socialforge/app/controllers/projects_controller.rb

# 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.
# Time 2015-01-28 16:34:21
# Author lizanle
# Description 封装代码,简化代码，格式化代码，
class ProjectsController < ApplicationController
  layout :select_project_layout
  before_filter :authorize1, :only => [:show]
  menu_item :overview, :only => :show
  menu_item :roadmap, :only => :roadmap
  menu_item :settings, :only => :settings
  menu_item :homework, :only => [:homework, :new_homework]
  menu_item :feedback, :only => :feedback
  menu_item :share, :only => :share

  before_filter :find_project, :except => [ :index, :search,:list, :new, :create, :copy, :statistics, :new_join, :course, :enterprise_course, :course_enterprise,:view_homework_attaches,:join_project]
  before_filter :authorize, :only => [:show, :settings, :edit, :sort_project_members, :update, :modules, :close, :reopen,:view_homework_attaches,:course]
  before_filter :authorize_global, :only => [:new, :create,:view_homework_attaches]
  before_filter :require_admin, :only => [ :copy, :archive, :unarchive, :destroy, :calendar]
  before_filter :file, :statistics #:watcherlist
  # 除非项目内人员，不可查看成员, TODO: 完了写报表里去
  # before_filter :memberAccess, only: :member

  # accept_rss_auth :index
  accept_api_auth :index, :show, :create, :update, :destroy

  after_filter :only => [:create, :edit, :update, :archive, :unarchive, :destroy] do |controller|
    if controller.request.post?
      controller.send :expire_action, :controller => 'welcome', :action => 'robots'
    end
  end

  helper :bids
  include BidsHelper
  helper :contests
  include ContestsHelper
  helper :sort
  include SortHelper
  helper :custom_fields
  include CustomFieldsHelper
  helper :issues
  helper :queries
  include QueriesHelper
  helper :repositories
  include RepositoriesHelper
  include ProjectsHelper
  helper :members
  helper :activities
  helper :documents
  helper :watchers
  # helper :watcherlist
  helper :words
  helper :project_score
  helper :user_score
  ### added by william
  include ActsAsTaggableOn::TagsHelper

  def index
    render_404
  end
  
  def course
    render_404
  end

  # Time 2015-01-29 11:19:11
  # Author lizanle
  # Description 项目搜索方法
  def search
    # 如果有名字，就按名字搜索，如果没有，就展示所有,用Karminari分页
    if params[:name].present?
      @project_pages = Project.project_entities.visible.like(params[:name]).page(params[:page]).per(10)
    else
      @project_pages =  Project.project_entities.visible.page(params[:page] ).per(10)
      @project_pages =  Project.project_entities.visible.page(params[:page] ).per(10)
    end
    @projects =   @project_pages.order("created_on desc")
    @limit = 10#per_page_option

    @project_count = Project.project_entities.visible.like(params[:name]).page(params[:page]).count
    @project_pages = Paginator.new @project_count, @limit, params['page']
    @name = params[:name]
    @type = 'projects'
    respond_to do |format|
      format.html {
        render :layout => 'base'
        scope = Project
        unless params[:closed]
          scope = scope.active
        end
      }
      # 需要到处atom使用的格式 （redmine自带）
      format.atom {
        projects = Project.visible.order('created_on DESC').limit(Setting.feeds_limit.to_i).all
        render_feed(projects, :title => "#{Setting.app_title}: #{l(:label_project_latest)}")
      }
    end 
  end

  # Time 2015-01-29 16:13:20
  # Author lizanle
  # Description 项目首页中用户反馈 方法
  def feedback
    @page = params[:page].to_i
    # Find the page of the requested reply
    @jours = @project.journals_for_messages.where('m_parent_id IS NULL').order('created_on DESC')
    limit =  10

    offset = @jours.count(:conditions => ["#{JournalsForMessage.table_name}.id > ?", params[:r].to_i])
    page = 1 + offset / limit
    if params[:r] && @page.nil?
      @page = @page < 0 ? 1 : @page
    end
    @page =  @page > page ? page : @page
    @jour = paginateHelper @jours,10
    @state = false
    respond_to do |format|
      format.html
      format.api
    end
  end

  def project_respond
    project_id = request.headers["Referer"].match((%r|/([0-9]{1,})/|))[1]
    parent_id = params[:reference_id]
    author_id = User.current.id
    reply_user_id = params[:reference_user_id]
    reply_id = params[:reference_message_id]
    content = params[:project_respond]
    options = {:user_id => author_id, 
              :m_parent_id => parent_id,
              :m_reply_id => reply_id,
              :reply_id => reply_user_id,
              :notes => content, 
              :is_readed => false}

