Contents

module ActsAsTaggableOn
  class Tagging < ::ActiveRecord::Base #:nodoc:
    attr_accessible :tag,
                    :tag_id,
                    :context,
                    :taggable,
                    :taggable_type,
                    :taggable_id,
                    :tagger,
                    :tagger_type,
                    :tagger_id if defined?(ActiveModel::MassAssignmentSecurity)
    belongs_to :tag, :class_name => 'ActsAsTaggableOn::Tag' , :counter_cache => true
    belongs_to :taggable, :polymorphic => true
    belongs_to :tagger,   :polymorphic => true

    validates_presence_of :context
    validates_presence_of :tag_id

    validates_uniqueness_of :tag_id, :scope => [:taggable_type, :taggable_id, :context, :tagger_id, :tagger_type]

    after_destroy :remove_unused_tags

    private

    def remove_unused_tags
      if ActsAsTaggableOn.remove_unused_tags
        # TODO: use taggings_count in release 4.0.0
        if tag.taggings.count.zero?
          tag.destroy
        end
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
acts-as-taggable-on-3.1.1	lib/acts_as_taggable_on/tagging.rb