rails/rails — pull request #8111 by nikitug (2012-11-03 11:27:38+00:00)
Title: Use `tag!` instead of `method_missing` in `to_xml` conversions.

Since version `3.0.x` `Builder` caches method passed to `method_missing` each time. This commit replaces `method_missing` call with `tag!` call to prevent method redefinition on each `to_xml` call with the same builder.