Using a transclusion with the days operator

#1

Hello

Another rookie question!

I have the following which selects Events that have happened in the last 14 days.

<$list filter=[tag[Event]!days:date[-1]!sort[]]-[!days:date[-14]]>
<$link field="title"/><br>
</$list>

This appears to give the results that I am looking for.

I thought I would change the syntax so that instead of using the fixed values -1 and -14 the values in fields day1 and day2 are used.

I tried the following, but despite having read the guidance on transclusions and brackets, I cannot get the syntax right.

<$list filter=[tag[Event]!days:date[[{!!day1}]]!sort[]]-[!days:date[[{!!day2}]]]>
<$link field="title"/><br>
</$list>

Please can someone point me in the right direction.

Cheers, Rob

#2

In filter syntax, brackets are used to indicate the type of operand handling needed. Square brackets around operands are only used for literal text/numeric values. When referencing a tiddler field, use curly braces. When referencing a variable, use angle brackets. Thus:

  • literal: days:date[-1]
  • variable: days:date<somevar>
  • fields: days:date{!!somefield}

So, in your use-case:

<$list filter=[tag[Event]!days:date{!!day1}!sort[]]-[!days:date{!!day2}]>
<$link field="title"/><br>
</$list>

-e

#3

Brilliant! Thank you @EricShulman.
The explanation was very useful.
Cheers, Rob