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-rw-r--r--activemodel/lib/active_model/naming.rb6
1 files changed, 5 insertions, 1 deletions
diff --git a/activemodel/lib/active_model/naming.rb b/activemodel/lib/active_model/naming.rb
index 2d580fd325..adb71f788f 100644
--- a/activemodel/lib/active_model/naming.rb
+++ b/activemodel/lib/active_model/naming.rb
@@ -129,7 +129,11 @@ module ActiveModel
private
def self.model_name_from_record_or_class(record_or_class)
- (record_or_class.is_a?(Class) ? record_or_class : record_or_class.class).model_name
+ (record_or_class.is_a?(Class) ? record_or_class : convert_to_model(record_or_class).class).model_name
+ end
+
+ def self.convert_to_model(object)
+ object.respond_to?(:to_model) ? object.to_model : object
end
end