Contents

module Pseudocephalopod
  module SlugHistory
    extend ActiveSupport::Concern
    
    included do
      after_save :record_slug_changes
      after_destroy :remove_slug_history!
    end
   
    module InstanceMethods
      
      def previous_slugs
        Pseudocephalopod.previous_slugs_for(self)
      end
      
      def remove_slug_history!
        Pseudocephalopod.remove_slug_history_for(self)
      end
      
      protected
      
      def record_slug_changes
        slug_column = self.cached_slug_column
        return unless send(:"#{slug_column}_changed?")
        value = send(:"#{slug_column}_was")
        Pseudocephalopod.record_slug(self, value) if value.present?
      end
      
    end
    
    module ClassMethods
      
      def find_using_slug_history(slug, options = {})
        id = Pseudocephalopod.last_known_slug_id(self, slug)
        id.present? ? find_by_id(id, options) : nil
      end
      
    end
    
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
pseudocephalopod-0.3.1	lib/pseudocephalopod/slug_history.rb
pseudocephalopod-0.3.0	lib/pseudocephalopod/slug_history.rb
pseudocephalopod-0.2.5	lib/pseudocephalopod/slug_history.rb
pseudocephalopod-0.2.4	lib/pseudocephalopod/slug_history.rb
pseudocephalopod-0.2.3	lib/pseudocephalopod/slug_history.rb