130 lines
4.6 KiB
Ruby
130 lines
4.6 KiB
Ruby
class CategoryList
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include ActiveModel::Serialization
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attr_accessor :categories,
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:topic_users,
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:uncategorized,
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:draft,
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:draft_key,
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:draft_sequence
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def initialize(guardian=nil)
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@guardian = guardian || Guardian.new
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find_relevant_topics
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find_categories
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prune_empty
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add_uncategorized
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find_user_data
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end
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private
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# Retrieve a list of all the topics we'll need
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def find_relevant_topics
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@topics_by_category_id = {}
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category_featured_topics = CategoryFeaturedTopic.select([:category_id, :topic_id]).order(:rank)
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@topics_by_id = {}
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@all_topics = Topic.where(id: category_featured_topics.map(&:topic_id))
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@all_topics.each do |t|
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@topics_by_id[t.id] = t
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end
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category_featured_topics.each do |cft|
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@topics_by_category_id[cft.category_id] ||= []
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@topics_by_category_id[cft.category_id] << cft.topic_id
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end
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end
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# Find a list of all categories to associate the topics with
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def find_categories
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@categories = Category
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.includes(:featured_users)
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.secured(@guardian)
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.order('COALESCE(categories.topics_week, 0) DESC')
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.order('COALESCE(categories.topics_month, 0) DESC')
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.order('COALESCE(categories.topics_year, 0) DESC')
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@categories = @categories.to_a
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@categories.each do |c|
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topics_in_cat = @topics_by_category_id[c.id]
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if topics_in_cat.present?
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c.displayable_topics = []
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topics_in_cat.each do |topic_id|
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topic = @topics_by_id[topic_id]
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if topic.present?
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topic.category = c
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c.displayable_topics << topic
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end
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end
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end
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end
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end
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# Add the uncategorized "magic" category
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def add_uncategorized
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# Support for uncategorized topics
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uncategorized_topics = Topic
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.listable_topics
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.where(category_id: nil)
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.topic_list_order
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.limit(SiteSetting.category_featured_topics)
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if uncategorized_topics.present?
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totals = Topic.exec_sql("SELECT SUM(CASE WHEN created_at >= (CURRENT_TIMESTAMP - INTERVAL '1 WEEK') THEN 1 ELSE 0 END) as topics_week,
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SUM(CASE WHEN created_at >= (CURRENT_TIMESTAMP - INTERVAL '1 MONTH') THEN 1 ELSE 0 END) as topics_month,
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SUM(CASE WHEN created_at >= (CURRENT_TIMESTAMP - INTERVAL '1 YEAR') THEN 1 ELSE 0 END) as topics_year,
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COUNT(*) AS topic_count
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FROM topics
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WHERE topics.visible
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AND topics.deleted_at IS NULL
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AND topics.category_id IS NULL
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AND topics.archetype <> '#{Archetype.private_message}'").first
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uncategorized = Category.new({name: SiteSetting.uncategorized_name,
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slug: Slug.for(SiteSetting.uncategorized_name),
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color: SiteSetting.uncategorized_color,
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text_color: SiteSetting.uncategorized_text_color,
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featured_topics: uncategorized_topics}.merge(totals))
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# Find the appropriate place to insert it:
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insert_at = nil
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@categories.each_with_index do |c, idx|
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if (uncategorized.topics_week || 0) > (c.topics_week || 0)
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insert_at = idx
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break
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end
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end
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@categories.insert(insert_at || @categories.size, uncategorized)
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end
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if @all_topics.present? && uncategorized.present?
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uncategorized.displayable_topics = uncategorized_topics
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@all_topics << uncategorized_topics
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@all_topics.flatten!
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end
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end
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# Remove any empty topics unless we can create them (so we can see the controls)
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def prune_empty
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unless @guardian.can_create?(Category)
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# Remove categories with no featured topics unless we have the ability to edit one
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@categories.delete_if { |c| c.displayable_topics.blank? }
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end
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end
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# Get forum topic user records if appropriate
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def find_user_data
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if @guardian.current_user && @all_topics.present?
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topic_lookup = TopicUser.lookup_for(@guardian.current_user, @all_topics)
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# Attach some data for serialization to each topic
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@all_topics.each { |ft| ft.user_data = topic_lookup[ft.id] }
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end
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end
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end
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