"choose when" with variables XSLT

Question

I want to set the color of a table row according to the float value ..

....
<xsl:variable name="percent">
<xsl:value-of select="float(PercentageValue)" />
</xsl:variable>
<xsl:variable name="color">
<xsl:choose>
<xsl:when test="$PercentageValue &ge; 75.0">green</xsl:when>
<xsl:when test="$PercentageValue &lt; 75.0 and $PercentageValue &ge; 50.0">orange</xsl:when>
<xsl:otherwise>red</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<tr bgcolor="$color">
....

what i want is ..

if(percent>=75)
tableRowColor=green;
else if(percent>=50.0 && percent <75.0)
tableRowColor=orange;
else
tableRowColor=red;

Im relatively new to XSLT syntax .. what is the problem present above? Help appreciated!

Edit 1: Sorry a typo while copy pasting for the variable being $PercentageValue Here is what ive done now ..

....
<xsl:variable name="PercentageValue">
        <xsl:value-of select="number(percent)" />
    </xsl:variable>
    <xsl:variable name="color">
        <xsl:choose>
            <xsl:when test="$PercentageValue &gt;= 75.0">green</xsl:when>
            <xsl:when test="$PercentageValue &lt; 75.0 and $PercentageValue &gt;= 50.0">orange</xsl:when>
            <xsl:otherwise>red</xsl:otherwise>
        </xsl:choose>
    </xsl:variable>
<tr bgcolor="$color">
.....

Now i do get the colors but all are black ..why so?

Here is how im displaying Percentage values are at the end .. which is selected in a td for that tr so it does get displayed .. actually the whole xml and xsl are dynamically generated via java, therefore there is alot of precision(double) over there . .does that cause a problem?

Answer 1

There are a couple of issues:

• Your variable is assigned as percent but you reference $PercentageValue
• Convert a number using the number() function
• And use gt;= and lt; for comparisons

Try this:

<xsl:template match="/xml">
    <xsl:variable name="PercentageValue">
        <xsl:value-of select="number(PercentageValue)" />
    </xsl:variable>
    <xsl:variable name="color">
        <xsl:choose>
            <xsl:when test="$PercentageValue &gt;= 75.0">green</xsl:when>
            <xsl:when test="$PercentageValue &lt; 75.0 and $PercentageValue &gt;= 50.0">orange</xsl:when>
            <xsl:otherwise>red</xsl:otherwise>
        </xsl:choose>
    </xsl:variable>
    <TheColorIs>
        <xsl:value-of select="$color"/>
    </TheColorIs>
</xsl:template>

On this Xml:

<xml>
    <PercentageValue>77</PercentageValue>
</xml>

As an aside, instead of creating lots of variables and imperatively 'switching' using xsl:if or xsl:choose / xsl:when, remember that you can also use template filtering to apply matching:

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

    <xsl:template match="/xml/PercentageValue[number() &gt;= 75]">
        <color>green</color>
    </xsl:template>

    <xsl:template match="/xml/PercentageValue[number() &lt; 75.0 and number() &gt;= 50.0]">
        <color>orange</color>
    </xsl:template>

</xsl:stylesheet>