用户搜索bug

app/services/users_service.rb

@@ -245,10 +245,10 @@ class UsersService
         "show_changesets" => true
     }
     scope = User.logged.status(status)
+    search_by = params[:search_by] ? params[:search_by] : "0"
     if params[:is_search_assitant].nil?
       #modify by yutao 2015/5/18 没有params[:user_id]参数时去掉"id not in (?)"条件(bug:#2270) start
       #say by yutao: params[:user_id]这个是指谁发起的搜索么? 如果是 这个值貌似应该从session获取 怪怪的赶脚-_-!
-      search_by = params[:search_by] ? params[:search_by] : "0"
       if params[:name].present?
         if !params[:user_id].nil?
           watcher = User.watched_by(params[:user_id])