2 files changed, 6 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/suppressor.rb b/activerecord/lib/active_record/suppressor.rb
index b3644bf569..8ec4b48d31 100644
--- a/activerecord/lib/active_record/suppressor.rb
+++ b/activerecord/lib/active_record/suppressor.rb
@@ -37,7 +37,11 @@ module ActiveRecord
       end
     end
 
-    def create_or_update(*args) # :nodoc:
+    def save(*) # :nodoc:
+      SuppressorRegistry.suppressed[self.class.name] ? true : super
+    end
+
+    def save!(*) # :nodoc:
       SuppressorRegistry.suppressed[self.class.name] ? true : super
     end
   end
diff --git a/activerecord/lib/active_record/validations/uniqueness.rb b/activerecord/lib/active_record/validations/uniqueness.rb
index 13053beb78..4a80cda0b8 100644
--- a/activerecord/lib/active_record/validations/uniqueness.rb
+++ b/activerecord/lib/active_record/validations/uniqueness.rb
@@ -18,7 +18,7 @@ module ActiveRecord
         relation = build_relation(finder_class, table, attribute, value)
         if record.persisted?
           if finder_class.primary_key
-            relation = relation.where.not(finder_class.primary_key => record.id_was)
+            relation = relation.where.not(finder_class.primary_key => record.id_was || record.id)
           else
             raise UnknownPrimaryKey.new(finder_class, "Can not validate uniqueness for persisted record without primary key.")
           end