lib/mongo_mapper/plugins/keys/key.rb in mongo_mapper-0.8.2 vs lib/mongo_mapper/plugins/keys/key.rb in mongo_mapper-0.8.3

@@ -19,9 +19,13 @@
         def embeddable?
           return false unless type.respond_to?(:embeddable?)
           type.embeddable?
         end
 
+        def can_default_id?
+          type && [ObjectId, BSON::ObjectID, String].include?(type)
+        end
+
         def number?
           [Integer, Float].include?(type)
         end
 
         def get(value)
\ No newline at end of file