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-rw-r--r--activerecord/lib/active_record/relation/query_methods.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb
index ef3545c76a..75369513e3 100644
--- a/activerecord/lib/active_record/relation/query_methods.rb
+++ b/activerecord/lib/active_record/relation/query_methods.rb
@@ -52,7 +52,7 @@ module ActiveRecord
return self if args.blank?
relation = clone
- relation.references_values = (references_values + args).flatten.uniq
+ relation.references_values = (references_values + args.flatten.map(&:to_s)).uniq
relation
end