A library to help you tame sprawling XML schemas.
nom-xml allows you to define a “terminology” to ease translation between XML and ruby objects – you can query the xml for Nodes or node values without ever writing a line of XPath. nom-xml is built on top of nokogiri decorators, which means you can mix-and-match NOM accessors with nokogiri xpaths, xml manipulation, and traversing and it will just work.
Here are some resources to help you learn more about nom-xml:
- API - A reference to nom-xml's classes
- #projecthydra on irc.freenode.net
- Project Hydra Google Group - community mailing list and forum
<?xml version="1.0"?>
<!-- from http://www.alistapart.com/d/usingxml/xml_uses_a.html -->
<nutrition>
<food>
<name>Avocado Dip</name>
<mfr>Sunnydale</mfr>
<serving units="g">29</serving>
<calories total="110" fat="100"/>
<total-fat>11</total-fat>
<saturated-fat>3</saturated-fat>
<cholesterol>5</cholesterol>
<sodium>210</sodium>
<carb>2</carb>
<fiber>0</fiber>
<protein>1</protein>
<vitamins>
<a>0</a>
<c>0</c>
</vitamins>
<minerals>
<ca>0</ca>
<fe>0</fe>
</minerals>
</food>
</nutrition>require 'nom/xml'
# load the source document as normal
doc = Nokogiri::XML my_source_document
doc.set_terminology do |t|
t.name
t.vitamins do |v|
v.a
v.c
end
t.minerals do |m|
m.calcium :path => 'ca'
m.iron :path => 'fe'
end
end
doc.nom!
doc.name.text == 'Avocado Dip'
doc.minerals.calcium.text == '0'