got rid of extlib hooking system in favor of the new Rails3 callback system. As well as fixed timestamps! in ExtendedDoc

lib/couchrest/mixins.rb

@@ -1,3 +1,4 @@
 mixins_dir = File.join(File.dirname(__FILE__), 'mixins')
 
 require File.join(mixins_dir, 'attachments')
+require File.join(mixins_dir, 'callbacks')

lib/couchrest/mixins/callbacks.rb

@@ -0,0 +1,440 @@
+# Extracted from ActiveSupport::Callbacks written by Yehuda Katz
+# http://github.com/wycats/rails/raw/18b405f154868204a8f332888871041a7bad95e1/activesupport/lib/active_support/callbacks.rb
+
+module CouchRest
+  # Callbacks are hooks into the lifecycle of an object that allow you to trigger logic
+  # before or after an alteration of the object state.
+  #
+  # Mixing in this module allows you to define callbacks in your class.
+  #
+  # Example:
+  #   class Storage
+  #     include CouchRest::Callbacks
+  #
+  #     define_callbacks :save
+  #   end
+  #
+  #   class ConfigStorage < Storage
+  #     save_callback :before, :saving_message
+  #     def saving_message
+  #       puts "saving..."
+  #     end
+  #
+  #     save_callback :after do |object|
+  #       puts "saved"
+  #     end
+  #
+  #     def save
+  #       _run_save_callbacks do
+  #         puts "- save"
+  #       end
+  #     end
+  #   end
+  #
+  #   config = ConfigStorage.new
+  #   config.save
+  #
+  # Output:
+  #   saving...
+  #   - save
+  #   saved
+  #
+  # Callbacks from parent classes are inherited.
+  #
+  # Example:
+  #   class Storage
+  #     include CouchRest::Callbacks
+  #
+  #     define_callbacks :save
+  #
+  #     save_callback :before, :prepare
+  #     def prepare
+  #       puts "preparing save"
+  #     end
+  #   end
+  #
+  #   class ConfigStorage < Storage
+  #     save_callback :before, :saving_message
+  #     def saving_message
+  #       puts "saving..."
+  #     end
+  #
+  #     save_callback :after do |object|
+  #       puts "saved"
+  #     end
+  #
+  #     def save
+  #       _run_save_callbacks do
+  #         puts "- save"
+  #       end
+  #     end
+  #   end
+  #
+  #   config = ConfigStorage.new
+  #   config.save
+  #
+  # Output:
+  #   preparing save
+  #   saving...
+  #   - save
+  #   saved
+  module Callbacks
+    def self.included(klass)
+      klass.extend ClassMethods
+    end
+        
+    def run_callbacks(kind, options = {})
+      send("_run_#{kind}_callbacks")
+    end
+    
+    class Callback
+      @@_callback_sequence = 0
+      
+      attr_accessor :filter, :kind, :name, :options, :per_key, :klass
+      def initialize(filter, kind, options, klass, name)
+        @kind, @klass = kind, klass
+        @name         = name
+        
+        normalize_options!(options)
+
+        @per_key              = options.delete(:per_key)
+        @raw_filter, @options = filter, options
+        @filter               = _compile_filter(filter)
+        @compiled_options     = _compile_options(options)
+        @callback_id          = next_id
+
+        _compile_per_key_options
+      end
+      
+      def clone(klass)
+        obj                  = super()
+        obj.klass            = klass
+        obj.per_key          = @per_key.dup
+        obj.options          = @options.dup
+        obj.per_key[:if]     = @per_key[:if].dup
+        obj.per_key[:unless] = @per_key[:unless].dup
+        obj.options[:if]     = @options[:if].dup
+        obj.options[:unless] = @options[:unless].dup
+        obj
+      end
+      
+      def normalize_options!(options)
+        options[:if] = Array(options[:if])
+        options[:unless] = Array(options[:unless])
+
+        options[:per_key] ||= {}
+        options[:per_key][:if] = Array(options[:per_key][:if])
+        options[:per_key][:unless] = Array(options[:per_key][:unless])
+      end
+      
+      def next_id
+        @@_callback_sequence += 1
+      end
+      
+      def matches?(_kind, _name, _filter)
+        @kind   == _kind &&
+        @name   == _name &&
+        @filter == _filter
+      end
+
+      def _update_filter(filter_options, new_options)
+        filter_options[:if].push(new_options[:unless]) if new_options.key?(:unless)
+        filter_options[:unless].push(new_options[:if]) if new_options.key?(:if)
+      end
+            
+      def recompile!(_options, _per_key)
+        _update_filter(self.options, _options)
+        _update_filter(self.per_key, _per_key)
+        
+        @callback_id      = next_id
+        @filter           = _compile_filter(@raw_filter)
+        @compiled_options = _compile_options(@options)
+                            _compile_per_key_options
+      end
+
+      def _compile_per_key_options
+        key_options  = _compile_options(@per_key)
+
+        @klass.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
+          def _one_time_conditions_valid_#{@callback_id}?
+            true #{key_options[0]}
+          end
+        RUBY_EVAL
+      end
+      
+      # This will supply contents for before and around filters, and no
+      # contents for after filters (for the forward pass).
+      def start(key = nil, object = nil)
