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xmlxml-twig

Using XML::TWIG, how to remove attribute in only one element

I have an xml looking like this:

<first id="1">
 <second id="1">test</second>
 <second>
  <third id="4">test</third>
 </second>
 <second id="3">test</second>
</first>

and I would like to remove the "id" attribute but only in the "first" element. Using XML::TWIG, i did this:

$twig->parsefile('test.xml');
my ($model) = $twig->first_elt('first[@id]');
$model->strip_att('id');

The problem is, it removes the "id" attributes in all the element, not just "first", so the final file looks like this:

<first>
 <second>test</second>
 <second>
  <third>test</third>
 </second>
 <second>test</second>
</first>

instead of this:

<first>
 <second id="1">test</second>
 <second>
  <third id="4">test</third>
 </second>
 <second id="3">test</second>
</first>

Any suggestions?

Solution

  • I think that you must use del_att($att) instead of strip_att($att), on documentation you can see this explanation:

    strip_att ($att) :

    Remove the attribute $att from all descendants of the element (including the element)

    del_att ($att):

    Delete the attribute for the element.

    So in your code:

    $twig->parsefile('test.xml');
my ($model) = $twig->first_elt('first[@id]');
$model->del_att('id');

    Hope this helps