Is there a filter to list all tiddlers in a TOC-"folder" including all tiddlers in all "subfolders" (recursively)

#1

Hello!
Is there a filter expression to list all tiddlers in a TOC-“folder” recursively?
for example: in the “Contents” sidebar-tab on tiddlywiki.com, the title of all tiddlers in the Welcome-“folder” including all tiddlers in all “subfolders”?
Cheers

#2

Perhaps something like

<$list filter="[[Welcome]descendants[]]"/>

if you use a third party filter plugin: Yaisog Bonegnasher — a non-linear personal web notebook

#3

It’s not a simple filter expression, but rather a very small recursive \procedure…

Try this on https://TiddlyWiki.com:

\procedure toc-list(here)
<$set name=exclude filter="[subfilter<exclude>] [<here>]">
<$list filter="[tag<here>] -[enlist<exclude>] +[!has[draft.of]]">
	<$link/><br/>
	<$macrocall $name=toc-list here=<<currentTiddler>>/>
</$list>
\end

<<toc-list "Welcome">>

Notes:

  • The exclude variable is used to prevent infinite recursion if a “tag loop” occurs.
  • For example, if TiddlerA tags TiddlerB and TiddlerB tags TiddlerC, and TiddlerC tags TiddlerA, then the recursion will continue forever (or until your browser runs out of memory!).
  • The exclude variable starts out empty and then adds the current tiddler (<<here>>) to keep track of each title that has already been “visited” in the current recursion branch so it won’t be visted again.

enjoy,
-e

2 Likes
#4

@vuk thanks, I’ll take a look at it.

@EricShulman Works perfectly, exactly what I needed!

Just so you know: I need it to limit a search box to a TOC entry. Many thanks!

#5

The code I provided is intended to directly render the resulting list of tiddler titles. However, if you need to “capture” this output in a variable for use in other code (e.g., to “limit a search”), then you will need to make a small adjustment…

Instead of using:

<$link/><br>

to output the titles, you will need to use:

{{{ [<currentTiddler>format:titlelist[]] }}}<br>

to ensure that any titles that contain spaces are properly enclosed within doubled square brackets so that the output forms a valid space-separated, bracketed list of titles. You can then use a $wikify widget to capture that list, like this:

\procedure toc-list(here)
<$set name=exclude filter="[subfilter<exclude>] [<here>]">
<$list filter="[tag<here>] -[enlist<exclude>] +[!has[draft.of]]">
	{{{ [<currentTiddler>format:titlelist[]] }}}<br/>
	<$macrocall $name=toc-list here=<<currentTiddler>>/>
</$list>
\end

<$wikify name=tidlist text="""<<toc-list "HelloThere">>""">
... your code goes here ...
</$wikify>

The resulting <<tidlist>> variable can then be used in your search filter syntax:

[enlist<tidlist>search:text[something]]
1 Like
#6

I’ve implemented it and it works perfectly; I’m impressed by how skillfully one can program in TiddlyWiki. Thanks again