lib/blind_index/model.rb in blind_index-0.1.1 vs lib/blind_index/model.rb in blind_index-0.2.0

@@ -11,11 +11,11 @@
 
       class_eval do
         class << self
           def blind_indexes
             @blind_indexes ||= {}
-          end unless respond_to?(:blind_indexes)
+          end unless method_defined?(:blind_indexes)
         end
 
         raise BlindIndex::Error, "Duplicate blind index: #{name}" if blind_indexes[name]
 
         blind_indexes[name] = {
@@ -31,9 +31,22 @@
         end
 
         if callback
           before_validation method_name, if: -> { changes.key?(attribute.to_s) }
         end
+
+        # use include so user can override
+        include InstanceMethods if blind_indexes.size == 1
+      end
+    end
+  end
+
+  module InstanceMethods
+    def read_attribute_for_validation(key)
+      if (bi = self.class.blind_indexes[key])
+        send(bi[:attribute])
+      else
+        super
       end
     end
   end
 end