course_order_ids="("+CourseActivity.find_by_sql("SELECT c.course_id, updated_at FROM(SELECT ca.course_id, MAX(ca.updated_at) AS updated_at FROM course_activities ca WHERE ca.course_id IN ("+@user.courses.visible.select('courses.id').map{|c|c.id}.join(',')+") GROUP BY ca.course_id) AS c ").map{|c|c.course_id}.join(",")+")"
course_order_ids="("+CourseActivity.find_by_sql("SELECT c.course_id, updated_at FROM(SELECT ca.course_id, MAX(ca.updated_at) AS updated_at FROM course_activities ca WHERE ca.course_id IN ("+@user.courses.visible.select('courses.id').map{|c|c.id}.join(',')+") GROUP BY ca.course_id) AS c ").map{|c|c.course_id}.join(",")+")"
@ -2869,7 +2869,11 @@ class UsersController < ApplicationController