+        return if key && !object.send("_one_time_conditions_valid_#{@callback_id}?")
+        
+        # options[0] is the compiled form of supplied conditions
+        # options[1] is the "end" for the conditional
+                
+        if @kind == :before || @kind == :around
+          if @kind == :before
+            # if condition    # before_save :filter_name, :if => :condition
+            #   filter_name
+            # end
+            [@compiled_options[0], @filter, @compiled_options[1]].compact.join("\n")
+          elsif @compiled_options[0]
+            # Compile around filters with conditions into proxy methods
+            # that contain the conditions.
+            #
+            # For `around_save :filter_name, :if => :condition':
+            #
+            # def _conditional_callback_save_17
+            #   if condition
+            #     filter_name do
+            #       yield self
+            #     end
+            #   else
+            #     yield self
+            #   end
+            # end
+            
+            name = "_conditional_callback_#{@kind}_#{next_id}"
+            txt = <<-RUBY_EVAL
+              def #{name}
+                #{@compiled_options[0]}
+                  #{@filter} do
+                    yield self
+                  end
+                else
+                  yield self
+                end
+              end
+            RUBY_EVAL
+            @klass.class_eval(txt)
+            "#{name} do"
+          else
+            "#{@filter} do"
+          end
+        end
+      end
+      
+      # This will supply contents for around and after filters, but not
+      # before filters (for the backward pass).
+      def end(key = nil, object = nil)
+        return if key && !object.send("_one_time_conditions_valid_#{@callback_id}?")
+        
+        if @kind == :around || @kind == :after
+          # if condition    # after_save :filter_name, :if => :condition
+          #   filter_name
+          # end
+          if @kind == :after
+            [@compiled_options[0], @filter, @compiled_options[1]].compact.join("\n")
+          else
+            "end"
+          end
+        end
+      end
+      
+      private
+      # Options support the same options as filters themselves (and support
+      # symbols, string, procs, and objects), so compile a conditional
+      # expression based on the options
+      def _compile_options(options)        
+        return [] if options[:if].empty? && options[:unless].empty?
+        
+        conditions = []
+        
+        unless options[:if].empty?
+          conditions << Array(_compile_filter(options[:if]))
+        end
+        
+        unless options[:unless].empty?
+          conditions << Array(_compile_filter(options[:unless])).map {|f| "!#{f}"}
+        end
+        
+        ["if #{conditions.flatten.join(" && ")}", "end"]
+      end
+      
+      # Filters support:
+      #   Arrays::  Used in conditions. This is used to specify
+      #             multiple conditions. Used internally to
+      #             merge conditions from skip_* filters
+      #   Symbols:: A method to call
+      #   Strings:: Some content to evaluate
+      #   Procs::   A proc to call with the object
+      #   Objects:: An object with a before_foo method on it to call
+      #
+      # All of these objects are compiled into methods and handled
+      # the same after this point:
+      #   Arrays::  Merged together into a single filter
+      #   Symbols:: Already methods
+      #   Strings:: class_eval'ed into methods
+      #   Procs::   define_method'ed into methods
+      #   Objects:: 
+      #     a method is created that calls the before_foo method
+      #     on the object.
+      def _compile_filter(filter)
+        method_name = "_callback_#{@kind}_#{next_id}"
+        case filter
+        when Array
+          filter.map {|f| _compile_filter(f)}
+        when Symbol
+          filter
+        when Proc
+          @klass.send(:define_method, method_name, &filter)
+          method_name << (filter.arity == 1 ? "(self)" : "")
+        when String
+          @klass.class_eval <<-RUBY_EVAL
+            def #{method_name}
+              #{filter}
+            end
+          RUBY_EVAL
+          method_name
+        else
+          kind, name = @kind, @name
+          @klass.send(:define_method, method_name) do
+            filter.send("#{kind}_#{name}", self)
+          end
+          method_name
+        end
+      end
+    end
+
+    # This method_missing is supplied to catch callbacks with keys and create
+    # the appropriate callback for future use.
+    def method_missing(meth, *args, &blk)
+      if meth.to_s =~ /_run_(\w+)_(\w+)_(\w+)_callbacks/
+        return self.class._create_and_run_keyed_callback($1, $2.to_sym, $3.to_sym, self, &blk)
+      end
+      super
+    end
+    
+    # An Array with a compile method
+    class CallbackChain < Array
+      def compile(key = nil, object = nil)
+        method = []
+        each do |callback|
+          method << callback.start(key, object)
+        end
+        method << "yield self"
+        reverse_each do |callback|
