/**
  * Task done. 
  */
 public function taskDone(Request $request)
 {
     $user_task = UserTask::find($request->task);
     if ($user_task->user_id == $request->id) {
         if ($request->hasFile('src')) {
             $filename = substr(md5(time()), 0, 20) . '.' . $request->file('src')->getClientOriginalExtension();
             $request->file('src')->move(base_path() . '/public/upload', $filename);
         } else {
             $filename = "";
         }
         $user_task->content = $request->content;
         $user_task->src = $filename;
         $user_task->status = 3;
         $user_task->close_date = date('Y-m-d');
         $user_task->save();
     }
 }