实践课程首页分组问题

app/controllers/subjects_controller.rb

@@ -30,7 +30,7 @@ class SubjectsController < ApplicationController
       if search
         subjects = subjects.where("subjects.name like ?", "%#{search}%")
       end
-      @subjects = subjects.select("subjects.*, sum(shixuns.myshixuns_count) AS myshixun_member_count").group_by("subjects.id").order("myshixun_member_count DESC")
+      @subjects = subjects.select("subjects.*, sum(shixuns.myshixuns_count) AS myshixun_member_count").group("subjects.id").order("myshixun_member_count DESC")
     else
       # 我的路径
       if reorder == "mine"