Difference between revisions of "Template:Ifnoteq then show/doc"

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imported>RexxS
(documentation and example)
 
imported>Mike Peel
 
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<includeonly>{{sandbox other||
 
<includeonly>{{sandbox other||
 
<!-- Categories below this line, please; interwikis at Wikidata -->
 
<!-- Categories below this line, please; interwikis at Wikidata -->
 
+
[[Category:If-then-else templates]]
 
}}</includeonly>
 
}}</includeonly>

Latest revision as of 18:57, 3 August 2018

This template tests whether the first unnamed parameter is equal to the second unnamed parameter and returns the third unnamed parameter if it does. Otherwise it returns the first unnamed parameter.

This is useful when the first parameter is a {{#invoke: }} of a Lua module that returns a value for which a specific exception is required. Because it uses the {{#invoke: }} just once, it simplifies the coding of infoboxes, for example.

Usage

An infobox field may return the Lua error in Module:Wd at line 196: attempt to index field 'wikibase' (a nil value). (P17) for an article about a city. We may wish to use the abbreviation "USA" in place of "United States".

Lua error in Module:Wd at line 196: attempt to index field 'wikibase' (a nil value). (P17) for Lua error in Module:Wd at line 196: attempt to index field 'wikibase' (a nil value). (Q42462)
{{#invoke:WikidataIB |getValue |P17 |qid=Q42462 |fwd=ALL |osd=no |rank=best |noicon=true}}
{{Ifnoteq then show|{{#invoke:WikidataIB |getValue |P17 |qid=Q42462 |fwd=ALL |osd=no |rank=best |noicon=true}}|[[United States|United States]]|USA}}
Lua error in Module:Wd at line 196: attempt to index field 'wikibase' (a nil value). (P17) for Lua error in Module:Wd at line 196: attempt to index field 'wikibase' (a nil value). (Q60)
{{#invoke:WikidataIB |getValue |P17 |qid=Q60 |fwd=ALL |osd=no |rank=best |noicon=true}}
{{Ifnoteq then show|{{#invoke:WikidataIB |getValue |P17 |qid=Q60 |fwd=ALL |osd=no |rank=best |noicon=true}}|[[United States|United States]]|USA}}