Added to TW-Scripts as
A Two Way Conditional View Template
TW-Scripts/Scripts%20in%20TW%205.1.20-pre.html#A%20Two%20Way%20Conditional%20View%20Template
On Wednesday, July 10, 2019 at 1:47:08 AM UTC+4:30, Jeremy Ruston wrote:
>
> Hi Steve
>
> Ah, I clearly need to explain better.
>
> I have parent tiddlers: A, B, C, D, etc. each tagged "parent"
>
> I have child tiddlers: A1, B1, C2, D2, etc. (they are not tagged "child",
> but are tagged with the name of the parent tiddler
>
> I need to have a template to manage the presentation of child tiddlers,
> but don't know how to write a filter that will capture any tiddler that is
> a child of any of the parent tiddlers, without specifying or knowing the
> name of the parent tiddlers.
>
>
> OK, so this is intended to be a view template segment that is activated
> for these child tiddlers?
>
> If so, the following filter can be used to determine whether the current
> tiddler is tagged with a tag that is itself tagged with “parent”:
>
> [<currentTiddler>] -[tag[parent]tagging[]]
>
> The filter will return an empty result set if the current tiddler is
> tagged by a tiddler tagged “parent”. So, you should be able to do something
> like this within your view template segment:
>
> <$list filter="[<currentTiddler>] -[tag[parent]tagging[]]"
> emptyMessage={{$:/_MyTemplateForChildTiddlers}} variable="ignore"/>
>
> Then, in $:/_MyTemplateForChildTiddlers you’d have the template that is
> only displayed for tiddlers tagged by tiddlers tagged “parent”.
>
> Best wishes
>
> Jeremy
>
>
> So neither Xavier's nor Mat's approach works because I don't know the name
> of the parent tiddler, and there is nothing about the tiddlers other than
> the fact that each is tagged to a tiddler that is tagged "parent"...
>
> <$list filter="[is[current] (tagged to a tiddler that is a parent) ]]">
>
>
>
> On Tuesday, July 9, 2019 at 5:59:07 AM UTC-4, Xavier wrote:
>>
>> Hi Steve,
>>
>> What about using the *tagging* operator like so: [tag[Canis]tagging[]] ?
>>
>> Cheers,
>> -- Xavier Cazin
>>
>>
>> On Mon, Jul 8, 2019 at 8:55 PM Steven Schneider <st...@sunypoly.edu>
>> wrote:
>>
>>> Hi everyone, I sense that others' have asked but I can't quickly find in
>>> the group:
>>>
>>> How would I filter on a tiddler being a "subtag." For example, if I had
>>> tiddlers for each species in the animal genus Canis
>>> <http://1kai.dokkyomed.ac.jp/mammal/en/genus/canis.html> I'd have
>>> tiddlers tagged "Canis" titled Canis mesomelas, Canis lupus, Canis latrans
>>>
>>> How would I create a filter to capture species, effectively capturing
>>> tiddlers that are tagged to one of the tiddlers tagged to tiddler "Genus"
>>>
>>> ?
>>>
>>> Thanks,
>>>
>>>
>>> //steve.
>>>
>>>
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>>
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