Contents

module MakeTaggable
  class Tagging < ::ActiveRecord::Base #:nodoc:
    self.table_name = MakeTaggable.taggings_table

    DEFAULT_CONTEXT = "tags"
    belongs_to :tag, class_name: "::MakeTaggable::Tag", counter_cache: MakeTaggable.tags_counter
    belongs_to :taggable, polymorphic: true

    belongs_to :tagger, {polymorphic: true, optional: true}

    scope :owned_by, ->(owner) { where(tagger: owner) }
    scope :not_owned, -> { where(tagger_id: nil, tagger_type: nil) }

    scope :by_contexts, ->(contexts) { where(context: (contexts || DEFAULT_CONTEXT)) }
    scope :by_context, ->(context = DEFAULT_CONTEXT) { by_contexts(context.to_s) }

    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 MakeTaggable.remove_unused_tags && MakeTaggable.tags_counter && tag.reload.taggings_count.zero?
        tag.destroy
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
make_taggable-0.6.3	lib/make_taggable/tagging.rb