Adding attributes to wrapped element in XML collection

[navinpeiris]

We currently need to be able to add attributes to the element wrapping collections in XML, and from the code and the documentation I couldn't find an elegant way of doing this.

This will allow you to do the following:

collection :songs, :as => :song, :wrap => :songs, :wrap_attributes => {:foo => :bar}

which would generate the XML:

<?xml version="1.0"?>
<songs foo="bar">
  <song>
    <name>Thinning the Herd</name>
  </song>
</songs>

[apotonick]

This is a great idea. However, if we allow rendering, we also have to take care of parsing that stuff back. I'd love to have a generic attributes mapping... like the one that's already in place, but working for child elements, too.