Trouble with nested lists, variables, prefix operator

[Brian Radspinner]

Hello all,

I am trying to get a nested timeline of Journal entries. Each Journal tiddler title starts with the prefix "YYY-0MM-0DD/" (example: 2021-04-19/Walking). For each day, there is also an empty tiddler titled with the format "YYY-0MM-0DD" (example: 2021-04-19). These
"day" tiddlers also have a "year" and "month" field (example: year=2021, month=-4).

I am trying to get a nested timeline list using the fields to break out the year & months, then finally display a list of transcluded entries for each year-month combo. So far I have the below code:

----------------------------

\define combo() $(getCombo)$

<$set name="getCombo" value="""<<year>>-<<month>>""" >

<$list filter="[tag[Journal]has:field[year]each[year]get[year]!nsort[title]]" variable="year">
   <$tiddler tiddler=<<year>>>
      <<year>><br/>
      <$list filter="[prefix<year>has:field[month]each[month]get[month]!nsort[title]]" variable="month">
         <$tiddler tiddler=<<month>>>
               {{!!title}}<br/>
               <<combo>> | <$list filter="[tag[Journal]prefix<combo>]">{{!!title}}</$list>
         </$tiddler><hr/>
      </$list>
   </$tiddler><br/><br/>
</$list>

</$set>

----------------------------

Everything works great until the line <<combo>> | <$list filter="[tag[Journal]prefix<combo>]">{{!!title}}</$list>. Outside the list, the <<combo>> variable properly displays, but inside the list <combo> is (maybe) not working. I am getting an empty list instead a list of tiddler titles prefixed with the <<year>>-<<month>> variables.

Any suggestions?

Thanks

[Mark S.]

The combo variable isn't being rendered and then passed to the list filter as you might imagine. It's being rendered right there in place, and the filter is getting the literal text.

Try getting rid of the <$set> widget and replacing the text in the middle with:

<$vars combo={{{ [<year>]addsuffix[-]addsuffix<month>] }}} >

<<combo>> | <$list filter="[tag[Journal]prefix<combo>]">{{!!title}}</$list>

</$vars>

I'm not sure if the nested bit with the <$tiddler tiddler=year> widget is necessary.

[Brian Radspinner]

Perfect! That worked. Thank you very much Mark.

[TW Tones]

You can also wrap the list with a Wikify, although I like Marks solution better.

See how I reuse the variable name;

<$wikify name=combo text="<<combo>>">

<<combo>> | <$list filter="[tag[Journal]prefix<combo>]">{{!!title}}</$list>

</$wikfy>

PS in your Question you refer to YYY not YYYY but I doubt its important here.

Regards

Tones