filter on array fields should accept __in queries

[stefanprobst]

filter on array fields should accept __in operator as a query param, e.g. ?id__in=1,2,3 or ?topic__in=1,2,3,4

[stefanprobst]

what does work though is https://sola.acdh-dev.oeaw.ac.at/apis/api/entities/passage/?topic=84&topic=126

[sennierer]

There is an issue with django-filters that is preventing the __in filter for m2m fields for the easiest method of registering filters in an DRF GenericView Class. I will rework the function for creating and registering the filters so we can use the __in filter throughout the API, but for the moment only the workaround mentioned above is working.

[stefanprobst]

personally, i'm totally fine with the long form ?topic=84&topic=126 syntax - we should just agree on what we want to support and stick to it

[sennierer]

we will keep the support for ?topic=84&topic=126. However, for consistency we will additionally add the __in operator also for m2m fields (currently only working for fk) at a later stage.
closing for now