使用 Nokogiri::XML::Builder 追加元素 [英] Append elements using Nokogiri::XML::Builder

问题描述

我有以下代码:

builder = Nokogiri::XML::Builder.new(:encoding => 'UTF-8') do |xml|
  xml.myRoot do |xml|
    xml.oneChild
    xml.anotherChild
  end
end

现在我想使用构建器将一些子节点附加到 myRoot(在第二步中，我知道如何立即附加它们).我该怎么做?

我已经试过了:

node = builder.doc.xpath('//myRoot/oneChild').first
Nokogiri::XML::Builder.with(node) do |xml|
  xml.childOfOneChild 'Im a child of oneChild'
end

这行不通.他们不会粘在元素上，它只是一个空的 oneChild.

Which doesn't work. They won't stick to the element, it's just an empty oneChild.

推荐答案

您的代码生成以下 XML，它似乎符合您的规范.无论如何，它不会产生一个空的oneChild.如果这不是您想要的，您能告诉我们您的理想输出是什么吗?:

Your code produces the following XML, which seems to meet your specifications. It doesn't produce an empty oneChild, at any rate. If this isn't what you're looking for, can you tell us what your ideal output would be?:

builder = Nokogiri::XML::Builder.new(:encoding => 'UTF-8') do |xml|
  xml.myRoot do |xml|
    xml.oneChild
    xml.anotherChild
  end
end

puts builder.to_xml

# <?xml version="1.0" encoding="UTF-8"?>
# <myRoot>
#   <oneChild/>
#   <anotherChild/>
# </myRoot>   

node = builder.doc.xpath('//myRoot/oneChild').first
Nokogiri::XML::Builder.with(node) do |xml|
  xml.childOfOneChild 'Im a child of oneChild'
end

puts builder.to_xml

# <?xml version="1.0" encoding="UTF-8"?>
# <myRoot>
#   <oneChild>
#     <childOfOneChild>Im a child of oneChild</childOfOneChild>
#   </oneChild>
#   <anotherChild/>
# </myRoot>

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