diff options
Diffstat (limited to 'activerecord')
-rw-r--r-- | activerecord/lib/active_record/associations/preloader.rb | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/activerecord/lib/active_record/associations/preloader.rb b/activerecord/lib/active_record/associations/preloader.rb index d978a083b3..fd294051d4 100644 --- a/activerecord/lib/active_record/associations/preloader.rb +++ b/activerecord/lib/active_record/associations/preloader.rb @@ -134,11 +134,13 @@ module ActiveRecord end def grouped_records(association) - Hash[ - records_by_reflection(association).map do |reflection, records| - [reflection, records.group_by { |record| association_klass(reflection, record) }] - end - ] + reflection_records = records_by_reflection(association) + + reflection_records.each_with_object({}) do |(reflection, records),h| + h[reflection] = records.group_by { |record| + association_klass(reflection, record) + } + end end def records_by_reflection(association) |