CODEWITHSUNDEEP
xmlxpathnokogiri
AdamB
AdamB

Reputation: 3121

Don't go into element tree in xpath

I have some XML that looks like

<page id="1">
  <subpages>
   <page id="2">
    <subpages>
      <page id="3">
    </subpages>
   </page>
   <page id="4"></page>
   <page id="5"></page>
  </subpages>
</page>

What I'm trying to do is pull out the top level <page> in the top <subpages> tag meaning I'm trying to pull out pages 2, 4, and 5, but not 3.

Right now I'm doing //subpages[1]/page but this gets all the pages inside of the first subpages tag. Is there a way to do this?

I'm able to do this in jQuery with

var c = $(data).find("subpages").first();
$(c).children("page").each(function() {});

If I can't get a proper xpath to work, is there a way to make Nokogiri behave like jQuery does?

Upvotes: 0

Views: 71

Answers (2)

Mark Thomas
Mark Thomas

Reputation: 37517

The equivalent of your jQuery would be:

doc.at('subpages').xpath('page').each do |page|
    puts page.attr('id')
end

Result:

2
4
5

Upvotes: 0

Daniel Haley
Daniel Haley

Reputation: 52868

The simplest way would be:

/*/*/page

More explicitly:

/page/subpages/page

Also, you could've done this (but I try to avoid //):

(//subpages)[1]/page

Upvotes: 1

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