    @jfm = Project.add_new_jour(nil, nil, project_id, options)
    @save_succ = @jfm.errors.empty?

    respond_to do |format|
      format.js
    end
  end

  def new
    if User.current.login?
      @issue_custom_fields = IssueCustomField.sorted.all
      @trackers = Tracker.sorted.all
      @project = Project.new
      @project.safe_attributes = params[:project]
      render :layout => 'new_base'
    else
      redirect_to signin_url
    end
  end
  
  def share
    @shares = @project.shares.reverse
    @base_courses_tag = @project.project_type
    respond_to do |format|
      format.html{render :layout => 'base_courses' if @base_courses_tag==1}
      format.api
    end
  end

  def create
    unless User.current.login?
      redirect_to signin_url
      return
    end
    @issue_custom_fields = IssueCustomField.sorted.all
    @trackers = Tracker.sorted.all
    @project = Project.new
    @project.safe_attributes = params[:project]
    @project.organization_id = params[:organization_id]
    @project.user_id = User.current.id
    @project.project_new_type = params[:project_new_type]
    params[:project][:is_public] ? @project.is_public = 1 : @project.is_public = 0
    if validate_parent_id && @project.save
      @project.set_allowed_parent!(params[:project]['parent_id']) if params[:project].has_key?('parent_id')
      # Add current user as a project member if he is not admin
      #unless User.current.admin?
      r = Role.givable.find_by_id(Setting.new_project_user_role_id.to_i) || Role.givable.first
      m = Member.new(:user => User.current, :roles => [r])
      project_info = ProjectInfo.new(:user_id => User.current.id, :project_id => @project.id)
      user_grades =  UserGrade.create(:user_id => User.current.id, :project_id => @project.id)
      Rails.logger.debug "UserGrade created: #{user_grades.to_json}"
      #if params[:project][:is_public] == '1'
        project_status = ProjectStatus.create(:project_id => @project.id, :watchers_count => 0, :changesets_count => 0, :project_type => @project.project_type,:grade => 0)
        Rails.logger.debug "ProjectStatus created: #{project_status.to_json}"
      #end
      @project.members << m
      @project.project_infos << project_info
      #end
      respond_to do |format|
        format.html {
          flash[:notice] = l(:notice_successful_create)
          if params[:continue]
            attrs = {:parent_id => @project.parent_id}.reject {|k,v| v.nil?}
            redirect_to new_project_url(attrs, :course => '0')
          else
            redirect_to settings_project_url(@project)
          end
        }
        format.api  { render :action => 'show', :status => :created, :location => url_for(:controller => 'projects', :action => 'show', :id => @project.id) }
        format.js
      end
    else
      respond_to do |format|
        format.html { render :action => 'new', :layout => 'new_base'}#Added by young
        format.api  { render_validation_errors(@project) }
      end
    end
  end

  def copy
    @issue_custom_fields = IssueCustomField.sorted.all
    @trackers = Tracker.sorted.all
    @source_project = Project.find(params[:id])
    if request.get?
      @project = Project.copy_from(@source_project)
      @project.identifier = Project.next_identifier if Setting.sequential_project_identifiers?
    else
      Mailer.with_deliveries(params[:notifications] == '1') do
        @project = Project.new
        @project.safe_attributes = params[:project]
        if validate_parent_id && @project.copy(@source_project, :only => params[:only])
          @project.set_allowed_parent!(params[:project]['parent_id']) if params[:project].has_key?('parent_id')
          flash[:notice] = l(:notice_successful_create)
          redirect_to settings_project_url(@project)
        elsif !@project.new_record?
          # Project was created
          # But some objects were not copied due to validation failures
          # (eg. issues from disabled trackers)
          # TODO: inform about that
          redirect_to settings_project_url(@project)
        end
      end
    end
  rescue ActiveRecord::RecordNotFound
  # source_project not found
    render_404
    end

