Variable for field name in filter

[stevesuny]

This filter works: <$list filter="[field:instructor{!!field-value}]">

My tiddler has field-name=instructor

How do I transclude {{!!field-name}} into the filter to replace "instructor"? 

(I've tried every possible solution but the right one :)

Thans, //steve.

[Mark S.]

Hi Steve,

Is there a typo here? In the filter you say field-value. But in your text you say field-name. Which is it?

Mark

[stevesuny]

My tiddler has these fields:

field-name: instructor

field-value: Chiang

I want to search for all tiddlers for which field:instructor = Chiang.

This works: filter="[field:instructor{!!field-value}]"

But this doesn't:

filter="[field:{!!field-name}{!!field-value}]"

Sorry to be confusing,

//steve.

[Mark S.]

Yeah, you can't use {{!!field-name}} notation to substitute for a filter operator suffix AFAIK. Use a macro to concatenate and form your filter instead, like:

\define indirect() [field:$(field-name)$[$(field-value)$]]
<$vars field-name={{!!field-name}} field-value={{!!field-value}}>
<$list filter=<<indirect>> />
</$vars>

HTH
Mark

[stevesuny]

Worked like a charm.

OK, I would never have gotten to figure that out. It seems these generic \define sitting on top of macros or templates are very powerful and useful addition to the general process of transclusion. 

Thanks for your help! I'll post the results in another thread soon. 

//steve.

[cmari]

Could you not also use:

<$list filter="[{!!field-value}listed{!!field-name}]">
<<currentTiddler>><br>
</$list>

cmari