Looking for XSLT loop that doesn't produce xmlns="" attribute.

**awasson** · Jan 3, 2005 19:56

How's that for a title?

This non-critical problem has been driving me a bit nuts ever since I started using XML/XSLT for the creation of dynamic sites.

I am trying to produce valid XHTML Transitional sites dynamically, but whenever I run a loop in my XSLT, it generates xmlns="" within certain elements like list items resulting in <li id="some value" xmlns="">some value</li>.

I would like to see: <li id="some value">some value</li>

Has anyone else had this experience and/or figured out how to be rid of it.

The following is some sample XML/XSL that you can use if you feel so inclined.

Cheers and thanks,
Andrew

XML

Code:

<?xml version="1.0" encoding="iso-8859-1"?>
       <?xml-stylesheet type="text/xsl" href="test.xsl"?>
       <SITEMAP>
    	   <!-- START PRIMARY NAVIGATION -->
    	   <CATEGORY TITLE="Primary" ID="primaryNavigation">
    		   <PAGE ID="1" TITLE="Homepage" HYPERTEXT="Home" />
    		   <PAGE ID="2" TITLE="About Us" HYPERTEXT="About" />
    		   <PAGE ID="3" TITLE="Contact" HYPERTEXT="Contact" />
    		   <PAGE ID="4" TITLE="Articles" HYPERTEXT="Articles" />
    		   <PAGE ID="5" TITLE="Tools" HYPERTEXT="Tools" />
    		   <PAGE ID="6" TITLE="Links" HYPERTEXT="Links" />
    	   </CATEGORY>
    	   <!-- END PRIMARY NAVIGATION -->
       </SITEMAP>

XSL

Code:

<?xml version="1.0" encoding="iso-8859-1"?>
       
       <!-- Stylesheet Specifications Begin-->
       <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
       
 <xsl:output omit-xml-declaration="yes" indent="yes" doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN" doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd" />
       
       <xsl:param name="param3" /> <!--baseURL-->
       <xsl:param name="param4" /> <!--pageURL-->
       
       <xsl:template match="/">
       <html xmlns="http://www.w3.org/1999/xhtml">
       <head>
       <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
       <title>Test Page</title>
       </head>
       <body>
       <!-- Primary Navigation Items -->
    	 <div id="navcontainer">
    	   <ul id="navlist">
    		 <xsl:call-template name="primary"/>
    	   </ul>
    	 </div>
       <!-- End Primary Navigation -->
       </body>
       </html>
       </xsl:template>
       
       <xsl:template name="primary">
       <xsl:for-each select="SITEMAP/CATEGORY/PAGE"> 
    	 <xsl:element name="li">
    	   <xsl:attribute name="id"><xsl:value-of select="@HYPERTEXT" /></xsl:attribute>
    		 <xsl:element name="a">
 			 <xsl:attribute name="href">#</xsl:attribute>
    			 <xsl:attribute name="title">
    			   <xsl:value-of select="@TITLE"/>
    			 </xsl:attribute>
    			 <xsl:value-of select="@HYPERTEXT"/>
    		 </xsl:element>
    	   </xsl:element>
       </xsl:for-each>   
       </xsl:template>
       
       </xsl:stylesheet>
       <!-- Stylesheet Specifications End-->

**vgarcia** · Jan 4, 2005 06:16

Can you show an example of what your XSL file outputs?

Also, have you tried using the exclude-result-prefixes attribute on your stylesheet? Example:

HTML Code:

 <xsl:stylesheet 
version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
exclude-result-prefixes="html">
<!--this exclude value excludes the html namespace (xmlns:html) from showing up in the result document.-->
...

**awasson** · Jan 4, 2005 10:52

Hey Vinnie,

Thanks for the reply. The output is as follows:

Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
 <title>Test Page</title>
 </head>
 <body>
 <div id="navcontainer">
 <ul id="navlist">
 <li id="Home" xmlns="">
 <a href="#" title="Homepage">Home</a>
 </li>
 <li id="About" xmlns="">
 <a href="#" title="About Us">About</a>
 </li>
 <li id="Contact" xmlns="">
 <a href="#" title="Contact">Contact</a>
 </li>
 <li id="Articles" xmlns="">
 <a href="#" title="Articles">Articles</a>
 </li>
 <li id="Tools" xmlns="">
 <a href="#" title="Tools">Tools</a>
 </li>
 <li id="Links" xmlns="">
 <a href="#" title="Links">Links</a>
 </li>
 </ul>
 </div>
 </body>
 </html>

As you can see each <li> item has an xmlns="" attribute. I changed my stylesheet tag as indicated in your post to:
<xsl:stylesheet version="1.0"
xmlns

sl="http://www.w3.org/1999/XSL/Transform"
exclude-result-prefixes="html">

but it resulted in an error:
ERROR: Description: Reference to undeclared namespace prefix: 'html'.

