diff options
| -rw-r--r-- | activerecord/CHANGELOG.md | 7 | ||||
| -rw-r--r-- | activerecord/lib/active_record/autosave_association.rb | 17 | ||||
| -rw-r--r-- | activerecord/test/cases/autosave_association_test.rb | 14 |
3 files changed, 29 insertions, 9 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index 278da322f2..9e5a9a15c3 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,5 +1,12 @@ ## Rails 4.0.0 (unreleased) ## +* fixes bug introduced by #3329. Now, when autosaving associations, + deletions happen before inserts and saves. This prevents a 'duplicate + unique value' database error that would occur if a record being created had + the same value on a unique indexed field as that of a record being destroyed. + + *Johnny Holton* + * Run `rake migrate:down` & `rake migrate:up` in transaction if database supports. *Alexander Bondarev* diff --git a/activerecord/lib/active_record/autosave_association.rb b/activerecord/lib/active_record/autosave_association.rb index 44323ce9db..a98cacc78c 100644 --- a/activerecord/lib/active_record/autosave_association.rb +++ b/activerecord/lib/active_record/autosave_association.rb @@ -334,15 +334,18 @@ module ActiveRecord autosave = reflection.options[:autosave] if records = associated_records_to_validate_or_save(association, @new_record_before_save, autosave) - records_to_destroy = [] + + if autosave + records_to_destroy = records.select(&:marked_for_destruction?) + records_to_destroy.each { |record| association.destroy(record) } + records -= records_to_destroy + end + records.each do |record| - next if record.destroyed? saved = true - if autosave && record.marked_for_destruction? - records_to_destroy << record - elsif autosave != false && (@new_record_before_save || record.new_record?) + if autosave != false && (@new_record_before_save || record.new_record?) if autosave saved = association.insert_record(record, false) else @@ -354,10 +357,6 @@ module ActiveRecord raise ActiveRecord::Rollback unless saved end - - records_to_destroy.each do |record| - association.destroy(record) - end end # reconstruct the scope now that we know the owner's id diff --git a/activerecord/test/cases/autosave_association_test.rb b/activerecord/test/cases/autosave_association_test.rb index 536ff4882c..552bbd3f52 100644 --- a/activerecord/test/cases/autosave_association_test.rb +++ b/activerecord/test/cases/autosave_association_test.rb @@ -764,6 +764,20 @@ class TestDestroyAsPartOfAutosaveAssociation < ActiveRecord::TestCase assert_equal 2, @pirate.birds.reload.length end + def test_should_save_new_record_that_has_same_value_as_existing_record_marked_for_destruction_on_field_that_has_unique_index + Bird.connection.add_index :birds, :name, unique: true + + 3.times { |i| @pirate.birds.create(name: "birds_#{i}") } + + @pirate.birds[0].mark_for_destruction + @pirate.birds.build(name: @pirate.birds[0].name) + @pirate.save! + + assert_equal 3, @pirate.birds.reload.length + ensure + Bird.connection.remove_index :birds, column: :name + end + # Add and remove callbacks tests for association collections. %w{ method proc }.each do |callback_type| define_method("test_should_run_add_callback_#{callback_type}s_for_has_many") do |