pg_json_store.rb

module ActiveRecord
  module PgJsonStore
    extend ActiveSupport::Concern

    module ClassMethods

      #
      # Store (JSON) using Postgres
      # JSON data type.
      # 
      # Inspired by: http://api.rubyonrails.org/classes/ActiveRecord/Store.html
      #
      #  Example:
      #
      #   class User < ActiveRecord::Base
      #     include ActiveRecord::PgJsonStore
      #     
      #     pg_json_store :address, accessors: [:street1, 
      #       :street2, :city, :state, :postal, :country]
      #   end
      # 
      #   User.new(city: "San Diego", state: "CA")
      #   => #<User address: {"city"=>"San Diego", "state"=>"CA"}>
      #  
      def pg_json_store(column, options = {})
        column    = column.to_sym
        accessors = options.delete(:accessors)

        store_accessor(column, accessors) if accessors
      end
    
    end

  end
end