The string-ifempty() function
Smartsite 7.2 - ...
The string-ifempty() extension function returns either the first argument or the second argument when the first argument resolves to null or an empty string.
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string exf:string-ifempty(arg1, arg2) |
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Parameters:
- arg1: A node reference or string literal.
- arg2: A node reference or string literal.
Example
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<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms"
xmlns:exf="http://smartsite.nl/namespaces/xforms/1.0">
<head>
<title>Example</title>
<xf:model>
<xf:instance>
<data xmlns="">
<postcode>2628 XG</postcode>
<text1>Tekst 1</text1>
<empty />
</data>
</xf:instance>
</xf:model>
</head>
<body>
<xf:group ref="/data" appearance="full">
<xf:label />
<xf:output value="exf:string-ifempty('', text1)" />
<xf:output value="exf:string-ifempty(empty, text1)" />
<xf:output value="exf:string-ifempty(empty, 'alternatieve tekst')" />
<xf:output value="exf:string-ifempty(postcode, '(leeg)')" />
</xf:group>
</body>
</html>
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The result will be:
Tekst 1
Tekst 1
alternatieve tekst
2628 XG
Namespace
This function is available within the Smartsite XForms namespace (http://smartsite.nl/namespaces/xforms/1.0).