+          method << callback.end(key, object)
+        end
+        method.compact.join("\n")
+      end
+      
+      def clone(klass)
+        CallbackChain.new(map {|c| c.clone(klass)})
+      end
+    end
+        
+    module ClassMethods
+      CHAINS = {:before => :before, :around => :before, :after => :after}
+      
+      # Make the _run_save_callbacks method. The generated method takes
+      # a block that it'll yield to. It'll call the before and around filters
+      # in order, yield the block, and then run the after filters.
+      # 
+      # _run_save_callbacks do
+      #   save
+      # end
+      #
+      # The _run_save_callbacks method can optionally take a key, which
+      # will be used to compile an optimized callback method for each
+      # key. See #define_callbacks for more information.
+      def _define_runner(symbol, str, options)
+        self.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
+          def _run_#{symbol}_callbacks(key = nil)
+            if key
+              send("_run_\#{self.class}_#{symbol}_\#{key}_callbacks") { yield }
+            else
+              #{str}
+            end
+          end
+        RUBY_EVAL
+        
+        before_name, around_name, after_name = 
+          options.values_at(:before, :after, :around)
+      end
+      
+      # This is called the first time a callback is called with a particular
+      # key. It creates a new callback method for the key, calculating
+      # which callbacks can be omitted because of per_key conditions.
+      def _create_and_run_keyed_callback(klass, kind, key, obj, &blk)
+        @_keyed_callbacks ||= {}
+        @_keyed_callbacks[[kind, key]] ||= begin
+          str = self.send("_#{kind}_callbacks").compile(key, obj)
+          self.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
+            def _run_#{klass}_#{kind}_#{key}_callbacks
+              #{str}
+            end
+          RUBY_EVAL
+          true
+        end
+        obj.send("_run_#{klass}_#{kind}_#{key}_callbacks", &blk)
+      end
+      
+      # Define callbacks.
+      #
+      # Creates a <name>_callback method that you can use to add callbacks.
+      #
+      # Syntax:
+      #   save_callback :before, :before_meth
+      #   save_callback :after,  :after_meth, :if => :condition
+      #   save_callback :around {|r| stuff; yield; stuff }
+      #
+      # The <name>_callback method also updates the _run_<name>_callbacks
+      # method, which is the public API to run the callbacks.
+      #
+      # Also creates a skip_<name>_callback method that you can use to skip
+      # callbacks.
+      #
+      # When creating or skipping callbacks, you can specify conditions that
+      # are always the same for a given key. For instance, in ActionPack,
+      # we convert :only and :except conditions into per-key conditions.
+      #
+      #   before_filter :authenticate, :except => "index"
+      # becomes
+      #   dispatch_callback :before, :authenticate, :per_key => {:unless => proc {|c| c.action_name == "index"}}
+      #
+      # Per-Key conditions are evaluated only once per use of a given key.
+      # In the case of the above example, you would do:
+      #
+      #   run_dispatch_callbacks(action_name) { ... dispatch stuff ... }
+      #
+      # In that case, each action_name would get its own compiled callback
+      # method that took into consideration the per_key conditions. This
+      # is a speed improvement for ActionPack.
+      def define_callbacks(*symbols)
+        symbols.each do |symbol|
+          self.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
+            class_inheritable_accessor :_#{symbol}_callbacks
+            self._#{symbol}_callbacks = CallbackChain.new
+
+            def self.#{symbol}_callback(type, *filters, &blk)
+              options = filters.last.is_a?(Hash) ? filters.pop : {}
+              filters.unshift(blk) if block_given?
+              filters.map! {|f| Callback.new(f, type, options.dup, self, :#{symbol})}
+              self._#{symbol}_callbacks.push(*filters)
+              _define_runner(:#{symbol}, self._#{symbol}_callbacks.compile, options)
+            end
+            
+            def self.skip_#{symbol}_callback(type, *filters, &blk)
+              options = filters.last.is_a?(Hash) ? filters.pop : {}
+              filters.unshift(blk) if block_given?
+              filters.each do |filter|
+                self._#{symbol}_callbacks = self._#{symbol}_callbacks.clone(self)
+                
+                filter = self._#{symbol}_callbacks.find {|c| c.matches?(type, :#{symbol}, filter) }
+                per_key = options[:per_key] || {}
+                if filter
+                  filter.recompile!(options, per_key)
+                else
+                  self._#{symbol}_callbacks.delete(filter)
+                end
+                _define_runner(:#{symbol}, self._#{symbol}_callbacks.compile, options)
+              end
+              
+            end
+            
+            self.#{symbol}_callback(:before)
+          RUBY_EVAL
+        end
+      end
+    end
+  end
+end

