XPATH problem

Hi,

I have an xml file which holds the information for pages in a cms. I want to allow users to update meta descriptions on a page by page basis, someone on here told me about using xpath. Unfortunately i haven't been able to get it to work.

The xml is simple and looks like this:

<pages>
<page id="index">
<filename>index</filename>
<pagename>Welcome</pagename>
<pagearea>home</pagearea>
<template>homepage</template>
<keywords/>
<description/>
<order>2</order>
</page>
</pages>

Can anyone see why this might not work?

$doc = new DomDocument;
$doc->preserveWhiteSpace = false;
$myFile = "../preview/nav.xml";
$doc->load($myFile);
$xpath = new domxpath($doc);
$description = $xpath->query("/pages/page[@id='$filelist']/filename");
$description->textContent = $_POST['description'];
$doc->save($myFile);

Thanks in advance.

Cheers, Will

 

try starting your query string with a double slash instead of a single slash

if not,
what errors are you getting?
what doesn't work? (try debugging)
what is the $filelist var?

 

Thanks for the reply.

It doesnt give me any error messages, but it doesnt save the xml either. The variable i pass through is the id of the page, posted from a previous form when picking the page to edit. Im all out of ideas!

Cheers, Will

 

Is the problem solved? If not try adding double ccs hash at the end.

 

ok, i think i found your problem.
the $xpath->query() returns DOMNodeList, not DOMElement, so $description doesn't have a "textContent" property.

this worked for me:

<?php

$doc = new DomDocument();
$doc->preserveWhiteSpace = false;
$doc->loadXML(<<<XML
<pages>
<page id="index">
<filename>index</filename>
<pagename>Welcome</pagename>
<pagearea>home</pagearea>
<template>homepage</template>
<keywords/>
<description/>
<order>2</order>
</page>
</pages>
XML
);

$xpath = new DOMXPath($doc);
$description = $xpath->query("//pages/page[@id='index']/description");
$description->item(0)->nodeValue = 'new description';
echo $doc->saveXML();

?>

PHP:

 

Fantastic! You have saved the day.

You rock man!