[Panel] using query with filterBy() doesn't work with array

[texnixe]

Describe the bug

I'd expect a query in a pages field like this to work:

    fields:
      references:
        label: References
        type: pages
        multiple: true
        query: site.index.filterBy('template', 'in', ['note', 'album'])

But this throws the error

"in_array() expects parameter 2 to be array, string given"

Tested with Kirby 3.0.1

[bastianallgeier]

Our query language does not support arrays yet. I think it would be good to convert this to an idea ticket to implement arrays. I'm not sure how complex this would end up though.

[distantnative]

@bastianallgeier I actually would leave it here. For us this seems like a feature idea. But I think most developers/users won't directly understand why this should not be possible right now - so rather see it as a bug.

[neildaniels]

I would love array support in the query language, in particular for the case of filtering by templates. Either as the way described above with filterBy() or with the template() function.

[bastianallgeier]

Our regex wizard @distantnative made it possible 🎉