socialforge/app/api/mobile/entities/activity.rb

# encoding: utf-8
module Mobile
  module Entities
    class Activity <Grape::Entity
      include ApplicationHelper
      include ApiHelper
      def self.act_expose(f)
        expose f do |ac,opt|
          if ac.is_a?(Hash) && ac.key?(f)
            ac[f]
          elsif ac.is_a?(::UserActivity)
            if ac.respond_to?(f)
              ac.send(f)
            else
              case f
                when :user_act
                  if ac.act_type == "Project"
                    ac unless ac.nil?
                  else
                    ac.act unless ac.nil? || ac.act.nil?
                  end
                when :reply_count
                  # if ac.act_type == "HomeworkCommon"
                  #   ac.nil? || ac.act.nil? ? 0 : ac.act.journals_for_messages.count
                  # elsif ac.act_type == "News"
                  #   ac.nil? || ac.act.nil? ? 0 : ac.act.comments.count
                  # elsif ac.act_type == "Message" || ac.act_type == "BlogComment" || ac.act_type == "JournalsForMessage"
                  #   ac.nil? || ac.act.nil? ? 0 : ac.act.children.count
                  # elsif ac.act_type == "Issue"
                  #   ac.nil? || ac.act.nil? ? 0 : ac.act.journals.where("notes is not null and notes != ''").count
                  # end
                  all_comments = []
                  ac.nil? || ac.act.nil? ? 0 : get_all_children(all_comments, ac.act).count
                when :subject
                  if ac.act_type == "HomeworkCommon"
                    ac.act.name unless ac.nil? || ac.act.nil?
                  elsif ac.act_type == "News" || ac.act_type == "BlogComment"
                    ac.act.title unless ac.nil? || ac.act.nil?
                  elsif ac.act_type == "Message" || ac.act_type == "Issue"
                    ac.act.subject unless ac.nil? || ac.act.nil?
                  elsif ac.act_type == "JournalsForMessage"
                    ac.act.private == 0 ? "留言" : "私信" unless ac.nil? || ac.act.nil?
                  end
                when :description
                  if ac.act_type == "HomeworkCommon" || ac.act_type == "Issue" || ac.act_type == "News"
                    strip_html(ac.act.description) unless ac.nil? || ac.act.nil?
                  elsif ac.act_type == "Message" || ac.act_type == "BlogComment"
                    strip_html(ac.act.content) unless ac.nil? || ac.act.nil?
                  elsif ac.act_type == "JournalsForMessage"
                    strip_html(ac.act.notes) unless ac.nil? || ac.act.nil?
                  end
                when :latest_update
                  time_from_now ac.updated_at unless ac.nil?
                when :praise_count
                  if ac.act_type == "HomeworkCommon" || ac.act_type == "News" || ac.act_type == "Message" || ac.act_type == "BlogComment" || ac.act_type == "JournalsForMessage" || ac.act_type == "Issue"
                    ac.nil? || ac.act.nil? ? 0 : get_activity_praise_num(ac.act)
                  end
                #when :homework_common_detail_manual
                #   if ac.act_type == "HomeworkCommon"
                #     ac.act.homework_detail_manual unless ac.nil? || ac.act.nil? || ac.act.homework_detail_manual.nil?
                #   end
                when :course_project_name
                  if ac.container_type == "Course"
                    name = (get_course(ac.container_id)).name
                    name
                  elsif ac.container_type == "Project"
                    name = (get_project(ac.container_id)).name
                    name
                  elsif ac.container_type == "Blog"
                    "发表博客"
                  end
                when :activity_type_name
                  if ac.container_type == "Course"
                    case ac.act_type
                      when "HomeworkCommon"
                        "课程作业"
                      when "News"
                        "课程通知"
                      when "Message"
                        "课程问答区"
                      when "Poll"
                        "课程问卷"
                      when "Course"
                        "课程"
                    end
                  elsif ac.container_type == "Project"
                    case ac.act_type
                      when "Issue"
                        "项目问题"
                      when "Message"
                        "项目讨论区"
                      when "Project"
                        "项目"
                    end
                  end
              end
            end
          end
        end
      end
      expose :act_type    #缺陷/作业/讨论区/留言等类型
      expose :act_id
      expose :id
      expose :container_type     #课程/项目/博客/个人
      expose :author, using: Mobile::Entities::User do |a, opt|    #用户信息
        if a.is_a? ::UserActivity
          if a.act_type == "Project"
            get_user(get_project(a.act_id).user_id)
          elsif !a.act.nil?
            if a.act_type == 'Issue' || a.act_type == 'News' || a.act_type == 'Message' || a.act_type == 'BlogComment'
            a.act.author
            elsif a.act_type == 'HomeworkCommon' || a.act_type == 'Poll' || a.act_type == 'JournalsForMessage'
              a.act.user
            elsif a.act_type == 'Course'
              a.act.teacher
            end
          end
        end
      end
      expose :homework_common_detail , using: Mobile::Entities::Whomework do |a, opt|  #作业相关信息
        if a.act_type == "HomeworkCommon"
          a.act
        end
      end
      expose :issue_detail, using: Mobile::Entities::Issue do |a, opt| #缺陷信息
        if a.act_type == "Issue"
          a.act
        end
      end
      act_expose :reply_count    #回复数
      act_expose :praise_count   #点赞数
      #act_expose :user_act     #某个动态
      act_expose :subject      #标题
      act_expose :description  #描述
      act_expose :latest_update #最新更新时间
      act_expose :course_project_name    #课程/项目名字
      act_expose :activity_type_name     #课程问答区/项目缺陷等
      expose :has_praise , if: lambda { |instance, options| options[:user] } do |instance, options|
        if instance.act_type == "HomeworkCommon" || instance.act_type == "News" || instance.act_type == "Message" || instance.act_type == "BlogComment" || instance.act_type == "JournalsForMessage" || instance.act_type == "Issue"
          has_praise = false
          current_user = options[:user]
          obj = PraiseTread.where("praise_tread_object_id=? and praise_tread_object_type=? and user_id=?",instance.act_id,instance.act_type.to_s,current_user.id)
          has_praise = obj.empty? ? false : true
          has_praise
        end
      end
    end
  end
end