S S, Sorry, my above comment was somewhat off topic. It was drawing out the behaviour that Thomas pointed out, with the transclude widget.
If we use the existence of a field as an indicator, then if it has a value or not may not matter. If the field does not exist (and thus cant have a value) the the fall back could display the code necessary to create that field. Just a possible mechanism that may be of use. If the field has a value it will return it, which is not allways desirable. Regards Tony On Saturday, 5 January 2019 18:04:59 UTC+11, S. S. wrote: > > Hi Tony, > > I believe the fallback is not exactly emptyValue for a field's value - > because if there is the field but it has no value - the TranscludeWidget > will return empty. It is only if there is no field - that the fallback can > be used. However, it appears it can be used by looking for the existence of > a tiddler. > > Cheers. > > On Saturday, January 5, 2019 at 6:50:20 AM UTC+7, TonyM wrote: >> >> Info for all and thanks Thomas >> >> As in https://tiddlywiki.com/#TranscludeWidget >> >> *The TranscludeWidget >> <https://www.google.com/url?q=https%3A%2F%2Ftiddlywiki.com%2F%23TranscludeWidget&sa=D&sntz=1&usg=AFQjCNHkLxNxA9l7Vcplk-jwi79jsxNc-w> >> >> treats any contained content as a fallback if the target of the >> transclusion is not defined (ie a missing tiddler or a missing field).* >> >> Explains why >> <$transclude field="caption"><$view field="title"/></$transclude> >> works >> >> Of note here is we are asking to transclude a field, not a whole tiddler, >> and this is a form of emptyValue >> >> This actually is a great tip because it provides a form of selective >> display, a block of wiki text can be displayed, simpler to use than list or >> reveal, that operates on the existence of a value, not yes or no. >> >> Regards >> Tony >> >> >> -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/30b7a8cd-8775-4082-a2bc-45f64a0cf063%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
