I do not mean to sound competitive, but all you need is .nested lists
<$list fiter="[all[tiddlers]each[state]get[state]sort[]]" variable=state>
<$list fiter="[all[tiddlers]state<state>each[region]get[region]sort[]]"
variable=region>
<$list fiter="[all[tiddlers]state<state>region<region>sort[]]">
<<currentTiddler>>
</$list>
</$list>
</$list>
gives a list sorted by state then region then tiddler title
not tested against data
note the groups state and region use "each" and the inner list only lists
those with the same state<state> and region<region> at a time
to keep it tidy i use the same name as the field as the variable name
generated by the each lists.
state<state> means list all tiddlers with the state field = the value in
the `<<state>> variable.
you could wrap the whole thing or make it more levels deep however a new
outer filter may need every filter to be updated. See how every list filter
starts with all[tiddlers] a fresh, so if you want to operate on all
tiddlers this is fine but only with tag[a] would need to read
[all[tiddlers]tag[a] to each filter.
Regards
Tony
On Saturday, December 7, 2019 at 3:47:14 PM UTC+11, Mark S. wrote:
>
>
> There are different approaches. The easiest would be to make a button
> that, when pressed, populates a fourth field that can then be sorted.
>
> Here's an approach that doesn't require two steps, but it does assume that
> "@@" is reserved:
>
> \define sortus()
> <$vars lb="[[" rb="]]">
> <$list filter="[has[fa]]">
> <$list
> filter="[<currentTiddler>addprefix[@@]addprefix{!!fc}addprefix{!!fb}addprefix{!!fa}addprefix<lb>addsuffix<rb>]"/>
> </$list>
> </$vars>
> \end
>
> <$wikify text=<<sortus>> name="ready2sort">
> <$list filter="[enlist<ready2sort>sort[]]" variable="sorted">
> <$list filter="[<sorted>split[@@]rest[]]"/>
> </$list>
> </$wikify>
>
>
>
>
>
>
> On Friday, December 6, 2019 at 7:53:03 PM UTC-8, Mohammad wrote:
>>
>> Assume you have a bunch of tiddlers
>>
>> - all tagged with data
>> - all have three fields fa, fb, fc
>>
>>
>> How one can produce a list of tiddlers where they are
>>
>> - sorted first by fa
>> - then by field fb
>> - then by field fc
>>
>>
>> This means to keep the multiple sort order!
>>
>> --Mohammad
>>
>
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