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PONokogiri: controlling element prefix for new child elments
 

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    <p>I have an xml document like this:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;foo:root xmlns:foo="http://abc.com#" xmlns:bar="http://def.com" xmlns:ex="http://ex.com"&gt; &lt;foo:element foo:attribute="attribute_value"&gt; &lt;bar:otherElement foo:otherAttribute="otherAttributeValue"/&gt; &lt;/foo:element&gt; &lt;/foo:root&gt; </code></pre> <p>I need to add child elements to the element so that it looks like this:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;foo:root xmlns:foo="http://abc.com#" xmlns:bar="http://def.com" xmlns:ex="http://ex.com"&gt; &lt;foo:element foo:attribute="attribute_value"&gt; &lt;bar:otherElement foo:otherAttribute="otherAttributeValue"/&gt; &lt;bar:otherElement foo:otherAttribute="newAttributeValue"/&gt; &lt;ex:yetAnotherElement foo:otherAttribute="yetANewAttributeValue"/&gt; &lt;/foo:element&gt; &lt;/foo:root&gt; </code></pre> <p>I can add elements in the correct location using the following:</p> <pre><code>require 'rubygems' require 'nokogiri' doc = Nokogiri::XML::Document.parse(File.open("myfile.xml")) el = doc.at_xpath('//foo:element') newEl = Nokogiri::XML::Node.new("otherElement", doc) newEl["foo:otherAttribute"] = "newAttributeValue" el.add_child(newEl) newEl = Nokogiri::XML::Node.new("yetAnotherElement", doc) newEl["foo:otherAttribute"] = "yetANewAttributeValue" el.add_child(newEl) </code></pre> <p>However the prefix of the new elements is always "foo":</p> <pre><code>&lt;foo:root xmlns:foo="http://abc.com#" xmlns:bar="http://def.com" xmlns:ex="http://ex.com"&gt; &lt;foo:element foo:attribute="attribute_value"&gt; &lt;bar:otherElement foo:otherAttribute="otherAttributeValue" /&gt; &lt;foo:otherElement foo:otherAttribute="newAttributeValue" /&gt; &lt;foo:yetAnotherElement foo:otherAttribute="yetANewAttributeValue" /&gt; &lt;/foo:element&gt; &lt;/foo:root&gt; </code></pre> <p>How can I set the prefix on the element name for these new child elements? Thanks, Eoghan</p>
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