lib/couchrest/mixins/validation.rb

@@ -21,9 +21,6 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-require 'rubygems'
-require 'pathname'
-
 class Object
   def validatable?
     false
@@ -48,6 +45,18 @@ module CouchRest
     
     def self.included(base)
       base.extend(ClassMethods)
+      base.class_eval <<-EOS, __FILE__, __LINE__
+        if (method_defined?(:save) && method_defined?(:_run_save_callbacks))
+          save_callback :before, :check_validations
+        end
+      EOS
+    end
+
+    # Ensures the object is valid for the context provided, and otherwise
+    # throws :halt and returns false.
+    #
+    def check_validations(context = :default)
+      throw(:halt, false) unless context.nil? || valid?(context)
     end
     
     # Return the ValidationErrors

lib/couchrest/more/extended_document.rb

@@ -1,11 +1,3 @@
-require 'rubygems'
-begin
-  gem 'extlib'
-  require 'extlib'
-rescue 
-  puts "CouchRest::Model requires extlib. This is left out of the gemspec on purpose."
-  raise
-end
 require 'mime/types'
 require File.join(File.dirname(__FILE__), "property")
 require File.join(File.dirname(__FILE__), '..', 'mixins', 'extended_document_mixins')
@@ -18,16 +10,25 @@ module CouchRest
     include CouchRest::Mixins::DocumentProperties
     include CouchRest::Mixins::Views
     include CouchRest::Mixins::DesignDoc
+    include CouchRest::Callbacks
     
+    # Callbacks
+    define_callbacks :save
+    define_callbacks :destroy
     
     # Automatically set <tt>updated_at</tt> and <tt>created_at</tt> fields
     # on the document whenever saving occurs. CouchRest uses a pretty
     # decent time format by default. See Time#to_json
     def self.timestamps!
-      before(:save) do
+      class_eval <<-EOS, __FILE__, __LINE__
-        self['updated_at'] = Time.now
+        property(:updated_at, :read_only => true)
-        self['created_at'] = self['updated_at'] if new_document?
+        property(:created_at, :read_only => true)
+        
+        save_callback :before do |object|
+          object['updated_at'] = Time.now
+          object['created_at'] = object['updated_at'] if object.new_document?
         end
+      EOS
     end
   
     # Name a method that will be called before the document is first saved,
@@ -84,9 +85,19 @@ module CouchRest
     # for compatibility with old-school frameworks
     alias :new_record? :new_document?
     
