socialforge/app/controllers/stores_controller.rb

# Trustie - education management software
# Copyright (C) 2013-2014
class StoresController < ApplicationController
  layout 'base_stores'
  # menu_item :overview
  # menu_item :roadmap, :only => :roadmap
  # menu_item :settings, :only => :settings

  # include ActsAsTaggableOn::TagsHelper
  LIMIT = 20 unless const_defined?(:LIMIT)
  def index
  	# @projects_attach = project_classification(0).take(LIMIT)
  	# @courses_attach = project_classification(1).take(LIMIT)
  	@projects_attach = Attachment.includes(:project).where("projects.project_type=?", 0).
  						reorder("#{Attachment.table_name}.downloads DESC").
  						limit(LIMIT)

    @courses_attach = Attachment.includes(:project).where("projects.project_type=?", 1).
     					reorder("#{Attachment.table_name}.downloads DESC").
     					limit(LIMIT)
    @homeworks_attach = Attachment.where("container_type = 'HomeworkAttach'").
    					reorder("created_on DESC").
    					limit(LIMIT)
    @memos_attach = Attachment.where("container_type = 'Memo'").
    					reorder("created_on DESC").
    					limit(LIMIT)
    @attach_array = Array.new
    @attach_array.push(@projects_attach, @courses_attach, @homeworks_attach, @memos_attach)
  end
  
  private

  def project_classification project_type=0
  	pro_attach   = Attachment.joins("LEFT JOIN projects ON attachments.container_id = projects.id").
  					where("projects.project_type=#{project_type}").
  					reorder("downloads DESC").
  					limit(LIMIT)
	doc_attach   = join_tools_project "documents", project_type
	issue_attach = join_tools_project "issues", project_type
	mess_attach  = []#join_tools_project "messages", project_type
	news_attach  = join_tools_project "news", project_type
	vers_attach  = join_tools_project "versions", project_type
	wiki_attach  = []#join_tools_project "wiki_pages", project_type

  	tmp = pro_attach+doc_attach+issue_attach+mess_attach+news_attach+vers_attach+wiki_attach
  	tmp.sort { |a, b| b.downloads <=> a.downloads }
  end
  def join_tools_project tableName, project_type=0
  	Attachment.joins(str_join_table(tableName)).
  		where("projects.project_type=#{project_type}").
  		reorder('downloads DESC').
  		limit(LIMIT)
  end

  def str_join_table tableName
  	str = "LEFT JOIN #{tableName} ON attachments.container_id = #{tableName}.id 
  		LEFT JOIN projects ON #{tableName}.project_id = projects.id"
  	str
  end
end