Inherit method

README.md

@@ -71,6 +71,17 @@ class Song
 
 This won't `clone` but simply pass the value on to the subclass.
 
+## Inherit method
+
+`::inheritable_attr` uses `Object#clone` method which doesn't work properly for cloning i.e. hashes. You can specify your own inherit method:
+
+```ruby
+require 'active_support/core_ext/object/deep_dup'
+
+class Song
+  extend Uber::InheritableAttr
+  inheritable_attr :properties, inherit_method: :deep_dup
+```
 
 # Dynamic Options
 

lib/uber/inheritable_attr.rb

@@ -20,7 +20,12 @@ def self.inherit_for(klass, name, options={})
       value = klass.superclass.send(name) # could be nil
 
       return value if options[:clone] == false
-      Clone.(value) # this could be dynamic, allowing other inheritance strategies.
+
+      if options[:inherit_method]
+        value.send(options[:inherit_method])
+      else
+        Clone.(value) # this could be dynamic, allowing other inheritance strategies.
+      end
     end
 
     class Clone

test/inheritable_attr_test.rb

@@ -9,6 +9,9 @@ class InheritableAttrTest < MiniTest::Spec
         inheritable_attr :drinks
         inheritable_attr :glass
         inheritable_attr :guests, clone: false
+
+        inheritable_attr :dj, inherit_method: :dup
+        self.dj = "Paul Oakenfold".freeze
       end
     }
 
@@ -87,5 +90,12 @@ def assert_nothing_raised(*)
 
       subklass.glass.must_equal false
     end
+
+    it "respects :inherit_method" do
+      class B < subject
+      end
+
+      refute B.dj.frozen?
+    end
   end
 end