Template:Qif
{{{else{{{test|}}}|{{{test{{{test|}}}|{{{then|}}}}}}}}}
Template documentation[view] [edit] [history] [purge]Template:Qif formerly implemented an "if" function, which is now implemented by the parser function {{#if}}.
Purpose and function
Provides if then else functionality.
- Parameter else is optional.
- This template has undefined behaviour, if parameter test or then (or both) are missing.
- This template also has undefined behaviour, if any parameter (be it named or unnamed) that is different from test, then or else is defined when calling the template.
Note that {{qif}} does not work when subst'ed (like {{ifndef}}, the then part alone as in {{ifdef}} can be substituted).
Of course it's impossible to use vertical bars in parameter values directly, use either | or Template:! – the latter is only relevant for wiki table delimiters.
Wikipedia CTO Brooke Vibber expressed support to implement the functionality of qif into MediaWiki; this became {{#if}}.
Usage
{{Qif
|test=VARIABLE_OR_PARAMETER_TO_TEST
|then=code if 'test' is not empty
|else=code if 'test' is empty
}}
Parameter else is optional. So this was also possible:
{{Qif
|test=VARIABLE_OR_PARAMETER_TO_TEST
|then=code if 'test' is not empty
}}
Examples
| Code | Result |
|---|---|
{{Qif
|test={{boolne|foo|bar}}
|then=true
|else=false
}}
|
true |
{{Qif
|test={{booleq|foo|bar}}
|then=true
|else=false
}}
|
false |
{{Qif
|test=
|then=bar
}}
|
|
{{Qif
|test=foo
|then=bar
}}
|
bar |
See also
- Template:Switch( talk links history)
- Template:If ( · talk · links · history) at Meta explains "undefined" cases
- Template:Ifdef ( · talk · links · history) at Meta allows substitution
- Category:If-then-else templates
- Help:Conditional tables
- ParserFunctions