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-rw-r--r--activerecord/lib/active_record/collection_cache_key.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/collection_cache_key.rb b/activerecord/lib/active_record/collection_cache_key.rb
index 0520591f4f..dfba78614e 100644
--- a/activerecord/lib/active_record/collection_cache_key.rb
+++ b/activerecord/lib/active_record/collection_cache_key.rb
@@ -15,7 +15,7 @@ module ActiveRecord
if collection.eager_loading?
collection = collection.send(:apply_join_dependency)
end
- column_type = type_for_attribute(timestamp_column.to_s)
+ column_type = type_for_attribute(timestamp_column)
column = connection.column_name_from_arel_node(collection.arel_attribute(timestamp_column))
select_values = "COUNT(*) AS #{connection.quote_column_name("size")}, MAX(%s) AS timestamp"