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-rw-r--r--actionpack/lib/action_dispatch/http/mime_type.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/http/mime_type.rb b/actionpack/lib/action_dispatch/http/mime_type.rb
index c24c9a1bc3..f29ad359ac 100644
--- a/actionpack/lib/action_dispatch/http/mime_type.rb
+++ b/actionpack/lib/action_dispatch/http/mime_type.rb
@@ -312,6 +312,10 @@ module Mime
true
end
+ def ref
+ nil
+ end
+
def respond_to_missing?(method, include_private = false)
method.to_s.ends_with? '?'
end