rest.rb

require 'pastiche'
require 'pastiche/serializer'
require 'restclient'

module Pastiche
  class RESTStore
    def initialize(uri, opts={})
      @uri = uri
    end

    def supports_expiration?
      false
    end

    def supports_enumeration?
      true
    end

    def [](key)
      RestClient.get("#{@uri}/#{key}")
    end

    def []=(key, value)
      RestClient.post("#{@uri}/#{key}", value)
    end

    def store(key, value, opts={})
      RestClient.post("#{@uri}/#{key}", value)
    end

    def key?(key)
      return false unless key
      RestClient.head("#{@uri}/#{key}")
    end
  end
end

Pastiche.setup(:test,
  Pastiche::Chain.new do
    use Pastiche::Serializer, :serialize => :json
    mount Pastiche::RESTStore.new('http://0.0.0.0:5984/foo_test')
  end
)

class RestyModel < Pastiche::Entity
  use :properties, :finders

  property :body, String

  set_storage Pastiche.stores[:test]
end