调整

app/controllers/homework_commons_controller.rb

@@ -90,8 +90,10 @@ class HomeworkCommonsController < ApplicationController
 
     if @homework_type == 4
       @homework_commons = @homework_commons.includes(:homework_detail_manual, :published_settings, :shixuns)
+    elsif @homework_type == 3
+        @homework_commons = @homework_commons.includes(:homework_detail_manual, :published_settings, :homework_detail_group)
     else
-      @homework_commons = @homework_commons.includes(:homework_detail_manual, :published_settings, :homework_detail_group)
+      @homework_commons = @homework_commons.includes(:homework_detail_manual, :published_settings)
     end
   end