require 'builder'
builder = Builder::XmlMarkup.new(:indent => 2)
xml = builder.users do |users|
(1..2).each do |user_id|
users.user(:id => user_id) do |u|
u.email("foo")
end
end
end
puts xml
#=>
<users>
<user id="1">
<email>foo</email>
</user>
<user id="2">
<email>foo</email>
</user>
</users>