  # Time 2015-01-29 10:42:00
  # Author lizanle
  # Description  项目动态展示方法，删除了不必要的代码
  def show
    # 更新消息为已读
    update_message_status(User.current, @project)
    if params[:jump] && redirect_to_project_menu_item(@project, params[:jump])
      return
    end
=begin
    cond = @project.project_condition(Setting.display_subprojects_issues?)
    has = {
      "show_issues" => true ,
      "show_files" => true,
      "show_documents" => true,
      "show_messages" => true,
      "show_news" => true,
      "show_bids" => true,
      "show_contests" => true,
      "show_wiki_edits"=>true,
      "show_journals_for_messages" => true
    }
    # 读取项目默认展示的动态时间天数
    @days = Setting.activity_days_default.to_i
    @date_to ||= Date.today + 1
    # 时间跨度不能太大，不然很慢，所以删掉了-1.years
    @date_from = @date_to - @days
    @with_subprojects = params[:with_subprojects].nil? ? Setting.display_subprojects_issues? : (params[:with_subprojects] == '1')
=end

    @author = params[:user_id].blank? ? nil : User.active.find(params[:user_id])
    # 决定显示所用用户或单个用户活动
=begin
    @activity = Redmine::Activity::Fetcher.new(User.current,
                                                   :project => @project,
                                                   :with_subprojects => @with_subprojects,
                                                   :author => @author)
    @activity.scope_select {|t| !has["show_#{t}"].nil?}
=end

    # 根据私密性，取出符合条件的所有数据
    if User.current.member_of?(@project) || User.current.admin?
      @events_pages = ForgeActivity.where("project_id = ? and forge_act_type != ?",@project, "Document" ).order("created_at desc").page(params['page'|| 1]).per(20);
      #events = @activity.events(@date_from, @date_to)
    else
      @events_pages = ForgeActivity.includes(:project).where("forge_activities.project_id = ? and projects.is_public
                                                    = ? and forge_act_type != ? ",@project,1, "Document").order("created_at desc")
                                                          .page(params['page'|| 1]).per(10);
     # @events = @activity.events(@date_from, @date_to, :is_public => 1)
    end

=begin
    @events_pages = Paginator.new events.count, 10, params['page']
    # 总的数据中取出某一页
    events = events.slice(@events_pages.offset,10)
    # 按天分组
    @events_by_day = events.group_by {|event| User.current.time_to_date(event.event_datetime)}
=end
    boards = @project.boards.includes(:last_message => :author).all
    @topic_count = @project.boards.count
    # 根据对应的请求，返回对应的数据
    respond_to do |format|
      format.html
      format.api
      format.js
    end
  end

  def settings
    # 修改查看消息状态
    applied_messages = ForgeMessage.where("user_id =? and project_id =? and forge_message_type =? and viewed =?", User.current.id, @project, "AppliedProject", 0)
    applied_messages.each do |applied_message|
      applied_message.update_attributes(:viewed => true)
    end
    # end
    @issue_custom_fields = IssueCustomField.sorted.all
    @issue_category ||= IssueCategory.new
    @member ||= @project.members.new
    @trackers = Tracker.sorted.all
    @wiki ||= @project.wiki
    @select_tab = params[:tab]

    # 处理从新建版本库返回来的错误信息
    if !params[:repository_error_message].to_s.blank?
      html = ""
      errors = params[:repository_error_message].flatten
      errors.each do |error|
        # 版本库路径为空的错误信息不予提示
        if(error!=l(:label_repository_path_not_null))
          html  << error << ";"
        end
      end
      if params[:repository] == "pswd_is_null"
        html  << l(:label_password_not_null)
      end
      flash.now[:error] = html if !html.to_s.blank?
    end
      scm = params[:repository_scm] || (Redmine::Scm::Base.all & Setting.enabled_scm).first
      @repository = Repository.factory(scm)
      @repository.is_default = @project.repository.nil?
      @repository.project = @project

  end

  # 项目邀请用户加入实现过程
  # 两种情况：1、系统外用户；2、系统内用户 (通过邮件判定)
  def send_mail_to_member
    # 该邮箱未注册过
    if !params[:mail].blank? && User.find_by_mail(params[:mail].to_s).nil?
      if !User.where("login =?", params[:mail]).first.nil?
        # 用户名唯一，用户修改邮箱，未修改用户名，用户名等同邮箱的情况，默认改用户已经注册
        user = User.find_by_login(params[:mail].to_s)
        if !user.member_of?(@project)
          # 如果已经邀请过该用户，则不重复发送
          if InviteList.where("project_id =? and mail =?", @project.id, params[:mail].to_s).first.nil?
            email = params[:mail]
            Mailer.request_member_to_project(email, @project, User.current).deliver
            flash[:notice] = l(:notice_email_sent, :value => email)
          else
            flash[:error] = l(:notice_email_invited)
          end
        else
          flash[:error] = l(:label_member_of_project, :value => email)
        end
      else
        email = params[:mail]
        first_name = params[:first_name]
        last_name = params[:last_name]
        gender = params[:gender]
        Mailer.send_invite_in_project(email, @project, User.current, first_name, last_name, gender).deliver
        @is_zhuce = false
        flash[:notice] = l(:notice_email_sent, :value => email)
      end

