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-rw-r--r--activerecord/lib/active_record/associations/through_association.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations/through_association.rb b/activerecord/lib/active_record/associations/through_association.rb
index b347a94978..f95e5337c2 100644
--- a/activerecord/lib/active_record/associations/through_association.rb
+++ b/activerecord/lib/active_record/associations/through_association.rb
@@ -44,7 +44,7 @@ module ActiveRecord
join_attributes = {
source_reflection.foreign_key =>
records.map { |record|
- record.send(source_reflection.association_primary_key)
+ record.send(source_reflection.association_primary_key(reflection.klass))
}
}