diff options
| -rw-r--r-- | activerecord/CHANGELOG.md | 9 | ||||
| -rw-r--r-- | activerecord/lib/active_record/associations/has_one_association.rb | 10 | ||||
| -rw-r--r-- | activerecord/test/cases/associations/has_one_associations_test.rb | 6 |
3 files changed, 24 insertions, 1 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index 11559e3cb3..dee398177c 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,5 +1,14 @@ ## Rails 4.0.0 (unreleased) ## +* Do not create useless database transaction when building `has_one` association. + + Example: + + User.has_one :profile + User.new.build_profile + + *Bogdan Gusiev* + * :counter_cache option for `has_many` associations to support custom named counter caches. Fix #7993 diff --git a/activerecord/lib/active_record/associations/has_one_association.rb b/activerecord/lib/active_record/associations/has_one_association.rb index 06bead41de..ee816d2392 100644 --- a/activerecord/lib/active_record/associations/has_one_association.rb +++ b/activerecord/lib/active_record/associations/has_one_association.rb @@ -28,7 +28,7 @@ module ActiveRecord # If target and record are nil, or target is equal to record, # we don't need to have transaction. if (target || record) && target != record - reflection.klass.transaction do + transaction_if(save) do remove_target!(options[:dependent]) if target && !target.destroyed? if record @@ -90,6 +90,14 @@ module ActiveRecord def nullify_owner_attributes(record) record[reflection.foreign_key] = nil end + + def transaction_if(value) + if value + reflection.klass.transaction { yield } + else + yield + end + end end end end diff --git a/activerecord/test/cases/associations/has_one_associations_test.rb b/activerecord/test/cases/associations/has_one_associations_test.rb index 2d3cb654df..ea1cfa0805 100644 --- a/activerecord/test/cases/associations/has_one_associations_test.rb +++ b/activerecord/test/cases/associations/has_one_associations_test.rb @@ -206,6 +206,12 @@ class HasOneAssociationsTest < ActiveRecord::TestCase assert_equal account, firm.account end + def test_build_association_dont_create_transaction + assert_no_queries { + Firm.new.build_account + } + end + def test_build_and_create_should_not_happen_within_scope pirate = pirates(:blackbeard) scoped_count = pirate.association(:foo_bulb).scope.where_values.count |