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Simple XSLT Question

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Wickersty

Wickersty

Programmer
Nov 13, 2002
51
US
Sorry to ask this. I'm new at creating XSLT's, and I just want to get this simple task to work. :) I've rewritten my "XML" and "XSLT" in really dumbed down, simple structure below. My Question follows...

Here's my XML:

<examview>
<question>
<text>
This is a question.
<data>19903</data>
</text>
</question>
</examview>

Here is my XSLT:

<xsl:template match=&quot;examview&quot;>
<html>
<body>

<xsl:apply-templates/>

</body>
</html>
</xsl:template>

<xsl:template match=&quot;question&quot;>
<xsl:value-of select=&quot;text&quot;/>
</xsl:template>

Here is my Question:

Upon output, I get:

&quot;This is a question.19903&quot;

How do I get it so that only &quot;This is a question.&quot; will be output, and the information within <data> (&quot;19903&quot;) does not get output?

Thanks, and I know this is a complete newb question - but I just want to get on the right track here.

Jeff
 
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Don't nest the tags, Use:

Code: 
<examview>
     <question>
          <text>
          This is a question.
          </text>
          <data>19903</data>
     </question>
</examview>

Instead.
 
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What if it's too late. I've got a bunch of XML files that set the tags up like that... with:

<question>
<text>
This is the question.
<data>Some Data</data>
</text>
</question>

I don't really have the option of changing them so they are not nested. Is it impossible to display the contents of <text> but not the contents of <data> as I have it now?

Jeff
 
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USe the substring-before() function to return the part of the value before the <data>:
[tt]
<xsl:template match=&quot;examview&quot;>
<html>
<body>

<xsl:apply-templates/>

</body>
</html>
</xsl:template>

<xsl:template match=&quot;question&quot;>
<xsl:value-of select=&quot;substring-before(text,text/data)&quot;/>
</xsl:template>
[/tt]
 
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That sounds like it would do it - however, it doesn't work as entered. Says: &quot;Keyword xsl:variable may not be used in namespace&quot;

Are you sure its okay as is? I went online and did some research into the substring-before function. However, all the sites just say what it does and don't show it in an example.

I feel like I'm so close, but can't quite get it working.

Thanks for all the help folks,

JEff
 
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Here's What I have -

XML File:
Code: 
<?xml version=&quot;1.0&quot; encoding=&quot;ISO-8859-1&quot;?>
<?xml-stylesheet type=&quot;text/xsl&quot; href=&quot;examqn.xsl&quot;?>
<examview>
     <question>
          <text>
          This is a question.
          <data>19903</data>
          </text>
     </question>
</examview>

XSL File:
Code: 
<?xml version=&quot;1.0&quot; encoding=&quot;ISO-8859-1&quot;?>
<xsl:stylesheet version=&quot;1.0&quot;
xmlns:xsl=&quot;[URL unfurl="true"]http://www.w3.org/1999/XSL/Transform&quot;>[/URL]
<xsl:template match=&quot;examview&quot;>
     <html>
     <body>

     <xsl:apply-templates/>

     </body>
     </html>
</xsl:template>

<xsl:template match=&quot;question&quot;>
     <xsl:value-of select=&quot;substring-before(text,text/data)&quot;/>
    
</xsl:template>

</xsl:stylesheet>

Works for me (IE 6, Win2K)
 
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OK. Great. That does work! Thank you.

One more question, if I may:

Your solution works if all of my <question> tags have a <data> tag within it. However, if only SOME of my <question> tags have <data> tags, and others don't, what happens is those <question> tags that DO HAVE <data> tags display properly (that is, the <question> content is displayed but not the <data> content.) However, for those <question> tags that DO NOT have <data> tags within them, nothing at all is displayed.

Picture this XML, to get a better idea:

<examview>
<question>
<text>
This is a question.
<data>19903</data>
</text>
</question>
<question>
<text>
This is a question.
</text>
</question>
</examview>

The output I get is: &quot;This is a question.&quot; In other words, the first one is outputted, but the second one isn't (because there's no <data> tags within the <text> tags. Is there some way to use an &quot;if&quot; function to see IF there is a data tag, and if there IS one, use the substring-before fuction? But if there isnt one, just to use a regular <xsl:value-of select=&quot;text&quot;> statement?

Thanks for all your help.

Jeff

 
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UPDATE: I've read that the <xsl:if> function really doesn't do IF-ELSE. However, there's an <xsl:choose> function that might simulate IF-ELSE, or there's an contains(baseString,substring) function that may check to see if the <text> contains the <data>.

But - Im having trouble figuring out how these would work.

Thanks,

Jeff
 
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<xsl:template match=&quot;question&quot;>
<xsl:apply-templates select=&quot;text() |* [not(self::data)]&quot;/>
</xsl:template>
 
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Awesome! Took a litte tweaking to find the right XPath (my &quot;real&quot; XML doc is a bit more complex than the dummy one I provided in this thread), but this did it. Thanks SO much muligh! I really appreciate it.

Now - let me ask you one final question:

Let's say that: <xsl:apply-templates select=&quot;text() |* [not(self::data)]&quot;/>

returns no output at all... for instance, the XML code was:

<question>
<text>
<data>This is some data.</data>
</text>
</question>

The result of a <xsl:apply-templates select=&quot;text() |* [not(self::data)]&quot;/> would be NOTHING.

Is there a way I can use an <xsl:if> tag to determine if no output is made, and if so, provide some text. I.E., if, in the above example, nothing gets outputted, I would want my XSLT to display: &quot;There is no TEXT available.&quot;

Thanks again,

Jeff
 
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Yeah, sorry the code I gave you needed to be tweaked. I think the following should work for you.

<?xml version=&quot;1.0&quot;?>
<xsl:stylesheet xmlns:xsl=&quot; version=&quot;1.0&quot;>
<xsl:eek:utput method=&quot;html&quot;/>
<xsl:strip-space elements=&quot;*&quot;/>
<xsl:template match=&quot;examview&quot;>
<html>
<body>

<xsl:apply-templates/>

</body>
</html>
</xsl:template>

<xsl:template match=&quot;question&quot;>
<xsl:choose>
<xsl:when test=&quot;string-length(text) != string-length(text/data)&quot;>
<xsl:for-each select=&quot;text&quot;>
<xsl:apply-templates select=&quot;text() | *[not(self::data)]&quot;/>
</xsl:for-each>
</xsl:when>
<xsl:eek:therwise>
<xsl:text>There is no text data</xsl:text>
</xsl:eek:therwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
 
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Worked like a charm. Many thanks for your efforts, folks - especially mulligh. I couldn't have done it without your help. Extremely helpful thread, and I appreciate your help.

Jeff
 
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