Nodyn:If then show/doc

Oddi ar Wicipedia
Jump to navigation Jump to search

This template tests whether the first unnamed parameter is not an empty string and returns it if it is not empty. Otherwise it returns the second unnamed parameter.

This is useful when the first parameter is a {{#invoke: }} of a Lua module that may return a value or nothing. Because it uses the {{#invoke: }} just once, it simplifies the coding of infoboxes, for example.

The optional third and fourth unnamed parameters provide a prefix and a suffix for the first parameter when returned. This enables the designer to construct more complex templates that still only use one invoke of a Lua module.

Usage[golygu cod y dudalen]

priod (P26) for Richard Burton (Q151973)
{{If then show|{{#invoke:WikidataIB|getValue|P26|qid=Q151973|fwd=ALL|osd=no}}|unmarried}}Elizabeth Taylor, Sybil Williams, Suzy Miller, Elizabeth Taylor Edit this on Wikidata
priod (P26) for Franz Kafka (Q905)
{{If then show|{{#invoke:WikidataIB|getValue|P26|qid=Q905|fwd=ALL|osd=no}}|unmarried}} → unmarried

Prefix and suffix[golygu cod y dudalen]

A table can be designed to display a row only when a particular property of the article exists on Wikidata.

priod (P26) for Richard Burton (Q151973)
{| class="wikitable"
|-
! scope="col" style="width:15em;" | Label
! scope="col" style="width:36em;" | Value
{{If then show|{{#invoke:WikidataIB|getValue|P26|qid=Q151973|fwd=ALL|osd=no}}||<tr><th>{{#invoke:WikidataIB|getLabel|P26|qid=Q151973}}</th><td>|</td></tr>}}
|}
Label Value
priodElizabeth Taylor, Sybil Williams, Suzy Miller, Elizabeth Taylor Edit this on Wikidata
priod (P26) for Franz Kafka (Q905)
{| class="wikitable"
|-
! scope="col" style="width:15em;" | Label
! scope="col" style="width:36em;" | Value
{{If then show|{{#invoke:WikidataIB|getValue|P26|qid=Q905|fwd=ALL|osd=no}}||<tr><th>{{#invoke:WikidataIB|getLabel|P26|qid=Q905}}</th><td>|</td></tr>}}
|}
Label Value