Add generators.

This seemed like the easiest place to start.

lib/generators/serializer/USAGE

@@ -0,0 +1,6 @@
+Description:
+    Generates a serializer for the given resource with tests.
+
+Example:
+    `rails generate serializer Account name created_at`
+

lib/generators/serializer/serializer_generator.rb

@@ -0,0 +1,37 @@
+module Rails
+  module Generators
+    class SerializerGenerator < NamedBase
+      source_root File.expand_path("../templates", __FILE__)
+      check_class_collision :suffix => "Serializer"
+
+      argument :attributes, :type => :array, :default => [], :banner => "field:type field:type"
+
+      class_option :parent, :type => :string, :desc => "The parent class for the generated serializer"
+
+      def create_serializer_file
+        template 'serializer.rb', File.join('app/serializers', class_path, "#{file_name}_serializer.rb")
+      end
+
+      private
+
+      def attributes_names
+        [:id] + attributes.select { |attr| !attr.reference? }.map { |a| a.name.to_sym }
+      end
+
+      def association_names
+        attributes.select { |attr| attr.reference? }.map { |a| a.name.to_sym }
+      end
+
+      def parent_class_name
+        if options[:parent]
+          options[:parent]
+        elsif defined?(::ApplicationSerializer)
+          "ApplicationSerializer"
+        else
+          "ActiveModel::Serializer"
+        end
+      end
+    end
+  end
+end
+

lib/generators/serializer/templates/serializer.rb

@@ -0,0 +1,8 @@
+<% module_namespacing  do -%>
+class <%= class_name %>Serializer < <%= parent_class_name %>
+  attributes <%= attributes_names.map(&:inspect).join(", ") %>
+end
+<% association_names.each do |attribute| -%>
+  has_one :<%= attribute %>
+<% end -%>
+<% end  -%>