node.rb in pp-adaptive-1.0.0

- old
+ new

@@ -10,11 +10,11 @@
   # In the above, the model gets an Attribute named #child, mapping to a JSON parameter named 'childItem'.
   # The object at `model.child` is present by default, and is an object of type Child.
   #
   # Assigning a Hash directly to the attribute will store an object of the boxed type, based on the elements
   # in the Hash.
-  class Node < Virtus::Attribute::Object
+  class Node < Virtus::Attribute
     # Provide access to the boxed type
     attr_reader :type
 
     class << self
       # Returns a descendant of Node, boxing the given type
@@ -28,9 +28,10 @@
         raise ArgumentError, "Child nodes may only be other JsonModel classes" unless type <= JsonModel
 
         @generated_class_map       ||= {}
         @generated_class_map[type] ||= Class.new(self) do
           default lambda { |m, a| type.new }
+          lazy true
 
           define_method :type do
             type
           end
 