socialforge/app/models/news.rb

#encoding: utf-8
# Redmine - project management software
# Copyright (C) 2006-2013  Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

class News < ActiveRecord::Base
  require 'net/http'
  require 'json'
  include Redmine::SafeAttributes
  belongs_to :project,:touch => true
  include ApplicationHelper
  has_many_kindeditor_assets :assets, :dependent => :destroy
  #added by nwb
  belongs_to :course,:touch => true
  belongs_to :contest,:touch => true
  belongs_to :org_subfield, :touch => true
  belongs_to :author, :class_name => 'User', :foreign_key => 'author_id'
  has_many :comments, :as => :commented, :dependent => :destroy, :order => "created_on"
  # fq
  has_many :acts, :class_name => 'Activity', :as => :act, :dependent => :destroy
  # 被ForgeActivity虚拟关联
  has_many :forge_acts, :class_name => 'ForgeActivity',:as =>:forge_act ,:dependent => :destroy
  # 课程动态
  has_many :course_acts, :class_name => 'CourseActivity',:as =>:course_act ,:dependent => :destroy
  # 竞赛动态
  has_many :contest_acts, :class_name => 'ContestActivity',:as =>:contest_act ,:dependent => :destroy
  # end
  # 课程/项目/竞赛消息关联
  has_many :course_messages, :class_name =>'CourseMessage', :as => :course_message, :dependent => :destroy
  has_many :forge_messages, :class_name => 'ForgeMessage', :as => :forge_message, :dependent => :destroy
  has_many :contest_messages, :class_name =>'ContestMessage', :as => :contest_message, :dependent => :destroy
  #end

  has_many :praise_tread, as: :praise_tread_object, dependent: :destroy
  has_one :praise_tread_cache, as: :object, dependent: :destroy

  #转发表
  has_many :forwards, :as => :from, :dependent => :destroy

  has_many :ActivityNotifies,:as => :activity, :dependent => :destroy

  validates_presence_of :title, :description
  validates_length_of :title, :maximum => 60
  validates_length_of :summary, :maximum => 255
  # validates_length_of :description, :maximum => 10000

  acts_as_attachable :delete_permission => :manage_news
  acts_as_searchable :columns => ['title', 'summary', "#{table_name}.description"], :include => :project
  acts_as_event :url => Proc.new {|o| {:controller => 'news', :action => 'show', :id => o.id}}
  acts_as_activity_provider :find_options => {:include => [:project, :author]},
                            :author_key => :author_id
  #added by nwb
  #课程新闻独立于项目
  acts_as_activity_provider :type => 'course_news',
                            :find_options => {:include => [:course, :author]},
                            :author_key => :author_id
  acts_as_watchable

  after_create :act_as_course_activity, :add_author_as_watcher, :add_news_count, :act_as_student_score,:delay_news_wechat_send, :delay_news_send, :act_as_contest_message
  after_update :update_activity
  after_destroy :delete_kindeditor_assets, :decrease_news_count, :delete_org_activities, :down_course_score

  scope :visible, lambda {|*args|
    includes(:project).where(Project.allowed_to_condition(args.shift || User.current, :view_news, *args))
  }

  scope :course_visible, lambda {|*args|
    includes(:course).where(Course.allowed_to_condition(args.shift || User.current, :view_course_news, *args))
  }

  scope :contest_visible, lambda {|*args|
    includes(:contest).where(Contest.allowed_to_condition(args.shift || User.current, :view_contest_news, *args))
  }
  safe_attributes 'title', 'summary', 'description', 'sticky'

  #动态的更新
  def update_activity
    update_course_activity(self.class, self.id)
    update_user_activity(self.class, self.id)
    update_org_activity(self.class, self.id)
    update_forge_activity(self.class, self.id)
  end

  def visible?(user=User.current)
    !user.nil? && user.allowed_to?(:view_news, project)
  end

  # Returns true if the news can be commented by user
  def commentable?(user=User.current)
    user.allowed_to?(:comment_news, project)
  end

  def recipients
    project.users.select {|user| user.notify_about?(self)}.map(&:mail)
  end

  # returns latest news for projects visible by user
  def self.latest(user = User.current, count = 5)
    visible(user).includes([:author, :project]).order("#{News.table_name}.created_on DESC").limit(count).all
  end

  # 新闻的短描述信息
  def short_description(length = 255)
    description.gsub(/<\/?.*?>/,"").html_safe if description
    #description.gsub(/^(.{#{length}}[^\n\r]*).*$/m, '\1...').strip if description
    #description
  end

  def set_notify_id(notify_id)
    @notify_id= notify_id
  end
  def get_notify_id()
    return @notify_id
  end
  def set_notify_is_read(notify_is_read)
    @notify_is_read = notify_is_read
  end
  def get_notify_is_read()
    return @notify_is_read
  end

  private
  def add_news_count
    if self.project && !self.project.project_score.nil?
      count = self.project.project_score.news_num + 1
      self.project.project_score.update_attribute(:news_num, count)
    end
  end

  def decrease_news_count
    if self.project && !self.project.project_score.nil?
      count = self.project.project_score.news_num - 1
      self.project.project_score.update_attribute(:news_num, count < 0 ? 0 : count)
    end
  end

  def add_author_as_watcher
    Watcher.create(:watchable => self, :user => author)
  end

