修复课程讨论区中邮件通知重复的问题

app/models/mailer.rb

@@ -107,6 +107,7 @@ class Mailer < ActionMailer::Base
      and (i.created_on between '#{date_from}' and '#{date_to}') order by i.created_on desc"
     @issues = Issue.find_by_sql(sql)
 
+
     # @bids 查询课程作业，包括老师发布的作业，以及user提交作业
     # @attachments查询课程课件更新
     @attachments ||= []
@@ -125,21 +126,29 @@ class Mailer < ActionMailer::Base
     # user 提交的作业
     # @homeworks = HomeworkAttach.where("user_id=#{user.id} and (created_at between '#{date_from}' and '#{date_to}')").order("created_at desc")
 
-    # 查询user在课程。项目中发布的讨论帖子
+    # 查询user在课程中发布的讨论帖子
-    messages = Message.find_by_sql("select me.* from messages me, boards b, members m where
+    course_mesages = Message.find_by_sql("select me.* from messages me, boards b, members m where
-     b.id = me.board_id and b.project_id = m.project_id and m.user_id = '#{user.id}' and (me.created_on between '#{date_from}' and '#{date_to}') order by created_on desc")
+     b.id = me.board_id and b.course_id = m.course_id
+     and b.course_id is not Null and m.user_id = '#{user.id}'
+     and (me.created_on between '#{date_from}' and '#{date_to}') order by created_on desc")
+    # 查询user在项目中发布的讨论帖子
+    project_messages = Message.find_by_sql("select me.* from messages me, boards b, members m where
+     b.id = me.board_id and b.project_id = m.project_id
+     and b.project_id != '-1' and m.user_id = '#{user.id}' and (me.created_on between '#{date_from}' and '#{date_to}') order by created_on desc")
     # messages = Message.find_by_sql("select DISTINCT * from messages where author_id = #{user.id} and (created_on between '#{date_from}' and '#{date_to}') order by created_on desc")
     @course_messages ||= []
     @project_messages ||= []
-    unless messages.first.nil?
+    unless course_mesages.first.nil?
-      messages.each do |msg|
+      course_mesages.each do |msg|
-        if msg.project
+        @course_messages << msg
-          @project_messages << msg
-        elsif msg.course
-          @course_messages << msg
-        end
       end
     end
+    unless project_messages.first.nil?
+      project_messages.each do |msg|
+        @project_messages << msg
+      end
+    end
+    # wiki
 
     #  查询user在课程中发布的通知，项目中发的新闻
     @course_news = (course_ids && !course_ids.empty?) ? News.find_by_sql("select DISTINCT n.*  from news n
@@ -157,7 +166,7 @@ class Mailer < ActionMailer::Base
     @forums = Forum.find_by_sql("select  DISTINCT * from forums where creator_id = #{user.id} and (created_at between '#{date_from}' and '#{date_to}') order by created_at desc")
     @memos = Memo.find_by_sql("select DISTINCT m.* from memos m, forums f where (m.author_id = #{user.id} or (m.forum_id = f.id and f.creator_id = #{user.id}))
                            and (m.created_at between '#{date_from}' and '#{date_to}')  order by m.created_at desc")
-
+    puts @attachments
     has_content = [@issues,@course_messages,@project_messages,@course_news,@project_news,
                    @course_journal_messages,@user_journal_messages,@forums,@memos,@attachments,@bids].any? {|o| !o.empty?}
     mylogger.debug "Sent activity mail : #{user.mail} - #{has_content}"