    # 邮箱地址已被注册
    elsif !User.find_by_mail(params[:mail].to_s).nil?
      user = User.find_by_mail(params[:mail].to_s)
      if !user.member_of?(@project)
        # 如果已经邀请过该用户，则不重复发送
        invite_list = InviteList.where("project_id =? and mail =?", @project.id, params[:mail].to_s).first
        if invite_list.nil?
          email = params[:mail]
          Mailer.request_member_to_project(email, @project, User.current).deliver
          flash[:notice] = l(:notice_email_sent, :value => email)
        else
          # 已经发送过了，则隔3小时才能再次发送
          if Time.now - invite_list.created_at > 10800
            email = params[:mail]
            Mailer.request_member_to_project(email, @project, User.current).deliver
            flash[:notice] = l(:notice_email_sent, :value => email)
          else
            flash[:error] = l(:notice_email_invited)
          end
        end
      else
        flash[:error] = l(:label_member_of_project, :value => email)
      end
    else
      @is_zhuce = true
    end
    respond_to do |format|
      format.html{redirect_to invite_members_by_mail_project_url(@project)}
    end
  end

  # 发送邮件邀请新用户页面对应方法
  def invite_members_by_mail
    if User.current.member_of?(@project) || User.current.admin?
      @inviter_lists = InviteList.where(project_id:@project.id).order("created_at desc")

      # @inviters = []
      # @waiters = []
      # unless @inviter_lists.blank?
      #   @inviter_lists.each do|inviter_list|
      #     unless inviter_list.user.nil?
      #       if inviter_list.user.member_of?(@project)
      #         @inviters << inviter_list.user
      #         @inviters_count = @inviters.size
      #       else
      #         @waiters << inviter_list.user
      #         @waiters_count = @waiters.size
      #       end
      #     end
      #   end
      # end
      @is_zhuce = false
      respond_to do |format|
        format.html
        format.js
      end
    else
      render_403
    end
  end

  # 邀请Trustie注册用户
  # def invite_members
  #   if User.current.member_of?(@project) || User.current.admin?
  #     @member ||= @project.members.new
  #       respond_to do |format|
  #       format.html
  #     end
  #   else
  #     render_403
  #   end
  # end

  def edit
  end

  # by young
  # include CoursesHelper
  def member
    # 消息"同意加入项目"
    if params[:message_id]
      message_invite(params[:message_id], params[:key])
    end
    update_message_status(User.current, @project)
    # params[:login]为邮箱邀请用户加入，主要功能：
    # 1、自动注册
    # 2、加入项目、创建角色
    # 3、用户得分
    if params[:mail]
      userid = Token.find_by_value(params[:token]).user_id
      user = User.find(userid)
      user.activate!
      Member.create(:role_ids => [4], :user_id => userid, :project_id => params[:id])
      UserGrade.create(:user_id => userid, :project_id => params[:id])
      token = Token.get_token_from_user(user, 'autologin')
      #user = User.try_to_autologin(token.value)
      if user
        start_user_session(user)
        user.save
        redirect_to project_member_path(params[:id])
        return
        # account_ project_member_path(params[:id])
        flash[:notice] = l(:label_mail_invite_success)
      end
    end
    # 私有项目非项目成员无法访问成员列表
    unless @project.is_public?
      return render_403 unless User.current.member_of?(@project)
    end
    ## 有角色参数的才是课程，没有的就是项目
    @render_file = 'project_member_list'
    # 判断是否课程
    if @project.project_type == Project::ProjectType_course
      @teachers= searchTeacherAndAssistant(@project)
      @canShowCode = isCourseTeacher(User.current.id)
      case params[:role]
      when '1'
        @subPage_title = l :label_teacher_list
        @members = searchTeacherAndAssistant(@project)
      when '2'
        @subPage_title = l :label_student_list
        @members = searchStudent(@project)
      else
        @subPage_title = ''
        @members = @project.member_principals.includes(:roles, :principal).all.sort
      end
    else
      if !@project.is_public? && !User.current.member_of?(@project) && !User.current.admin?
        render_403
      else
        roles = Role.find_all_givable
        @subPage_title = l :label_member_list
        @members = @project.member_principals.includes(:roles, :principal).joins("LEFT JOIN #{OptionNumber.table_name} ON #{OptionNumber.table_name}.user_id = #{Member.table_name}.user_id and #{OptionNumber.table_name}.score_type = 2 AND #{Member.table_name}.project_id = #{OptionNumber.table_name}.project_id").order("#{OptionNumber.table_name}.total_score DESC").all
        @applied_members = appied_project_members(@project, @members)
      end
    end
    @members = paginateHelper @members
  end

