Define ActiveModel API Compliance

  - Define to_model on AR
  - Define to_model on ActiveModel::APICompliant
  - Update test fixtures to be API Compliant
  - Start using to_model in AP

2 files changed, 26 insertions, 0 deletions

diff --git a/activemodel/lib/active_model.rb b/activemodel/lib/active_model.rb
index f988cd71b8..c6f63d2fdc 100644
--- a/activemodel/lib/active_model.rb
+++ b/activemodel/lib/active_model.rb
@@ -26,6 +26,7 @@ $:.unshift(activesupport_path) if File.directory?(activesupport_path)
 require 'active_support'
 
 module ActiveModel
+  autoload :APICompliant, 'active_model/api_compliant'
   autoload :Attributes, 'active_model/attributes'
   autoload :Base, 'active_model/base'
   autoload :DeprecatedErrorMethods, 'active_model/deprecated_error_methods'
diff --git a/activemodel/lib/active_model/api_compliant.rb b/activemodel/lib/active_model/api_compliant.rb
new file mode 100644
index 0000000000..26f83feb6b
--- /dev/null
+++ b/activemodel/lib/active_model/api_compliant.rb
@@ -0,0 +1,25 @@
+module ActiveModel
+  module APICompliant
+    include Naming
+
+    def self.extended(klass)
+      klass.class_eval do
+        include Validations
+        include InstanceMethods
+      end
+    end
+  
+    module InstanceMethods
+      def to_model
+        if respond_to?(:new_record?)
+          self.class.class_eval { def to_model() self end }
+          to_model
+        else
+          raise "In order to be ActiveModel API compliant, you need to define " \
+                "a new_record? method, which should return true if it has not " \
+                "yet been persisted."
+        end
+      end
+    end
+  end
+end
\ No newline at end of file