require_dependency 'avatar_lookup' class TopicList include ActiveModel::Serialization cattr_accessor :preloaded_custom_fields self.preloaded_custom_fields = Set.new def self.on_preload(&blk) (@preload ||= Set.new) << blk end def self.cancel_preload(&blk) if @preload @preload.delete blk if @preload.length == 0 @preload = nil end end end def self.preload(topics, object) if @preload @preload.each{|preload| preload.call(topics, object)} end end attr_accessor :more_topics_url, :prev_topics_url, :draft, :draft_key, :draft_sequence, :filter, :for_period, :per_page, :tags, :current_user def initialize(filter, current_user, topics, opts=nil) @filter = filter @current_user = current_user @topics_input = topics @opts = opts || {} if @opts[:category] @category = Category.find_by(id: @opts[:category_id]) end preloaded_custom_fields << DiscourseTagging::TAGS_FIELD_NAME if SiteSetting.tagging_enabled end def tags opts = @category ? { category: @category } : {} opts[:guardian] = Guardian.new(@current_user) Tag.top_tags(opts) end def preload_key if @category "topic_list_#{@category.url.sub(/^\//, '')}/l/#{@filter}" else "topic_list_#{@filter}" end end # Lazy initialization def topics @topics ||= load_topics end def load_topics @topics = @topics_input # Attach some data for serialization to each topic @topic_lookup = TopicUser.lookup_for(@current_user, @topics) if @current_user post_action_type = if @current_user if @opts[:filter].present? if @opts[:filter] == "bookmarked" PostActionType.types[:bookmark] elsif @opts[:filter] == "liked" PostActionType.types[:like] end end end # Include bookmarks if you have bookmarked topics if @current_user && !post_action_type post_action_type = PostActionType.types[:bookmark] if @topic_lookup.any?{|_,tu| tu && tu.bookmarked} end # Data for bookmarks or likes post_action_lookup = PostAction.lookup_for(@current_user, @topics, post_action_type) if post_action_type # Create a lookup for all the user ids we need user_ids = [] @topics.each do |ft| user_ids << ft.user_id << ft.last_post_user_id << ft.featured_user_ids << ft.allowed_user_ids end avatar_lookup = AvatarLookup.new(user_ids) @topics.each do |ft| ft.user_data = @topic_lookup[ft.id] if @topic_lookup.present? if ft.user_data && post_action_lookup && actions = post_action_lookup[ft.id] ft.user_data.post_action_data = {post_action_type => actions} end ft.posters = ft.posters_summary(avatar_lookup: avatar_lookup) ft.participants = ft.participants_summary(avatar_lookup: avatar_lookup, user: @current_user) ft.topic_list = self end if preloaded_custom_fields.present? Topic.preload_custom_fields(@topics, preloaded_custom_fields) end TopicList.preload(@topics, self) @topics end def attributes {'more_topics_url' => page} end end