1 files changed, 5 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations/builder/association.rb b/activerecord/lib/active_record/associations/builder/association.rb
index e474236939..947d61ee7b 100644
--- a/activerecord/lib/active_record/associations/builder/association.rb
+++ b/activerecord/lib/active_record/associations/builder/association.rb
@@ -36,6 +36,7 @@ module ActiveRecord::Associations::Builder
       reflection = builder.build(model)
       define_accessors model, reflection
       define_callbacks model, reflection
+      define_validations model, reflection
       builder.define_extensions model
       reflection
     end
@@ -124,6 +125,10 @@ module ActiveRecord::Associations::Builder
       CODE
     end
 
+    def self.define_validations(model, reflection)
+      # noop
+    end
+
     def self.valid_dependent_options
       raise NotImplementedError
     end