How do I move nodes in XML using Nokogiri?
I want to move nodes in nokogiri to a parent.
I have this:
<root>
<resource>
<photo_1>
<photo_url>
img_src
</photo_url>
</photo_1>
<adress>
c/street ...
</adress>
</resource>
<resource>
<photo_1>
<photo_url>
img_src
</photo_url>
</photo_1>
<adress>
c/street ...
</adress>
</resource>
...
What I want to achieve for each node is:
<resource>
<photo_url>
img_src
</photo_url>
<adress>
c/street ...
</adress>
</resource>
h1 = @doc.at_css "photo_url"
div = @doc.at_css "resource"
h1.parent=div
With this code it only does the first node but not the other I also tried with:
@doc.xpath('//resource').each do |node|
h1 = node.at_css "pho开发者_StackOverflow中文版to_url"
div = @doc.at_css "resource"
h1.parent=div
end
But doesn't work.
Here's how I'd do it. Using your XML:
xml = <<EOT
<root>
<resource>
<photo_1>
<photo_url>
img_src
</photo_url>
</photo_1>
<adress>
c/street ...
</adress>
</resource>
<resource>
<photo_1>
<photo_url>
img_src
</photo_url>
</photo_1>
<adress>
c/street ...
</adress>
</resource>
</root>
EOT
Here's the code:
require 'nokogiri'
doc = Nokogiri::XML(xml)
doc.search('photo_url').each do |n|
n.parent.replace n
end
puts doc.to_xml
The output looks like:
>> <?xml version="1.0"?>
>> <root>
>> <resource>
>> <photo_url>
>> img_src
>> </photo_url>
>> <adress>
>> c/street ...
>> </adress>
>> </resource>
>>
>> <resource>
>> <photo_url>
>> img_src
>> </photo_url>
>> <adress>
>> c/street ...
>> </adress>
>> </resource>
>> </root>
This will do it:
doc = Nokogiri::XML(xml)
doc.xpath('//photo_url').each do |photo|
old_parent = photo.xpath('ancestor::*[1]').first
resource = photo.xpath('ancestor::resource').first
photo.parent = resource
old_parent.remove
end
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