  # Time 2015-02-27 15:48:17
  # Author lizanle
  # Description 公用表中也要记录
  def act_as_forge_activity
    # 如果是project为空，那么是课程相关的，不需要保存
    if self.project
      self.forge_acts << ForgeActivity.new(:user_id => self.author_id, :project_id => self.project.id)
    end
  end

  #课程动态公共表记录
  def act_as_course_activity
    if self.course
      self.course_acts << CourseActivity.new(:user_id => self.author_id,:course_id => self.course_id)
    elsif self.contest
      self.contest_acts << ContestActivity.new(:user_id => self.author_id,:contest_id => self.contest_id)
    end
  end

  # 课程/项目通知 消息发送
  # 消息发送原则：除了消息的发布者，课程的其它成员都能收到消息提醒
  def act_as_system_message
    if self.course
      # self.course.members.each do |m|
      #   if m.user_id != self.author_id
      #     #self.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => self.course_id, :viewed => false)
      #     count = ShieldWechatMessage.where("container_type='User' and container_id=#{m.user_id} and shield_type='Course' and shield_id=#{self.course_id}").count
      #     if count == 0
      #       ws = WechatService.new
      #       content = self.title
      #       ws.class_notice m.user_id, "course_notice", self.id, "#{l(:label_new_notice_template)}", self.course.name, self.author.show_name, format_time(self.created_on), content, "点击查看通知详情"
      #     end
      #   end
      # end
    else
      if !self.project.nil?
        self.project.members.each do |m|
          if m.user_id != self.author_id
            self.forge_messages << ForgeMessage.new(:user_id => m.user_id, :project_id => self.project_id, :viewed => false)
          end
        end
      end
    end
  end

  def delay_news_wechat_send
    if self.course
      self.delay.news_wechat_message
    end
  end

  def news_wechat_message
    self.course.members.each do |m|
      if m.user_id != self.author_id
        #self.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => self.course_id, :viewed => false)
        count = ShieldWechatMessage.where("container_type='User' and container_id=#{m.user_id} and shield_type='Course' and shield_id=#{self.course_id}").count
        if count == 0
          ws = WechatService.new
          content = self.title
          ws.class_notice m.user_id, "course_notice", self.id, "#{l(:label_new_notice_template)}", self.course.name, self.author.show_name, format_time(self.created_on), content, "点击查看通知详情"
        end
      end
    end
  end

  def act_as_contest_message
    if self.contest_id
      self.contest.contest_members.each do | m|
        if m.user_id != self.author_id
          self.contest_messages << ContestMessage.new(:user_id => m.user_id, :contest_id => self.contest_id, :viewed => false)
        end
      end
    end
  end

  def delay_news_send
    if self.course

      vs = []
      self.course.members.each do | m|
        if m.user_id != self.author_id
          vs << {course_message_type:'News',course_message_id:self.id, :user_id => m.user_id,
                 :course_id => self.course_id, :viewed => false}

          #delayed_job卡住的原因是一次执行的条数太多，导致超时。
          #现在把每次只执行不超过30条，就不会超了。
          if vs.size >= 30
            self.delay.contain_news_message(vs)
            vs.clear
          end
        end
      end

      unless vs.empty?
        self.delay.contain_news_message(vs)
      end

    elsif self.contest_id
      vs = []
      self.contest.contest_members.each do | m|
        if m.user_id != self.author_id
          vs << {contest_message_type:'Contest',contest_message_id:self.id, :user_id => m.user_id,
                 :contest_id => self.contest_id, :viewed => false}

          if vs.size >= 30
            self.delay.contain_contst_news_message(vs)
            vs.clear
          end
        end
      end

      unless vs.empty?
        self.delay.contain_contst_news_message(vs)
      end
    end
  end

  def contain_news_message(vs)
    CourseMessage.create(vs)
  end

  def contain_contst_news_message(vs)
    ContestMessage.create(vs)
  end

  # Time 2015-03-31 13:50:54
  # Author lizanle
  # Description 删除news后删除对应的资源
  def delete_kindeditor_assets
    delete_kindeditor_assets_from_disk self.id,OwnerTypeHelper::NEWS
  end

  def send_mail
    # Mailer.run.news_added(self) if Setting.notified_events.include?('news_added')
  end

  def delete_org_activities
    OrgActivity.where("container_type='OrgSubfield' and org_act_type='News' and org_act_id=?", self.id).destroy_all
  end

  # 新增新闻统计数增加
  def act_as_student_score
    if self.course
      course_member_score(self.course.id, self.author_id, "News")
    end
  end

  # 删除新闻统计数减少
  def down_course_score
    if self.course
      down_course_score_num(self.course.id, self.author_id, "News")
    end
  end

end