每页显示20份作业

app/controllers/homework_common_controller.rb

@@ -8,7 +8,7 @@ class HomeworkCommonController < ApplicationController
     homeworks = @course.homework_commons
     @is_teacher = User.current.logged? && (User.current.admin? || User.current.allowed_to?(:as_teacher,@course))
     @is_student = User.current.logged? && (User.current.admin? || (User.current.member_of_course?(@course) && !@is_teacher))
-    @homeworks = paginateHelper homeworks,10
+    @homeworks = paginateHelper homeworks,20
     respond_to do |format|
       format.html
     end