category Handler/Numbered

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This is the {{ category handler/numbered }} sub-template.

Do not use this template directly, use {{ category handler }} instead. This template is called from {{ category handler }}, see user documentation there.

The rest of the sections here are only for those that want to understand the internal workings of this template.

Technical details

This sub-template makes it possible for its parent-template to take input in two forms:

{{category handler | 1 = Input | main = 1 | talk = 1    }}  {{category handler | main = Input1 | talk = Input2    }} 

This sub-template takes a bunch of numbered parameters. There's no limit to the number of parameters it can use, other than what the servers and MediaWiki system can handle.

It also takes a parameter named data. If data is a number, then it returns the data of the corresponding numbered parameter. If data is something else, for instance a category name, then it returns data unchanged.

Here's how you would normally call this sub-template:

{{category handler/numbered | 1 = {{{1|}}} | 2 = {{{2|}}} | 3 = {{{3|}}} | 4 = {{{4|}}} | data = Input can be a number between 1-4, or something else. }} 

In the above example, since the parent-template feeds only 1-4, then only the numbers 1-4 will work properly. Feeding other numbers will return an empty string.

See also

• mw:Help:Extension:ParserFunctions – About {{#iferror:||}} etc.