Oops, I missed the closing </$set> in both code fragments but that is not
the issue.
On Sunday, February 28, 2021 at 10:27:45 PM UTC+1 Pall Sigurdsson wrote:
> Hello,
>
> This is my first post here. I discovered TiddlyWiki last November and got
> hooked by its power and beauty. I challenging myself into programming
> something which was supposed to be very simple in the beginning but who
> knew that this would become so addictive? Anyhow, I have a question I'm
> hoping someone here could help me with.
>
> How can one loop through tiddlers which are two levels downstream in the
> tag-hierarchy or further? I already figure out how to copy a field value
> from the current tiddler to all tiddlers which are tagging it and which
> also have the tag 'task' but what I think I need help with is to propagate
> the value 2-3 levels further.
>
> The following code fragment reads the task_visibility (custom) field of
> the current tiddler and applies it to the next level below (only to
> tiddlers which are also tagged with 'task').
>
> <$set name="taskVisibilityValue" value={{!!task_visibility}}>
> <$list filter="[tag[task]tag<currentTiddler>]">
> <$action-setfield $field="task_visibility" $value=<<taskVisibilityValue>> >
> </$list>
>
> Note: The filter above can be replaced with
> "[all[current]tagging[]tag[task]]" - it works just the same.
>
> One of the things I tried for taking this one level further down the task
> hierarchy was nesting the lists:
>
> <$set name="taskVisibilityValue" value={{!!task_visibility}}>
> <$list filter="[all[current]tagging[]tag[task]]">
> <$action-setfield $field="task_visibility" $value=<<taskVisibilityValue>> >
> <$list filter="[all[current]tagging[]tagging[]tag[task]]">
> <$action-setfield $field="task_visibility" $value=<<taskVisibilityValue>> >
> </$list>
> </$list>
>
> This code still works only on the first level below the current tiddler.
> Does anyone know how to apply this to the next level below the first child
> level (and further)?
>
> I'm also wondering whether it is a good idea to do this (or how far down
> to go), whether there are performance issues to be expected with a loop
> like this, when the hierarchy below the current tiddler might contain
> dozens of tiddlers.
>
> Best regards,
> Pall
> - Currently on version 5.1.23
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