Any other tips would be great.

Thanks,
Andrew

**vgarcia** · Jan 4, 2005 13:57

I think the problem is that you're using xsl:element rather than the literal element. Change this:

HTML Code:

<xsl:element name="li">
    	   <xsl:attribute name="id"><xsl:value-of select="@HYPERTEXT" /></xsl:attribute>
    		 <xsl:element name="a">
 			 <xsl:attribute name="href">#</xsl:attribute>
    			 <xsl:attribute name="title">
    			   <xsl:value-of select="@TITLE"/>
    			 </xsl:attribute>
    			 <xsl:value-of select="@HYPERTEXT"/>
    		 </xsl:element>
    	   </xsl:element>

To this:

HTML Code:

<li>
    	   <xsl:attribute name="id"><xsl:value-of select="@HYPERTEXT" /></xsl:attribute>
    		 <a>
 			 <xsl:attribute name="href">#</xsl:attribute>
    			 <xsl:attribute name="title">
    			   <xsl:value-of select="@TITLE"/>
    			 </xsl:attribute>
    			 <xsl:value-of select="@HYPERTEXT"/>
    		 </a>
    	  </li>

See if that helps

**awasson** · Jan 4, 2005 14:10

Thanks Vinnie,
I was hoping that was it but....
Sadly I'm getting the same results I was getting with the xsl:element. I just checked with both MSXMLDOM (ASP) and Cooktop 2.5 and the results are that same.

This is a strange one isn't it?

Thanks for the advice,
Andrew

**rich_gib** · Jan 5, 2005 11:43

hi,
had the same problem recently, really simple the xml namespace is declared in the <xsl: output> tag and the <html> tag. take the xmlns attribute out of the html tag and it should be fine

**awasson** · Jan 5, 2005 11:58

Hi rich_gib,

That definitely removed the empty xmlns attribute but... In order for the page to validate as xhtml the <html> tag has to contain the namespace.

It's a good riddle but there must be a way to do this.

Thanks... That almost gets me where I want to go.

Cheers,
Andrew

**rich_gib** · Jan 6, 2005 13:55

thats strange, the xslt engine for php5 generated the namespace automatically in the html tag when i removed it

ie. this

Code:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
	<xsl:output method="xml" indent="yes" encoding="UTF-8"/>
	<xsl:output omit-xml-declaration="yes"
				doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN"
				doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"/>
		<html>

is transformed to

Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

**awasson** · Jan 7, 2005 11:31

Ok,

I did a little bit more messing around with the processors to see if I can replicate what you're seeing in PHP5.

I'm porting my app to work on .NET, ASP and PHP4 to begin with and them maybe later to others. I don't have PHP5 loaded so I couldn't check but here's what I found.

As you pointed out (rich_gib), removing xmlns="http://www.w3.org/1999/xhtml" from the <html> tag fixes the issue of having xmlns="" appearing throughout the generated code. However, in most cases I still end up with invalid markup because xmlns="http://www.w3.org/1999/xhtml" is not put back into the <html> tag during XSLT processing.

I've tried processing with MSXML, MSXML 3.0, MSXML 4.0 and .NET and in all cases xmlns="http://www.w3.org/1999/xhtml" is not added back to the <html> tag.

On the PHP4 front it's a little more interesting. I found that if I use DOMXML (experimental in PHP4) ie:

PHP Code:


   $xmldoc = domxml_open_file("test.xml");
    $xsldoc = domxml_xslt_stylesheet_file ("test.xsl");
    $result = $xsldoc->process($xmldoc);
    print $result->dump_mem();

xmlns="http://www.w3.org/1999/xhtml" is added back to the <html> tag

However, using PHP_XSLT ie:

PHP Code:


$xsltproc = xslt_create();  
       $html = xslt_process($xsltproc, 'arg:/_xml', $xsl_file, NULL, $arguments);

Doesn't add it back.

So... I don't think I can rely on the processor to add it back. Any thoughts about removing it from the stylesheet and then adding it back through XSL during the transformation?

I haven't given it much thought but it occured to me as I was writing this that it may be possible.

Thanks,
Andrew

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