Transitioning from Scrubyt to Nokogiri- Write to XML or Hash? - ruby-on-rails

Question

I'm trying to transition this bit of code from scrubyt to nokogiri, and am stuck trying to write my results to either a hash or xml. In scrubyt it looks like the following:
require 'rubygems'
require 'scrubyt'
result_data = Scrubyt::Extractor.define do
fetch "http://www.amazon.com/gp/offer-listing/0061673730"
results "//div[#class='resultsset']" do
item "//tbody/tr" do
condition "//div[#class = 'Condition']"
price "//span[#class = 'price']"
shipping "//span[#class = 'price_shipping']"
end
end
end
#description = result_data.to_xml
return #description
end
With nokogiri I can parse out the information I want, but there doesn't seem to be a quick way to return items in a hash or xml document. Here's all I have in nokogiri.
require 'rubygems'
require 'nokogiri'
require 'open-uri'
doc = Nokogiri::HTML(open('http://www.amazon.com/gp/offer-listing/0061673730'))
doc.css('div.condition, span.price, span.price_shipping ').each do |item|
puts item.content
end
How would one return item information to either xml or a hash?

Answer 1

You can use the Builder to build XML.
builder = Nokogiri::XML::Builder.new do |xml|
xml.root {
xml.items {
doc.css('div.condition, span.price, span.price_shipping').each do |o|
xml.item_content = o
end
}
}
end
puts builder.to_xml

Answer 2

Figured it out...
require 'rubygems'
require 'nokogiri'
require 'open-uri'
doc = Nokogiri::HTML(open('http://www.amazon.com/gp/offer-listing/0061673730'))
builder = Nokogiri::XML::Builder.new do |xml|
xml.root {
doc.xpath('//tbody[#class="result"]').each do |res|
xml.result {
res.css('span.price').each do |p|
xml.price = p.content
end
res.css('span.price_shipping').each do |s|
xml.ship = s.content
end
}
end
}
end
puts builder.to_xml
Results:
<?xml version="1.0"?>
<root>
<result>
<price=>$6.09</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$6.48</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$7.12</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$7.31</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$7.52</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$7.52</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$11.53</price=>
</result>
<result>
<price=>$7.56</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$7.61</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$7.61</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$7.95</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$7.95</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$8.59</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$8.99</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$10.05</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$10.32</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$10.32</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$10.55</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$10.56</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$11.42</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$11.59</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$11.90</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$11.95</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$12.07</price=>
<ship=>+ $3.99</ship=>
</result>
<result>
<price=>$12.35</price=>
<ship=>+ $3.99</ship=>
</result>
</root>

Answer 3

Thanks! That's exactly what I need. I'm having trouble looping correctly, though.
require 'rubygems'
require 'nokogiri'
require 'open-uri'
doc = Nokogiri::HTML(open('http://www.amazon.com/gp/offer-listing/0061673730'))
builder = Nokogiri::XML::Builder.new do |xml|
xml.root {
xml.item {
doc.css('span.price').each do |o|
xml.price = o
doc.css('span.price_shipping').each do |o|
end
end
}
}
end
puts builder.to_xml
That returns this:
<?xml version="1.0"?>
<root>
<item>
<price=><span class="price">$6.09</span></price=>
<price=><span class="price">$6.48</span></price=>
<price=><span class="price">$11.95</span></price=>
<ship=><span class="price_shipping">+ $3.99</span></ship=>
<ship=><span class="price_shipping">+ $3.99</span></ship=>
<ship=><span class="price_shipping">+ $3.99</span></ship=>
</item>
</root>
How would I rewrite my code to return something like this:
<?xml version="1.0"?>
<root>
<item>
<price=><span class="price">$6.09</span></price=>
<ship=><span class="price_shipping">+ $3.99</span></ship=>
</item>
<item>
<price=><span class="price">$6.48</span></price=>
<ship=><span class="price_shipping">+ $3.99</span></ship=>
</item>
<item>
<price=><span class="price">$11.95</span></price=>
<ship=><span class="price_shipping">+ $3.99</span></ship=>
</item>
</root>

Answer 4

you may want to omit "=" in
xml.price = p.content