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-rw-r--r--activerecord/lib/active_record/query_cache.rb10
1 files changed, 8 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/query_cache.rb b/activerecord/lib/active_record/query_cache.rb
index 9296c5b81a..191e5a3d97 100644
--- a/activerecord/lib/active_record/query_cache.rb
+++ b/activerecord/lib/active_record/query_cache.rb
@@ -58,8 +58,14 @@ module ActiveRecord
else
@query_cache[sql] = yield
end
-
- result ? result.dup : nil
+
+ if result
+ # perform a deep #dup in case result is an array
+ result = result.collect { |row| row.dup } if result.respond_to?(:collect)
+ result.dup
+ else
+ nil
+ end
end
def method_missing(method, *arguments, &proc)