Getting a field value from a transcluded field name

[Steven Schneider]

Hi folks,

I've written a macro that identifies and presents tiddlers as slides in a slideshow with this: 

<<punchshow2 "welcome-to-class">>

My macro sets variable slidetag as follows:

<$set name=slidetag value="""$slidetag$""">

Tiddlers to be included in the slideshow are tagged with the name of the show (example: "welcome-to-class") and have a field of the same name (example: welcome-to-class) with value = 1 (or 2, etc.)

I want to dynamically set the bgcolor of the tiddlers based on slidenumber.

How do I reference a field that is defined through transclusion? In the code below, I'm trying to get the value of the field <<slidetag>> into a variable <<slidenumber>>

<$list filter="[tag<slidetag>!nsort<slidetag>]" >

<$set name="slidenumber" filter="[all[current]field<slidetag>]">
...

doesn't work.

Suggestions?

Thanks, //steve.

[Jeremy Ruston]

Hi Steve

How do I reference a field that is defined through transclusion? In the code below, I'm trying to get the value of the field <<slidetag>> into a variable <<slidenumber>>

<$list filter="[tag<slidetag>!nsort<slidetag>]" >

<$set name="slidenumber" filter="[all[current]field<slidetag>]">
...

doesn't work.

Try

<$list filter="[tag<slidetag>!nsort<slidetag>]">

<$set name="slidenumber" tiddler=<<currentTiddler>> field="slidetag">

...

The trick is a new feature of the set widget (since 5.1.14) that allows a variable to be set directly from a tiddler field (or index).

Best wishes

Jeremy.

Suggestions?

Thanks, //steve.

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[Steven Schneider]

Thanks, Jeremy.

But, did you mean:

<$list filter="[tag<slidetag>!nsort<slidetag>]">

<$set name="slidenumber" tiddler=<<currentTiddler>> field=<<slidetag>>>

(It is almost working; i've got something else wrong now :)

//steve.

[Mark S.]

This example worked for me, but I think it may need to have the inner <$set> changed to another <$list>.

<$set name=slidetag value="myslide">
<$list filter="[tag<slidetag>!nsort<slidetag>]" >
<$set name="slidenumber" filter="[all[current]get<slidetag>]">
<<slidenumber>><br/>
</$set>
</$list>
</$set>

The main thing is, that you needed the "get" operator, not the field operator. The field operator filters by a field's contents. The "get" operator returns the value of a field.

Good luck!
-- Mark