discourse/app/models/tag.rb

47 lines
1.3 KiB
Ruby

class Tag < ActiveRecord::Base
validates :name, presence: true, uniqueness: true
has_many :tag_users # notification settings
has_many :topic_tags, dependent: :destroy
has_many :topics, through: :topic_tags
has_many :category_tags, dependent: :destroy
has_many :categories, through: :category_tags
has_many :tag_group_memberships
has_many :tag_groups, through: :tag_group_memberships
def self.tags_by_count_query(opts={})
q = TopicTag.joins(:tag, :topic).group("topic_tags.tag_id, tags.name").order('count_all DESC')
q = q.limit(opts[:limit]) if opts[:limit]
q
end
def self.category_tags_by_count_query(category, opts={})
tags_by_count_query(opts).where("tags.id in (select tag_id from category_tags where category_id = ?)", category.id)
.where("topics.category_id = ?", category.id)
end
def self.top_tags(limit_arg=nil)
self.tags_by_count_query(limit: limit_arg || SiteSetting.max_tags_in_filter_list)
.count
.map {|name, count| name}
end
end
# == Schema Information
#
# Table name: tags
#
# id :integer not null, primary key
# name :string not null
# topic_count :integer default(0), not null
# created_at :datetime
# updated_at :datetime
#
# Indexes
#
# index_tags_on_name (name) UNIQUE
#