add function for detach trigger in upload function

Westdc/File/Upload.php

@@ -17,6 +17,7 @@ class Upload extends AbstractEventManager implements ServiceManagerAwareInterfac
 
     protected $serviceManager;
     protected $defaultListener = false;
+    protected $returnInPreCheckTrigger = true;
 
     private $uploadPath = "";
     private $relativePath = "";
@@ -82,7 +83,7 @@ class Upload extends AbstractEventManager implements ServiceManagerAwareInterfac
 
         $results = $this->getEventManager()->trigger('upload.pre', $this, compact('file'));
 
-        if($this->defaultListener === true)
+        if($this->returnInPreCheckTrigger === true)
         {
             $cache_data = $results->last();
 
@@ -248,11 +249,23 @@ class Upload extends AbstractEventManager implements ServiceManagerAwareInterfac
     }
 
 
+    /**
+     * @param $params
+     */
     public function setParams($params)
     {
         $this->params = $params;
     }
 
+    /**
+     * 强制关闭文件上传前的钩子，默认是所有上传必须执行此钩子已避免上传文件不符合规格
+     * 除了后台中特殊的文件操作之外不建议关闭
+     */
+    public function forceDetachPreCheckTrigger()
+    {
+        $this->returnInPreCheckTrigger = false;
+    }
+
     /**
      * @return string
      */