Simple Redis Hash <=> Ruby Object Interface

simpleredis.rb

require 'redis'
require 'active_support'
require 'active_support/core_ext'

module RedisHash

  delegate :redis, :redis_base, to: :class

  def self.included(base)
    base.extend ClassMethods
    base.send :attr_accessor, :id
    base.send :mattr_accessor, :redis, :redis_base
    base.redis ||= Redis.new
    base.redis_base = base.name
  end

  module ClassMethods

    def count
      redis.get("#{redis_base}:count").to_i
    end

    def find(id)
      raw_hash = redis.hgetall("#{redis_base}:#{id}")
      unless raw_hash.empty?
        found = new(raw_hash)
        found.id = id
        found
      end
    end

    def create(args={})
      new(args).save
    end
    
  end

  def save
    redis.hmset("#{redis_base}:#{@id = current_id}", *@args)
    redis.incr("#{redis_base}:count")
    self
  end

  def update(args)
    @args.merge!(args)
    save
  end

  def destroy
    redis.del(redis_base)
  end

  # Easy mass assignment
  def initialize(args={})
    (@args = args).each do |key, value|
      self.class.send(:define_method, key){ @args[key] }
      self.class.send(:define_method, "#{key}="){|new_val| @args[key] = new_val } 
    end
  end

  private

  def current_id
    @id || self.class.count
  end

end