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-rw-r--r--activemodel/lib/active_model/serializers/json.rb3
1 files changed, 2 insertions, 1 deletions
diff --git a/activemodel/lib/active_model/serializers/json.rb b/activemodel/lib/active_model/serializers/json.rb
index c845440120..63ab8e7edc 100644
--- a/activemodel/lib/active_model/serializers/json.rb
+++ b/activemodel/lib/active_model/serializers/json.rb
@@ -10,8 +10,9 @@ module ActiveModel
included do
extend ActiveModel::Naming
+ extend ActiveModel::Configuration
- class_attribute :include_root_in_json
+ config_attribute :include_root_in_json
self.include_root_in_json = true
end