Thanks, Soren, for the explanation and suggestions. My understanding of how
the filters work is unfortunately very limited. I have been doing a lot of
trial and error, sometimes finding a solution eventually, but too often
without understanding of why it worked. Instead of continuing with that
approach, I think asking a question and getting specific answers will lead
to an increased understanding and it is already starting to pay off :)
The looping operation I described in the last post is a macro triggered by
a Select widget. I use the actions attribute of the Select widget to call
this code as a macro. Closing the first list widget (for the first level)
before running the same operation at the next level was actually the first
thing I attempted but I didn't manage to get it to work. The second list
widget in the following code does not work.
<$set name="taskVisibilityValue" value={{!!task_visibility}}>
<$list filter="[all[current]tag[task]tagging[]]">
<$action-setfield $field="task_visibility" $value=<<taskVisibilityValue>> >
</$list>
<$list filter="[all[current]tag[task]tagging[]tagging[]]">
<$action-setfield $field="task_visibility" $value=<<taskVisibilityValue>> >
</$list>
</$set>
What am I doing wrong?
Note: The kin filter actually looks interesting and I might try it out if I
will not solve it with core filter functionality or if I find more use
cases for it.
Best regards,
Pall
On Monday, March 1, 2021 at 12:29:25 AM UTC+1 Soren Bjornstad wrote:
> Your first $list widget is resetting the current tiddler, so in your
> second $list widget the all[current] doesn't mean the same thing as it did
> in the first. If I'm understanding your tiddler layout correctly, I think
> you should be closing the first $list widget prior to starting the second
> one.
>
> As for a better way, the kin filter
> <https://bimlas.gitlab.io/tw5-kin-filter/> can be used to merge all the
> levels of a multi-level hierarchy into a single list, which would prevent
> you from having to try to make this recursive to handle an arbitrary number
> of levels. I think you should be able to get that to work here.
>
> (Also, pretty sure you need a $button widget somewhere if you want to
> trigger anything, unless I'm missing something – but maybe you just left
> that out for brevity.)
>
> On Sunday, February 28, 2021 at 3:45:26 PM UTC-6 psigu...@gmail.com wrote:
>
>> Oops, I missed the closing </$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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