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-rw-r--r--activerecord/lib/active_record/autosave_association.rb5
1 files changed, 4 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/autosave_association.rb b/activerecord/lib/active_record/autosave_association.rb
index 085fdba639..056170d82a 100644
--- a/activerecord/lib/active_record/autosave_association.rb
+++ b/activerecord/lib/active_record/autosave_association.rb
@@ -370,7 +370,10 @@ module ActiveRecord
else
key = reflection.options[:primary_key] ? send(reflection.options[:primary_key]) : id
if autosave != false && (new_record? || record.new_record? || record[reflection.foreign_key] != key || autosave)
- record[reflection.foreign_key] = key
+ unless reflection.through_reflection
+ record[reflection.foreign_key] = key
+ end
+
saved = record.save(:validate => !autosave)
raise ActiveRecord::Rollback if !saved && autosave
saved