diff options
| -rw-r--r-- | activerecord/lib/active_record/validations/uniqueness.rb | 2 | ||||
| -rw-r--r-- | activerecord/test/cases/validations/uniqueness_validation_test.rb | 11 |
2 files changed, 12 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/validations/uniqueness.rb b/activerecord/lib/active_record/validations/uniqueness.rb index a376e2a17f..f0aa4521b5 100644 --- a/activerecord/lib/active_record/validations/uniqueness.rb +++ b/activerecord/lib/active_record/validations/uniqueness.rb @@ -19,7 +19,7 @@ module ActiveRecord relation = build_relation(finder_class, table, attribute, value) if record.persisted? && finder_class.primary_key.to_s != attribute.to_s if finder_class.primary_key - relation = relation.where.not(finder_class.primary_key => record.id) + relation = relation.where.not(finder_class.primary_key => record.id_was) else raise UnknownPrimaryKey.new(finder_class, "Can not validate uniqueness for persisted record without primary key.") end diff --git a/activerecord/test/cases/validations/uniqueness_validation_test.rb b/activerecord/test/cases/validations/uniqueness_validation_test.rb index 7502a55391..e601c53dbf 100644 --- a/activerecord/test/cases/validations/uniqueness_validation_test.rb +++ b/activerecord/test/cases/validations/uniqueness_validation_test.rb @@ -469,4 +469,15 @@ class UniquenessValidationTest < ActiveRecord::TestCase assert_match(/\AUnknown primary key for table dashboards in model/, e.message) assert_match(/Can not validate uniqueness for persisted record without primary key.\z/, e.message) end + + def test_validate_uniqueness_ignores_itself_when_primary_key_changed + Topic.validates_uniqueness_of(:title) + + t = Topic.new("title" => "This is a unique title") + assert t.save, "Should save t as unique" + + t.id += 1 + assert t.valid?, "Should be valid" + assert t.save, "Should still save t as unique" + end end |