How to test if parameter exists
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I assume that you expect a GET parameter like in http://example.com/?hello=true
.
Test if it exists:
<xsl:if test="/data/params/url-hello"> … </xsl:if>
Test if it has a non-empty value:
<xsl:if test="normalize-space(/data/params/url-hello)"> … </xsl:if>
The same works for Symphony's URL params (but they won't be prefixed with url-
like the GET parameters).
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How can i test if a param passed by url exist or not ?