  def update_message_status(user, project)
    project_invite_messages = ForgeMessage.where("user_id =? and project_id =? and forge_message_type =?", user, project, "ProjectInvite")
    project_invite_messages.each do |project_invite_message|
      project_invite_message.update_attribute(:viewed, true)
    end
    #更新被加入项目消息的viewed字段
    join_project_messages = ForgeMessage.where("user_id =? and project_id =? and forge_message_type=?", user, project, "JoinProject")
    join_project_messages.each do |join_project|
      join_project.update_attribute(:viewed, true)
    end
    #更新被移出项目消息的viewed字段
    remove_project_messages = ForgeMessage.where("user_id =? and project_id =? and forge_message_type=?", user, project, "RemoveFromProject")
    remove_project_messages.update_all(:viewed => true)
  end

  def message_invite(message_id, key)
    forge_message = ForgeMessage.find(message_id)
    if key == forge_message.secret_key
      # 情况：用户收到邀请邮件还没看，但是管理员已经把该用户添加进项目
      if Member.where("user_id =? and project_id =?",forge_message.user_id, forge_message.project_id).first.nil?
        Member.create(:role_ids => [4], :user_id => forge_message.user_id, :project_id => forge_message.project_id)
        UserGrade.create(:user_id => forge_message.user_id, :project_id => forge_message.project_id)
      end
    end
  end

  #判断指定用户是否为课程教师
  def isCourseTeacher(id)
     result = false
    if  @teachers.find_by_user_id(id) != nil
      result = true
    end
    result
  end

  def sort_project_members project, members
    #userGrade = UserGrade.where(:project_id => project.id)
    users = UserGrade.where(:project_id => project.id).
            order('grade DESC').
            joins("LEFT JOIN users ON users.id = user_grades.id").
            select("DISTINCT user_grades.user_id")
    memberlist = []
    users.each do |user|
      members.each do |member|
        if member[:user_id] == user[:user_id]
          memberlist << member
        end
      end
    end
    memberlist
  end

  def appied_project_members (project, members)
    users = AppliedProject.where(:project_id => project.id)
    memberlist = []
    users.each do |user|
      members.each do |member|
        if member[:user_id] == user[:user_id]
          memberlist << member
        end
      end
    end
    memberlist
  end

  def file
  end

  def statistics

  end
  #end

  def update
    @project.safe_attributes = params[:project]
    @project.organization_id = params[:organization_id]
    params[:project][:is_public] ? @project.is_public = 1 : @project.is_public = 0
    params[:project][:hidden_repo] ? @project.hidden_repo = 1 : @project.hidden_repo = 0
    # 更新公开私有时同步gitlab公开私有
    unless @project.gpid.nil?
      g = Gitlab.client
      gproject = g.project(@project.gpid)
      params[:project][:is_public] ? g.edit_project(gproject.id, 20) : g.edit_project(gproject.id, 0)
    end
    # end
    if validate_parent_id && @project.save
      @project.set_allowed_parent!(params[:project]['parent_id']) if params[:project].has_key?('parent_id')
      if params[:project][:is_public] == '0'
        project_status = ProjectStatus.find_by_project_id(@project.id)
        project_status.destroy if project_status
      elsif params[:project][:is_public] == '1'
        project_status = ProjectStatus.create(:project_id => @project.id, :watchers_count => @project.watchers.count, :changesets_count => @project.changesets.count,:grade => 0, :project_type => @project.project_type)
      end

      respond_to do |format|
        format.html {
          flash[:notice] = l(:notice_successful_update)
          redirect_to settings_project_url(@project,:course => @project.project_type)
        }
        format.api  { render_api_ok }
      end
    else
      respond_to do |format|
        format.html {
          settings
          render :action => 'settings'
        }
        format.api  { render_validation_errors(@project) }
      end
    end
  end

