How to add custom filtering fields to an APIListView

[Fendy Pierre]

I'm using django rest framework and I have a ListAPIView that I would like to implement a complex filtering functionality that I'm using Q filters. My question is how do I generate custom fields for this filtering? 

url:

 path('', EventListView.as_view(), name='event_list_view'),

serializer:

    class EventSerializer(serializers.ModelSerializer):
        class Meta:
            model = Event
            exclude = ('user', )
       

View: 

    class EventListView(ListAPIView):
        authentication_classes = ()
        permission_classes = ()
        serializer_class = EventSerializer

filter function: 

    def filter_events(
            user: User, sort_by: int = DISTANCE, privacy_levels: [int] = [EVERYONE], categories: [Category] = None,
            start_date: datetime.datetime = DEFAULT_START_DATE, end_date: datetime.datetime = DEFAULT_END_DATE,
            distance: int = DEFAULT_DISTANCE, current_location: Point = None, unit: int = None,
            clubs: [UniversityClub] = None, universities: [University] = None,
            greeks: [GreekOrganization] = None, groups: [UserGroup] = None, users_p: [User] = None
                      ):
        ....


        if EVERYONE in privacy_levels:
            everyone_q = Q(privacy_level=EVERYONE, university__in=user_universities, start_time__range=[start_date, end_date])
        else:
            everyone_q = Q()
        if STUDENTS in privacy_levels:
            student_q = Q(privacy_level=STUDENTS, start_time__range=[start_date, end_date])
        else:
            student_q = Q()
        ...