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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