  def modules
    @project.enabled_module_names = params[:enabled_module_names]
    flash[:notice] = l(:notice_successful_update)
    redirect_to settings_project_url(@project, :tab => 'modules')
  end

  def archive
    if request.post?
      unless @project.archive
        flash[:error] = l(:error_can_not_archive_project)
      end
    end
    redirect_to admin_projects_url(:status => params[:status])
  end

  def unarchive
    @project.unarchive if request.post? && !@project.active?
    redirect_to admin_projects_url(:status => params[:status])
  end

  def close
    @project.close
    redirect_to project_url(@project)
  end

  def reopen
    @project.reopen
    redirect_to project_url(@project)
  end

  # Delete @project
  def destroy
    @project_to_destroy = @project
    @project_to_destroy.destroy
    respond_to do |format|
      format.html { redirect_to admin_projects_url }
      format.api  { render_api_ok }
    end
    # hide project in layout
    @project = nil
  end

  def show_projects_score
    respond_to do |format|
      format.html { render :layout => "base_projects"}
      format.js
    end
  end
  
  def issue_score_index
       respond_to do |format|
         format.js
       end
  end
  
  def news_score_index
    
  end
  
  def file_score_index
    
  end
  
  def code_submit_score_index
    
  end
  
  def projects_topic_score_index
    
  end
# end

  before_filter :toggleCourse, only: [:finishcourse, :restartcourse]
  # 最好通过用户与项目的权限解决这种事情。还没写
  def finishcourse
    yesterday = Date.today.prev_day.to_time

    @course_prefs.endup_time = yesterday
    @save_flag = @course_prefs.save

    respond_to do |format|
      format.js
    end
  end

  def restartcourse
    day = Time.parse("3000-01-01")

    @course_prefs.endup_time = day
    @save_flag = @course_prefs.save

    respond_to do |format|
      format.js {
        render action:'finishcourse'
      }
    end
  end

  def exit_project
    @project = Project.find params[:id]
    if  User.current.login?
      members = Member.where(:user_id => User.current.id, :project_id=>params[:id]).first
      if  members != nil && members.roles.first.to_s != "Manager"
        members.destroy
      end
      respond_to do |format|
        format.js
      end
    end
  end

  #加入私有项目
  def join_project
    respond_to do |format|
      format.js
    end
  end

  #朋友圈、科研组、开发组之间的切换
  def change_project_type
    @project.project_new_type = params[:project_type]
    if @project.save
      message = @project.project_new_type
    else
      message = "0"
    end
    render :json => message
  end

  private

  def memberAccess
    # 如果是私有项目，项目成员不对外公开，公开项目成员列表对外公开。
    unless @project.is_public?
      render_403 unless User.current.member_of?(@project)
    end
  end

  def toggleCourse
    @course_prefs = Course.find_by_extra(@project.identifier)
    unless (@course_prefs.teacher == User.current || User.current.admin?)
      render_403
    end
  end


  def select_project_layout
    project = Project.find_by_id(params[:id])
    project ||= @project ||= @course ||= params[:course] ||= params[:project_type]
    (project.try(:project_type) == Project::ProjectType_project) ? 'base_projects' : 'base_courses'
  end

  # Validates parent_id param according to user's permissions
  # TODO: move it to Project model in a validation that depends on User.current
  def validate_parent_id
    return true if User.current.admin?
    parent_id = params[:project] && params[:project][:parent_id]
    if parent_id || @project.new_record?
      parent = parent_id.blank? ? nil : Project.find_by_id(parent_id.to_i)
      unless @project.allowed_parents.include?(parent)
        @project.errors.add :parent_id, :invalid
      return false
      end
    end
    true
  end

  def watcherlist
    unless @project.nil?
      if !@project.is_public? && !User.current.member_of?(@project) && !User.current.admin?
        render_403
      else
        @users -= watched.watcher_users if  @watched
      end
    end
  end

  #gcm
  def desc_sort_course_by_avtivity(activity_count,projects)
    return projects if activity_count.size<2
    (activity_count.size-2).downto(0) do |i|
      (0..i).each do |j|
        if activity_count[j]<activity_count[j+1]
          projects[j],projects[j+1]=projects[j+1],projects[j]
          activity_count[j],activity_count[j+1]=activity_count[j+1],activity_count[j]
        end
      end
    end
    return projects
  end
  #gcmend


end