$message], 403);
+        }
+    }
+   /**
+     * 该方法用于ajax请求，返回的数据是数组
+     * @param string $message
+     * @param unknown $key
+     */
+    protected function formSubmitedForAjax(string $message = '请勿重复提交！', $key = null)
+    {
+        $key = $this->formResubmitKeyProcess($key);
+        if (Session::has($key)) {
+            Session::forget($key);
+            return false;
+        } else {
+            return ['result'=>'fail','message'=>$message];
+        }
+    }
+
 }