Rails - Jun 2013 - Need to understand the Nokogiri::XML::Builder Class

I was doing some coding to get to be familiarized with `Class
Nokogiri::XML::Builder`.

require ''nokogiri''

items =
[[987,"Coupler",5],[654,"Connector",3],[579,"Clasp",1]]

builder = Nokogiri::XML::Builder.new(:encoding => ''UTF-8'')
do |xml|
  xml.Order {
    items.each do |i|
     xml.Item{
      xml.ItemId i.first
      xml.ItemName i[1]
      xml.Quantity i.last
     }
   end
  }
end
puts builder.to_xml

Output:

<?xml version="1.0" encoding="UTF-8"?>
<Order>
  <Item>
    <ItemId>987</ItemId>
    <ItemName>Coupler</ItemName>
    <Quantity>5</Quantity>
  </Item>
  <Item>
    <ItemId>654</ItemId>
    <ItemName>Connector</ItemName>
    <Quantity>3</Quantity>
  </Item>
  <Item>
    <ItemId>579</ItemId>
    <ItemName>Clasp</ItemName>
    <Quantity>1</Quantity>
  </Item>
</Order>

###############################################

Till now I am done. But really don''t understand the difference between
`context` and `doc` attributes. Can anyone give me some simple examples
to understand these two?

-- 
Posted via http://www.ruby-forum.com/.

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To view this discussion on the web visit
https://groups.google.com/d/msgid/rubyonrails-talk/9665c25787ea0e19a6cb02b47a8650fe%40ruby-forum.com?hl=en-US.
For more options, visit https://groups.google.com/groups/opt_out.