: In MediaWiki templates how to show empty default value In a MediaWiki template I'm making, I want to let it to become [[CODE-value]] when CODE=value is used and empty when CODE=value is not

@Annie201

Make sure the ParserFunctions extension is installed.

Then put the following in a template, such as Template:Iftest

{{#if: {{{CODE|}}} | [[CODE-{{{CODE}}}]] | (not applicable) }}


If CODE-parameter is empty or not present you get (not applicable). i.e.


{{Iftest|CODE=123}} gives [[CODE-123]]
{{Iftest|CODE=}} gives (not applicable)
{{Iftest}} gives (not applicable)

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