socialforge/db/migrate/20150829024549_course_messages.rb

# encoding: UTF-8
class CourseMessages < ActiveRecord::Migration
  def up
    Course.all.each do |course|
      transaction do
        put course.id
        course.course_messages << CourseMessage.new(:user_id => course.tea_id,:course_id => course.id)
        # 作业
        course.homework_commons.each do |homework_common|
          homework_common.course.members.each do |m|
            if m.user_id != homework_common.user_id
              if m.created_on < homework_common.created_at
                homework_common.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => course.id, :viewed => true)
              end
            end
          end
        end

        # 通知
        course.news.each do |new|
          new.course.members.each do |m|
            if m.user_id != new.author_id
              if m.created_on < new.created_on  # 在成员加入课程之后
                new.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => course.id, :viewed => true)
              end
            end
          end
        end

        # 通知的回复
        course.news.each do |new|
          if new.comments
            new.comments.each do |comment|
              if comment.author_id != comment.commented.author_id
                comment.course_messages << CourseMessage.new(:user_id => comment.commented.author_id, :course_id => course.id, :viewed => true)
              end
            end
          end
        end

        # 讨论区
        if course.boards.first
          course.boards.first.messages.each do |message|
            if message.parent_id.nil?   # 主贴
              message.course.members.each do |m|
                if message.author.allowed_to?(:as_teacher, message.course) &&  m.user_id != message.author_id   # 老师 自己的帖子不给自己发送消息
                  if m.created_on < message.created_on
                    message.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => course.id, :viewed => true)
                  end
                end
              end
            else    # 回帖
              message.course.members.each do |m|
                if m.user_id ==  Message.find(message.parent_id).author_id  && m.user_id != message.author_id  # 只针对主贴回复，回复自己的帖子不发消息
                  if m.created_on < message.created_on
                    message.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => course.id, :viewed => true)
                  end
                end
              end
            end
          end
        end

        #  问卷
        Poll.where("polls_type = 'Course' and polls_group_id = #{course.id}").each do |poll|
          if poll.polls_status == 2 #问卷是发布状态
            Course.find(poll.polls_group_id).members.each do |m|
              if m.user_id != poll.user_id
                if m.created_on < poll.created_at
                  poll.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => course.id, :viewed => true)
                end
              end
            end
          elsif poll.polls_status == 1 #问卷是新建状态
            poll.course_messages.destroy_all
          end
        end

        # 作品评阅
        # course.homework_commons.each do |homework_common|
        #   if homework_common.student_works
        #     homework_common.student_works.each do |student_work|
        #       if student_work.student_works_scores
        #         student_work.student_works_scores.each do |student_works_score|
        #           receiver = student_works_score.student_work.user
        #           if student_works_score.created_at == student_works_score.updated_at
        #             if student_works_score.comment.nil?
        #               student_works_score.course_messages << CourseMessage.new(:user_id => receiver.id, :course_id => course.id,
        #                                                         :viewed => true, :content => "作业评分：#{student_works_score.score}", :status=> true)
        #             else
        #               student_works_score.course_messages << CourseMessage.new(:user_id => receiver.id, :course_id => course.id,
        #                                                         :viewed => true, :content => "作业评分：#{student_works_score.score}&nbsp;&nbsp;&nbsp; 评语：#{student_works_score.comment}", :status=> true)
        #             end
        #           else # 更新
        #             if student_works_score.comment.nil?
        #               student_works_score.course_messages << CourseMessage.new(:user_id => receiver.id, :course_id => course.id,
        #                                                         :viewed => true, :content => "作业评分：#{student_works_score.score}", :status=> true)
        #             else
        #               student_works_score.course_messages << CourseMessage.new(:user_id => receiver.id, :course_id => course.id,
        #                                                         :viewed => true, :content => "作业评分：#{student_works_score.score}&nbsp;&nbsp;&nbsp; 评语：#{student_works_score.comment}", :status=> true)
        #             end
        #           end
        #         end
        #       end
        #     end
        #   end
        # end
        # 作品讨论

      end
    end
  end

  def down
  end
end