filtering queryset in CreateAPIView view

[Larry Martell]

I have a CreateAPIView view with this code in the serializer:

class AssignWorkItemSerializer(serializers.Serializer, WorkitemSerializerMixin):
assigneeIds = serializers.ListSerializer(
child=serializers.PrimaryKeyRelatedField(
queryset=get_user_model().objects.filter(userrole__role__name='analyst')
),
source='assignees'
)

This is failing because that query returns multiple rows. I want to
filter that queryset at run time by something that is available to me
in the request. Is there a way to do that?