diff options
| -rw-r--r-- | activerecord/lib/active_record/associations/association_collection.rb | 2 | ||||
| -rw-r--r-- | activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb | 11 |
2 files changed, 12 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations/association_collection.rb b/activerecord/lib/active_record/associations/association_collection.rb index a28be9eed1..9061037b39 100644 --- a/activerecord/lib/active_record/associations/association_collection.rb +++ b/activerecord/lib/active_record/associations/association_collection.rb @@ -344,7 +344,7 @@ module ActiveRecord callback(:before_add, record) yield(record) if block_given? @target ||= [] unless loaded? - @target << record + @target << record unless @reflection.options[:uniq] && @target.include?(record) callback(:after_add, record) record end diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb index 1ed0522e53..f71b122ff0 100644 --- a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb +++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb @@ -299,6 +299,17 @@ class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase assert_equal 3, projects(:active_record, :reload).developers.size end + def test_uniq_option_prevents_duplicate_push + project = projects(:active_record) + project.developers << developers(:jamis) + project.developers << developers(:david) + assert_equal 3, project.developers.size + + project.developers << developers(:david) + project.developers << developers(:jamis) + assert_equal 3, project.developers.size + end + def test_deleting david = Developer.find(1) active_record = Project.find(1) |