统计

app/models/course.rb

@@ -196,7 +196,7 @@ class Course < ApplicationRecord
   end
 
   def all_course_module_types
-    %w[activity announcement online_learning shixun_homework common_homework group_homework exercise attachment course_group graduation poll board]
+    %w[activity announcement online_learning shixun_homework common_homework group_homework exercise attachment course_group graduation poll board statistics]
   end
 
   def get_course_module_by_type(type)
@@ -386,6 +386,7 @@ class Course < ApplicationRecord
     when 'attachment'      then '资源'
     when 'board'           then '讨论'
     when 'course_group'    then '分班'
+    when 'statistics'      then '统计'
     else ''
     end
   end
@@ -404,6 +405,7 @@ class Course < ApplicationRecord
     when 'attachment'      then 10
     when 'board'           then 11
     when 'course_group'    then 12
+    when 'statistics'      then 13
     else 100
     end
   end

db/migrate/20191029011040_add_statistics_to_course_module.rb

@@ -0,0 +1,7 @@
+class AddStatisticsToCourseModule < ActiveRecord::Migration[5.2]
+  def change
+    Course.includes(:course_modules).all.each do |course|
+      CourseModule.create!(course_id: course.id, module_type: "statistics", hidden:0, module_name: "统计", position: course.course_modules.pluck(:position).max + 1)
+    end
+  end
+end