This is the } template.
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This template is used inside other templates. It takes any number of parameters and returns the first found to be defined and non-empty. If none is found, nothing is returned. Typical usage is like this:
{{If empty |{{{logo|}}} |{{{image|}}} |{{{picture|}}} |default.svg}}
This returns the first of the parameters logo, image and picture that is defined and non-empty, otherwise "default.svg".
The MediaWiki parameter default function doesn't return the default value for empty parameters. That is, {{{logo|default.svg}}}
does not return "default.svg" if the template was called like this: {{template|logo=}}
.
The usual workaround for a single parameter is:
{{#if:{{{logo|}}} |{{{logo}}} |default.svg}}
But this becomes complex when several parameters are to be checked:
{{#if:{{{logo|}}} |{{{logo}}} |{{#if:{{{image|}}} |{{{image}}} |{{#if:{{{picture|}}} |{{{picture}}} |default.svg}} }} }}
In these cases, {{if empty}} produces the simpler syntax (as above):
{{if empty |{{{logo|}}} |{{{image|}}} |{{{picture|}}} |default.svg}}
Parameters used with {{if empty}} must be piped – i.e. include the vertical bar (pipe) symbol (" | ") as a trailing character – so that empty or undefined parameters aren't treated as text and returned incorrectly. Hence, for example, {{{logo|}}}
, {{{image|}}}
and {{{picture|}}}
rather than {{{logo}}}
, {{{image}}}
and {{{picture}}}
in the above examples.
Code | Result | |
سانچو:Tc | Returns an empty string. | |
سانچو:Tc | one | Returns the first parameter that is defined and not empty. |
سانچو:Tc | one | |
سانچو:Tc | one | |
سانچو:Tc | two | The first parameter is empty/undefined, so is passed over. |
سانچو:Tc | two | |
سانچو:Tc | two | |
{{if empty||||||||||ten}} | ten | Unlike in previous versions, this template is no longer limited by 9 parameters. |
سانچو:Tc | The only parameter is empty or undefined, so returns an empty string. | |
سانچو:Tc | Returns an empty string. | |
{{if empty|{{{1|}}}|{{{2|}}}|three}} | three | |
{{if empty|{{{1}}}|{{{2}}}|three}} | {{{1}}} | No pipe-characters following the names of the first two parameters ("1" and "2"), so the first of these returned as text ("{{{1}}}"). |
{{if empty|{{{logo|}}}|two}} | two | |
{{if empty|{{{logo}}}|two}} | {{{logo}}} | No pipe-character following the parameter name "logo", so the text "{{{logo}}}" returned. |
{{if empty|p=q}} | The template identifies the parameters it receives as parameters 1 to 9, not using names such as "p", etc. |
مٿي ڏنل دستاويز صفحو سانچو:If empty/دستاويز سان شامل ڪئي ويئي آهي۔ (سنواريو | تاريخچو) يوزر سانچي جي ريتخانو (تخليق | آئينو) ۽ ثابتات (تخليق) ۾ تجربا ڪري سگهن ٿا۔ براه ڪرم /دستاويز جي هيٺين صفحي تي زمرا شامل فرمايو۔ هن سانچو جا هيٺيان صفحا۔ |