Merge branch 'master' of git://github.com/rails/rails

1 files changed, 53 insertions, 0 deletions

diff --git a/activemodel/lib/active_model/validations/with.rb b/activemodel/lib/active_model/validations/with.rb
index 83d3ea80d6..6dbde5bfad 100644
--- a/activemodel/lib/active_model/validations/with.rb
+++ b/activemodel/lib/active_model/validations/with.rb
@@ -1,5 +1,13 @@
 module ActiveModel
   module Validations
+    module HelperMethods
+      private
+        def _merge_attributes(attr_names)
+          options = attr_names.extract_options!
+          options.merge(:attributes => attr_names.flatten)
+        end
+    end
+
     module ClassMethods
 
       # Passes the record off to the class or classes specified and allows them
@@ -75,5 +83,50 @@ module ActiveModel
         end
       end
     end
+
+    # Passes the record off to the class or classes specified and allows them
+    # to add errors based on more complex conditions.
+    #
+    #   class Person
+    #     include ActiveModel::Validations
+    #
+    #     validates :instance_validations
+    #
+    #     def instance_validations
+    #       validates_with MyValidator
+    #     end
+    #   end
+    #
+    # Please consult the class method documentation for more information on
+    # creating your own validator.
+    #
+    # You may also pass it multiple classes, like so:
+    #
+    #   class Person
+    #     include ActiveModel::Validations
+    #
+    #     validates :instance_validations, :on => :create
+    #
+    #     def instance_validations
+    #       validates_with MyValidator, MyOtherValidator
+    #     end
+    #   end
+    #
+    # Standard configuration options (:on, :if and :unless), which are
+    # available on the class version of validates_with, should instead be
+    # placed on the <tt>validates</tt> method as these are applied and tested
+    # in the callback
+    #
+    # If you pass any additional configuration options, they will be passed
+    # to the class and available as <tt>options</tt>, please refer to the
+    # class version of this method for more information
+    #
+    def validates_with(*args, &block)
+      options = args.extract_options!
+      args.each do |klass|
+        validator = klass.new(options, &block)
+        validator.validate(self)
+      end
+    end
   end
 end
\ No newline at end of file