Hi
Try adding the filter as a separate run:
<$list filter="[tag[empire_event]] +[faction[$faction$]sort[year]]">
<$set name=theyear value={{!!year}}>
<$list filter="[tag[species]] +[planet{!!planet}]" >
regards
On Sunday, 3 January 2016 04:16:15 UTC+2, David Allen wrote:
>
> Hi. I'm having trouble with one of my macros, and I'm not sure why.
>
> Here is the code:
> \define empire_species(faction)
> !!Species
>
> <$list filter="[tag[empire_event]faction[$faction$]sort[year]]">
> <$set name=theyear value={{!!year}}>
> <$list filter="[tag[species]planet{!!planet}]" >
> *<$link to=<<currentTiddler>> >
> <<currentTiddler>>
> </$link>(<<theyear>>)
>
> </$list>
> </$set>
> </$list>
> \end
>
> This is supposed to get a list of tiddlers tagged empire_event whose
> faction field matches the input, then get a list of species whose planet
> field matches the planet field of the empire event. What it's actually
> doing is grabbing a list of species that don't have a planet field defined
> yet and appending the desired result of this macro to that list.
>
> Does anyone know what I need to change to keep this from grabbing species
> that don't have the planet field?
>
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