回复报错

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("select subjects.*, sum(shixuns.myshixuns_count) AS myshixun_member_count").group("subjects.id").order("myshixun_member_count DESC")
+      @subjects = subjects.group("subjects.id").order("myshixun_member_count DESC").select("subjects.*, sum(shixuns.myshixuns_count) AS myshixun_member_count")
     else
       # 我的路径
       if reorder == "mine"

app/views/discusses/reply.json.jbuilder

@@ -1,4 +1,4 @@
 json.discuss do
-  json.(@discuss, :id, :created_at, :position, :shixun_id, :hidden, :reward, :praise_count)
+  json.(@discuss, :id, :created_at, :position, :hidden, :reward, :praise_count)
   json.content content_safe(@discuss.content)
 end