On Wednesday, February 17, 2021 at 7:40:09 AM UTC-8 JM wrote:
> <$list filter="[tag[project]sort[title]]">
> <$link to={{!!title}}>''<$view field="title"/>''</$link><br>
> <$list filter="[is[current]tagging[]tag[CAD]sort[title]]">
> <$link to={{!!title}}><$view field="title"/></$link><br>
> </$list><br>
> </$list>
>
> Is it possible to show only those projects, of which tiddlers with the
> tags project-title and CAD exist?
>
You can surround the inner $list with another $list that uses "limit[1]" to
act as a test, like this:
<$list filter="[tag[project]sort[]]">
<$link /><br>
<$list filter="[tag{!!title}tag[CAD]limit[1]]" variable="has_CAD_tag">
<$list filter="[tag{!!title}tag[CAD]sort[]]">
<$link /><br>
</$list><br>
</$list>
</$list>
Notes:
* *variable="has_CAD_tag"* prevents the test from changing the value of the
currentTiddler.
* simplified the inner filter to use *tag{!!title}* instead of
*is[current]tagging[]*
* used *<$link />* abbreviated syntax instead of verbose *<$link
to={{!!title}}><$view field="title"/></$link>*
* used *sort[]* (default parameter is "title")
enjoy,
-e
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