couchrest model slug

gistfile1.rb

require 'stringex'

module CouchRest
  module Model
    module Slug
      extend ActiveSupport::Concern
      
      included do
        before_save :generate_slug
        
        property :slug
        view_by :slug
        view_by :slug_without_count, 
          :map => "function(doc) {
            if ((doc['model'] == '#{self.name}') && (doc['slug'] != null)) {
              var slug = doc['slug'].match(/^(\\S+?)(?:-\\d+)?$/);
              emit(slug[1], null);
            }
          }",
          :reduce => "_count"
        
        cattr_accessor :slugged_props
      end
      
      module InstanceMethods
        def to_param
          self.send :slug
        end
        
        private
        def generate_slug
          if new_record? || slugged_props_changed?
            slug = self.slugged_props.collect{ |prop| read_attribute(prop) }.join(", ").to_url
            slug = self.class.generate_count_for_slug(slug)
            self.slug = slug
          end
        end

        def slugged_props_changed?
          self.slugged_props.any? { |p| self.send("#{p}_changed?") }
        end
      end
      
      module ClassMethods
        def slug(*props)
          self.slugged_props = props.map(&:to_s)
        end
        
        def find(slug)
          self.by_slug(:key => slug).first || super(slug)
        end

        def generate_count_for_slug(slug_without_count)
          hash = self.by_slug_without_count(:reduce => true, :group => true, :key => slug_without_count)["rows"].try(:first)
          hash.nil? ? slug_without_count : "#{slug_without_count}-#{hash['value']}"
        end
      end
      
    end
  end
end

gistfile1.txt

require 'stringex'

module CouchRest
  module Model
    module Slug
      extend ActiveSupport::Concern
      
      included do
        before_save :generate_slug
        
        property :slug
        view_by :slug
        view_by :slug_without_count, 
          :map => "function(doc) {
            if ((doc['model'] == '#{self.name}') && (doc['slug'] != null)) {
              var slug = doc['slug'].match(/^(\\S+?)(?:-\\d+)?$/);
              emit(slug[1], null);
            }
          }",
          :reduce => "_count"
        
        cattr_accessor :slugged_props
      end
      
      module InstanceMethods
        def to_param
          self.send :slug
        end
        
        private
        def generate_slug
          if new_record? || slugged_props_changed?
            slug = self.slugged_props.collect{ |prop| read_attribute(prop) }.join(", ").to_url
            slug = self.class.generate_count_for_slug(slug)
            self.slug = slug
          end
        end

        def slugged_props_changed?
          self.slugged_props.any? { |p| self.send("#{p}_changed?") }
        end
      end
      
      module ClassMethods
        def slug(*props)
          self.slugged_props = props.map(&:to_s)
        end
        
        def find(slug)
          self.by_slug(:key => slug).first || super(slug)
        end

        def generate_count_for_slug(slug_without_count)
          hash = self.by_slug_without_count(:reduce => true, :group => true, :key => slug_without_count)["rows"].try(:first)
          hash.nil? ? slug_without_count : "#{slug_without_count}-#{hash['value']}"
        end
      end
      
    end
  end
end