diff options
| -rw-r--r-- | activerecord/lib/active_record/associations/preloader.rb | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/associations/preloader.rb b/activerecord/lib/active_record/associations/preloader.rb index 62caf02a2c..e1754d4a19 100644 --- a/activerecord/lib/active_record/associations/preloader.rb +++ b/activerecord/lib/active_record/associations/preloader.rb @@ -91,13 +91,13 @@ module ActiveRecord # { author: :avatar } # [ :books, { author: :avatar } ] def preload(records, associations, preload_scope = nil) - records = Array.wrap(records).compact.uniq - associations = Array.wrap(associations) + records = records.compact if records.empty? [] else - associations.flat_map { |association| + records.uniq! + Array.wrap(associations).flat_map { |association| preloaders_on association, records, preload_scope } end |