Remove dependency on UUID in order to get key names that agree with A…

…R object ID

README.rdoc

@@ -36,8 +36,6 @@ Getting started with HashPipe is easy.
 
     config.gem "jsl-hashpipe", :lib => 'hashpipe', :source => 'http://gems.github.com'
 
-* Add a column :uuid of type String, unique to the table where you want to use an hashpipe attribute (hattr)
-
 * If you wanted to serialize an attribute 'elephant' in model Foo, you would call hattr :elephant in your model.  
   For example, class 'Foo' may look like:
 

lib/hashpipe.rb

@@ -1,8 +1,6 @@
 require File.expand_path(File.join(File.dirname(__FILE__), %w[hashpipe archived_attribute] ))
 require File.expand_path(File.join(File.dirname(__FILE__), %w[hashpipe global_configuration] ))
 
-require 'uuid'
-
 module HashPipe
 
   def self.included(base)
@@ -20,8 +18,7 @@ def hattr(*args)
       if archived_attribute_definitions.nil?
         write_inheritable_attribute(:archived_attribute_definitions, {})
 
-        before_save :generate_uuid
-        before_save :save_archived_attributes
+        after_save :save_archived_attributes
         before_destroy :destroy_archived_attributes
       end
 
@@ -72,10 +69,6 @@ def destroy_archived_attributes
       end
     end
 
-    def generate_uuid
-      self.uuid = UUID.new.generate if self.new_record?
-    end
-
   end
 end
 

lib/hashpipe/moneta_backend.rb

@@ -34,7 +34,7 @@ def require_moneta_library_for(cache_klass)
     def key_name
       [ table_name_from(@archived_attribute),
         @archived_attribute.name,
-        @archived_attribute.instance.uuid ].join('/')
+        @archived_attribute.instance.id ].join('/')
     end
 
     def table_name_from(archived_attribute)

spec/hashpipe_spec.rb

@@ -47,7 +47,7 @@ class Story < ActiveRecord::Base
     }.should_not change(@bear_story, :uuid)
   end
 
-  [:generate_uuid, :save_archived_attributes, :destroy_archived_attributes].each do |sym|
+  [:save_archived_attributes, :destroy_archived_attributes].each do |sym|
     it "should respond to attached storage method #{sym}" do
       Story.new.should respond_to(sym)
     end