# board_count = CourseActivity.where("user_id =? and course_id =? and course_act_type =?",s.student_id, course.id, "Message").count * 2
# 发帖数
board_count=Message.find_by_sql("select DISTINCT me.* from messages me, boards b where b.id = me.board_id and b.course_id = #{course.id} and b.project_id = '-1' and me.author_id = #{s.user_id} and me.parent_id is null;").count
# 回帖数
message_reply_count=Message.find_by_sql("select DISTINCT me.* from messages me, boards b where b.id = me.board_id and b.course_id = #{course.id} and b.project_id = '-1' and me.author_id = #{s.user_id} and me.parent_id is not null").count*1
# 新闻回复
common_reply_count=Comment.find_by_sql("select cm.* from comments cm, news n where cm.author_id = #{s.user_id} and n.course_id = #{course.id} and cm.commented_id = n.id and cm.commented_type ='News'").count*1
# 通知
common_count=News.find_by_sql("select n.* from news n where n.author_id = #{s.user_id} and n.course_id = #{course.id}").count*1
# attachment_count = CourseActivity.where("user_id =? and course_id =? and course_act_type =?", s.student_id, course.id, "Attachment").count * 5
# 附件数
attachment_count=Attachment.find_by_sql("SELECT * FROM `attachments` where container_id = #{course.id} and author_id = #{s.user_id} and container_type ='Course'").count
# 课程留言数
journal_count=JournalsForMessage.where("user_id =? and jour_id =? and jour_type =? ",s.user_id,course.id,"Course").count*1
# 作业留言
journal_homework_count=JournalsForMessage.find_by_sql("SELECT jfm.* FROM `journals_for_messages` jfm, homework_commons hc where hc.id = jfm.jour_id and hc.course_id =#{course.id} and jfm.user_id =#{s.user_id} and jfm.jour_type ='HomeworkCommon';").count*1
# journal_count = CourseActivity.where("user_id =? and course_id =? and course_act_type =?", s.student_id, course.id, "JournalsForMessage").count * 1
# journal_reply_count = JournalsForMessage.where("user_id =? and jour_id =? and jour_type =? and status =?", s.student_id, course.id, "Course",1).count * 1