diff options
Diffstat (limited to 'activerecord/lib/active_record/associations/collection_association.rb')
| -rw-r--r-- | activerecord/lib/active_record/associations/collection_association.rb | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations/collection_association.rb b/activerecord/lib/active_record/associations/collection_association.rb index 48cb819484..aa668fa4b4 100644 --- a/activerecord/lib/active_record/associations/collection_association.rb +++ b/activerecord/lib/active_record/associations/collection_association.rb @@ -400,7 +400,8 @@ module ActiveRecord records.each { |record| callback(:before_remove, record) } delete_records(existing_records, method) if existing_records.any? - records.each { |record| target.delete(record) } + hashed_records = records.group_by { |record| record } + target.select! { |record| !hashed_records[record] } records.each { |record| callback(:after_remove, record) } end |