+    # Trigger the callbacks (before, after, around)
+    # and save the document
+    def save(bulk = false)
+      caught = catch(:halt)  do
+        _run_save_callbacks do
+          save_without_callbacks(bulk)
+        end
+      end
+    end
+    
     # Overridden to set the unique ID.
     # Returns a boolean value
-    def save(bulk = false)
+    def save_without_callbacks(bulk = false)
       set_unique_id if new_document? && self.respond_to?(:set_unique_id)
       result = database.save_doc(self, bulk)
       result["ok"] == true
@@ -102,6 +113,8 @@ module CouchRest
     # Removes the <tt>_id</tt> and <tt>_rev</tt> fields, preparing the
     # document to be saved to a new <tt>_id</tt>.
     def destroy
+      caught = catch(:halt)  do
+        _run_destroy_callbacks do
           result = database.delete_doc self
           if result['ok']
             self['_rev'] = nil
@@ -109,6 +122,8 @@ module CouchRest
           end
           result['ok']
         end
+      end
+    end
     
   end
 end

lib/couchrest/validation/contextual_validators.rb

@@ -1,3 +1,26 @@
+# Extracted from dm-validations 0.9.10
+#
+# Copyright (c) 2007 Guy van den Berg
+# 
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
 module CouchRest
   module Validation
 

lib/couchrest/validation/validators/absent_field_validator.rb

@@ -50,7 +50,6 @@ module CouchRest
       ##
       #
       # @example [Usage]
-      #   require 'dm-validations'
       #
       #   class Page
       #

lib/couchrest/validation/validators/method_validator.rb

@@ -1,3 +1,26 @@
+# Extracted from dm-validations 0.9.10
+#
+# Copyright (c) 2007 Guy van den Berg
+# 
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
 module CouchRest
   module Validation
 

lib/couchrest/validation/validators/numeric_validator.rb

@@ -1,3 +1,26 @@
+# Extracted from dm-validations 0.9.10
+#
+# Copyright (c) 2007 Guy van den Berg
+# 
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
 module CouchRest
   module Validation
 

lib/couchrest/validation/validators/required_field_validator.rb

@@ -1,3 +1,26 @@
+# Extracted from dm-validations 0.9.10
+#
+# Copyright (c) 2007 Guy van den Berg
+# 
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
 module CouchRest
   module Validation
 

spec/couchrest/more/property_spec.rb

@@ -34,6 +34,14 @@ describe "ExtendedDocument properties" do
     @card.family_name.should == @card.last_name
   end
   
+  it "should be auto timestamped" do
+    @card.created_at.should be_nil
+    @card.updated_at.should be_nil
+    @card.save
+    @card.created_at.should_not be_nil
+    @card.updated_at.should_not be_nil
+  end
+  
   describe "validation" do
     
     before(:each) do
@@ -65,6 +73,13 @@ describe "ExtendedDocument properties" do
       @invoice.errors.on(:location).first.should == "Hey stupid!, you forgot the location"
     end
     
+    it "should validate before saving" do
+      @invoice.location = nil
+      @invoice.should_not be_valid
+      @invoice.save.should be_false
+      @invoice.should be_new_document
+    end
+  
   end
   
 end

spec/fixtures/more/card.rb

@@ -10,6 +10,8 @@ class Card < CouchRest::ExtendedDocument
   property :last_name,        :alias     => :family_name
   property :read_only_value,  :read_only => true
   
+  timestamps!
+  
   # Validation
   validates_present :first_name