[Rails] Using partials with XML builder, what's the right way?

Hello everyone,

Partials in XML builder are proving to be non-trivial.

After some initial Google searching, I found the following to work,
although it's not 100%

xml.foo do
xml.id(foo.id)
xml.created_at(foo.created_at)
xml.last_updated(foo.updated_at)
foo.bars.each do |bar|
xml << render(:partial => 'bar/_bar', :locals => { :bar
=> bar })
end
end

this will do the trick, except the XML output is not properly
indented. the output looks something similar to:

<foo>
<id>1</id>
<created_at>sometime</created_at>
<last_updated>sometime</last_updated>
<bar>
...
</bar>
<bar>
...
</bar>
</foo>

The ``<bar>`` element should align underneath the ``<last_updated>``
element, it is a child of ``<foo>`` like this:

<foo>
<id>1</id>
<created_at>sometime</created_at>
<last_updated>sometime</last_updated>
<bar>
...
</bar>
<bar>
...
</bar>
</foo>

Works great if I copy the content from bar/_bar.xml.builder into the
template, but then things just aren't DRY.

Thanks,

Matthew

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