class CategoryFeaturedTopic < ActiveRecord::Base belongs_to :category belongs_to :topic # Populates the category featured topics def self.feature_topics transaction do current = {} CategoryFeaturedTopic.select(:topic_id, :category_id).order(:rank).each do |f| (current[f.category_id] ||= []) << f.topic_id end Category.select(:id, :topic_id).all.each do |c| feature_topics_for(c, current[c.id] || []) CategoryFeaturedUser.feature_users_in(c.id) end end end def self.feature_topics_for(c, existing=nil) return if c.blank? query = TopicQuery.new(self.fake_admin, per_page: SiteSetting.category_featured_topics, except_topic_ids: [c.topic_id], visible: true, no_definitions: true) results = query.list_category(c).topic_ids return if results == existing CategoryFeaturedTopic.transaction do CategoryFeaturedTopic.delete_all(category_id: c.id) if results results.each_with_index do |topic_id, idx| c.category_featured_topics.create(topic_id: topic_id, rank: idx) end end end end private def self.fake_admin # fake an admin admin = User.new admin.admin = true admin.id = -1 admin end end # == Schema Information # # Table name: category_featured_topics # # category_id :integer not null # topic_id :integer not null # created_at :datetime # updated_at :datetime # rank :integer default(0), not null # id :integer not null, primary key # # Indexes # # cat_featured_threads (category_id,topic_id) UNIQUE # index_category_featured_topics_on_category_id_and_rank (category_id,rank) #