No, Algolia doesn't filter by these values but there are workarounds.
Workaround 1
You can leverage the tags attribute and use tags filtering. Please note that this will require a change to your dataset.
-
No record count: Tag filtering is used for filtering only. You will not get a count of records that match the filters. In this way, it is the same as using filterOnly() in the attributesForFaceting.
Workaround 2
You would need to update your data to include an additional attribute e.g. hasAuthor which is a boolean true/false value. With this in place you can then filter on this attribute: filters = hasAuthor:true or filters = hasAuthor:false