Need a filter for tiddlers based on more than one criteria

1

I need to show a custom viewtemplate on tiddlers based on more than one criteria .
I need the custom viewtemplate to be shown on all of the tiddlers with below given combination of fields - fieldname-A:fieldvalue-A, fieldname-A:fieldvalue-B, fieldname-A:fieldvalue-C
How to do it ?

<$list filter="[all[current]fieldname-A[fieldvalue-A]]">

I know the filter to show the viewtemplate on tiddlers with fields fieldname-A:fieldvalue-A . How to add the rest of the field combinations also to the filter ?.

2

Your filter to catch any of those 3 values in fieldnameA can look like this:

{{{ [[fieldvalue-A]] [[fieldvalue-B]] [[fieldvalue-C]] +[listed[fieldname-A]] }}}

Of course, the “listed” approach will pull tiddlers that include any of those values, whether or not the field also contains other values. For most use cases I can imagine, that’s what I want, and I specifically would not want my filter to exclude tiddlers that have additional values in the field. Is this assumption ok for your use-case?

3

https://task-demo.tiddlyhost.com/#%24%3A%2FTasker%2FKanban%2FViewTemplate%2FKanbanTagging

This is the filter I am using. I want the kanban viewtemplate to be shown in tiddlers with fields like gsd_type:project, gsd_type:realm, gsd_type:contact
But with the current filter kanban viewtemplate is shown on all tiddlers in the storylist.

4

What other values can the field you are testing have?
Perhaps you could state the logic seperate from the code?

I find it easier to stack a series of negative tests

[get[gsd_type]!match[avalue]!match[bvalue]] and if you want the opposite you can use emptyMessage.

We now have realy easy ways using the new functions definition so if you spell out the logic I can give you a solution. Here is a guess;

\function kanban.test() [{!!gsd_type}match[project]]  [{!!gsd_type}match[realm]] [{!!gsd_type}match[contact]]
  • something to note here is using {!!fieldname} refers to the field on the current tiddler.

Now if you use <<kanban.test>> as a filter the first and only value will be true and if none are true the filter does not return anything.

1 Like
5

Here’s a way with regular expressions:

<$reveal tag="div" type="nomatch" stateTitle=<<folded-state>> text="hide" retain="yes" animate="yes">
<$list filter="[all[current]regexp:gsd_type[(realm|project|contact)]]">
{{!!lien}}
{{||$:/Tasker/Kanban/Tagging}}
</$list>
</$reveal>

The problem with the “listed” approach is that listed looks at all tiddlers for a match – not just the current tiddler.

Edit 3: Here’s a version that works in almost the same manner as your original intent:

<$reveal tag="div" type="nomatch" stateTitle=<<folded-state>> text="hide" retain="yes" animate="yes">
<$list filter="[[project]] [[realm]] [[contact]] :filter[<..currentTiddler>get[gsd_type]match<currentTiddler>]">
{{!!lien}}
{{||$:/Tasker/Kanban/Tagging}}
</$list>
</$reveal>
1 Like
6

@TW_Tones @Mark_S Thank you both of you for the solutions.

I will use the regexp approach by @Mark_S for the time being because there is some issue with the other two solutions and kanban. Although the kanban viewtemplate is correctly displayed, I am unable to add task into the kanban with the other two solutions provided. But regexp approach doesn’t have this problem. I don’t know why its is happening like that. I will investigate.

7

Oh. Needs variable=“null” .

1 Like
8

Everything works now. Thank you @Mark_S for the help. Which one of the above three solutions should I use. Any suggestions ?
@TW_Tones solutions will help me to understand about functions and use them in my wiki more.