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bob bobSubject: Help in creating shopping list
Author: bob bob
Date: 30 Sep 2005 08:26 AM
Hello all,
I'm pretty new to xsl and i am having quite a bit of trouble solving this problem.

I have a number of recipes in one xml document (xml format follows), i need to present a shopping list of all ingredients. This would mean adding up all ingredients qty that are the same, so if there are 2 items in seperate recipes, there should only be one occurance in the shopping list with the combined qty.

<recipeml>
<recipe>
<ingredients>
<ing>
<amt>
<qty>1</qty>
<unit>Kilogram</unit>
</amt>
<item>chocolate</item>
</ing>
<ing>
<amt>
<qty>3</qty>
</amt>
<item>egg</item>
</ing>
</ingredients>
</recipe>
<recipe>
<ingredients>
<ing>
<amt>
<qty>0.5</qty>
<unit>Kilograms</unit>
</amt>
<item>Chocolate</item>
</ing>
<ing>
<amt>
<qty>2</qty>
</amt>
<item>egg</item>
</ing>
<ing>
<amt>
<qty>1</qty>
<unit>Kilograms</unit>
</amt>
<item>Chicken</item>
</ing>
</ingredients>
</recipe>
</recipeml>


So the result from that sample would be something like
3 kilogram chocolate
5 egg
1 kilogram chicken

Any help on this would be most apreciated.

Thanks in advance
Postnext
Ivan PedruzziSubject: Help in creating shopping list
Author: Ivan Pedruzzi
Date: 30 Sep 2005 02:11 PM
The following assumes that ingredient names are spell the same, that's not the case in your sample ( chocolate / Chocolate ).


<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text"/>
<xsl:key name="ingredients" match="recipeml/recipe/ingredients/ing" use="item"/>

<xsl:template match="/">
<xsl:for-each select="recipeml/recipe/ingredients/ing[generate-id() = generate-id(key('ingredients', item)[1])]">
<xsl:value-of select="concat(sum(key('ingredients', item)/amt/qty), ' ', amt/unit, ' ', item, '&#10;')"/>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>

Ivan Pedruzzi
Stylus Studio Team

Posttop
bob bobSubject: Help in creating shopping list
Author: bob bob
Date: 30 Sep 2005 09:31 PM
Thanks,
Works perfectly.

its exactly what i was after.

Thanks again.
   
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