with reference to my previous post, no need to say neither this code works
for the inner filter:
<$set name='my_tiddler' value='tiddler-X'>
...
filter="[enlist{!!my_tiddlers_list}<my_tiddler>]">
nor this:
<$set name='my_tiddler' value='tiddler-X'>
...
filter="[[enlist{!!my_tiddlers_list}]<my_tiddler>]">
they both always output the value of <<my_tiddler>>, whether it was
included in my_tiddlers_list or not.
On Saturday, October 16, 2021 at 6:51:15 PM UTC+3 CarloGgi wrote:
> Hallo again,
> I have some tiddlers with a special field, call it 'my_tiddlers_list' that
> stores, not hard to guess, a list of other tiddlers. By 'list' I mean to
> say the result of an <$action-listops xxx subfilter> widget, which is
> indeed some 'collection' of items separated by whitespace. I don't know if
> that's a 'list' in the sense of a type of variable (does TW have any
> variable types after all? It seems it doesn't).
> Anyway, how do I go to check if a given tiddler 'tiddler-X' is included in
> the list of tiddlers stored into field 'my_tiddlers_list' of a[ny] tiddler?
> When I transclude the reference to 'my_tiddlers_list' as in
> {{!!my_tiddlers_list}}what i get is a unique 'string'. How do I split it up
> into its single member items? And once split the string into tokens (its
> member items), ho do I perform the comparison check?
>
> So far, I came up with this very beginner-level code (I'm sure there are
> more elegant, concise ways to write it, merging the two filters into a
> single one and getting rid of one of the <$list> cycles) that tries to
> exploit 'enlist' operator. I leave some parts as 'pseudocode' because I
> don't know how to write them:
>
> <$set name='my_tiddler' value='tiddler-X'>
>
> <$list filter="[tag[mytag]has:field[my_tiddlers_list]]" >
> <$list
> filter="[enlist{!!my_tiddlers_list}canIDoTheComparisonHere?]">
> orShallICompareHere? AndIfSo,How?
> </$list>
> </$list>
>
> </$set>
>
> but have no clue if I'm going the right way and how to do the comparison
> check.
>
> Writing inner filter as filter="[enlist{!!my_tiddlers_list}[tiddler-X]]"
> doesn't work, nor does it work writing it as
> filter="[[enlist{!!my_tiddlers_list}][tiddler-X]]". In both cases I get
> <<currentTiddler>> valued as tiddler-X, regardless if it is included in
> my_tiddlers_list's list or not. For God's sake: why? And how do I write the
> check?
>
> Thanks for helping,
> CG
>
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