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-rw-r--r--activerecord/lib/active_record/associations/has_many_through_association.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations/has_many_through_association.rb b/activerecord/lib/active_record/associations/has_many_through_association.rb
index 954128064d..f6e08991f7 100644
--- a/activerecord/lib/active_record/associations/has_many_through_association.rb
+++ b/activerecord/lib/active_record/associations/has_many_through_association.rb
@@ -89,7 +89,7 @@ module ActiveRecord
end
def through_scope_attributes
- scope.where_values_hash(through_association.reflection.name.to_s)
+ scope.where_values_hash(through_association.reflection.name.to_s).except!(through_association.reflection.foreign_key)
end
def save_through_record(record)