Prepend string to field value in filter list - How?

[Matt Livingston]

Hi all,

I have a bunch of tiddlers named like "file name with spaces.pdf", matching a bunch of files in the Papers/ directory.

I want to set the _canonical_uri field equal to "Papers/file name with spaces.pdf"

Being a TW noob, I'm sure there's something I'm missing, but for the life of me I can't seem to prepend the "Papers/" part of the path onto the filename.  I can get the tiddler title into the field without the path, but whatever I do* to prepend "Papers/" winds up either not transcluding {{!!title}} or not prepending the path .

Here's what I have, which very nicely does only half of what I want what I want (uses the tiddler name)

---

<$list filter="[type[application/pdf]]">

<$button>
<$action-setfield $field="_canonical_uri" $value={{!!title}}/>
Update
</$button>
<$link/>

</$list>

---

I've tried:

      creating a <<concat str1 str2>> macro,

      using <$set name="thing" value="Papers/{{!!title}}"/>

      quoting the entire string

      not quoting anything

      quoting the path, but not the transcludifier

None of these worked.

Can someone help please?

Cheers,

Matt L.

[Eric Shulman]

On Thursday, April 15, 2021 at 7:07:52 AM UTC-7 blub...@gmail.com wrote:

I have a bunch of tiddlers named like "file name with spaces.pdf", matching a bunch of files in the Papers/ directory.

I want to set the _canonical_uri field equal to "Papers/file name with spaces.pdf"

...I can't seem to prepend the "Papers/" part of the path onto the filename.

 

You can use an "inline filter" (aka, "filtered transclusion"), like this:

<$action-setfield _canonical_uri={{{ [<currentTiddler>addprefix[Papers/]] }}}/>

enjoy,

-e

[Matt Livingston]

Thanks Eric.  That's exactly what I was looking for.