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-rw-r--r--actionpack/lib/action_controller/polymorphic_routes.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_controller/polymorphic_routes.rb b/actionpack/lib/action_controller/polymorphic_routes.rb
index cc228c4230..2644c7f7c7 100644
--- a/actionpack/lib/action_controller/polymorphic_routes.rb
+++ b/actionpack/lib/action_controller/polymorphic_routes.rb
@@ -73,7 +73,7 @@ module ActionController
#
def polymorphic_url(record_or_hash_or_array, options = {})
if record_or_hash_or_array.kind_of?(Array)
- record_or_hash_or_array = record_or_hash_or_array.dup
+ record_or_hash_or_array = record_or_hash_or_array.compact
end
record = extract_record(record_or_hash_or_array)