CODEWITHSUNDEEP
xmlxsltattributes
leif_good
leif_good

Reputation: 386

Change value of an XML attribute via xslt

I have the following xml-file:

<Book description="for beginners" name="IT Book">
    <Available>yes</Available>
    <Info pages="500.</Info>
</Book>

I want it to look like this:

<Book description="for pros" name="IT Book">
    <Available>yes</Available>
    <Info pages="500.</Info>
</Book>

I looked up how to modify xml-documents properly on the internet. I found out that first of all I should declare a template for just copying everything:

<xsl:template match="node() | @*">
    <xsl:copy>
        <xsl:apply-templates select="node() | @*"/>
    </xsl:copy>
</xsl:template>

However, I dont know how to write the template for the actual modification. Thanks for helping out a beginner.

EDIT: Here is my Stylesheet so far (as requested by uL1):

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:sig="http://www.w3.org/2000/09/xmldsig#">
    <xsl:output indent="yes" method="xml" omit-xml-declaration="yes"/>

    <xsl:template match="node() | @*">
        <xsl:copy>
            <xsl:apply-templates select="node() | @*"/>
        </xsl:copy>
    </xsl:template>

    <xsl:template match="@description='for beginners'">
        <xsl:attribute name="{name()}">
            <xsl:text>for pros</xsl:text>
        </xsl:attribute>
    </xsl:template>
</xsl:stylesheet>

Upvotes: 2

Views: 8077

Answers (1)

uL1
uL1

Reputation: 2167

This question is already answered in many other threads. Eg. XSLT: How to change an attribute value during <xsl:copy>?

In your case, you need a template, which matches on your attribute description, besides the identity-copy template.

<xsl:template match="@description"> <!-- @ matches on attributes, possible to restrict! -->
  <xsl:attribute name="{name()}">   <!-- creates a new attribute with the same name -->
    <xsl:text>for pros</xsl:text>   <!-- variable statement to get your desired value -->
  </xsl:attribute>
</xsl:template>

EDIT 1 (further information cause of errors)

One complete, valid, runnable script would be:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

  <xsl:template match="@* | node()">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="@description[. = 'for beginners']">
    <xsl:attribute name="{name()}">
      <xsl:text>for pros</xsl:text>
    </xsl:attribute>
  </xsl:template>

</xsl:stylesheet>

Upvotes: 6

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