Django 休息过滤器聚合

Question

这是我的自定义过滤器 class

class CarFilter(FilterSet):
    pickup_date = NumberFilter(method='filter_pickup_date_timestamp')
    dropoff_date = NumberFilter(method='filter_dropoff_date_timestamp')

class Meta:
    model = Car
    fields = ['area_coverage', 'is_published', 'owner']

def filter_pickup_date_timestamp(self, queryset, name, value):
    pickup_date = datetime.fromtimestamp(float(value))
    for car in queryset:
        if len(Reservation.objects.filter(
            dropoff_date__gte=pickup_date,
            is_active=True,
            item_type='car',
            item=car.item,
        )) > 0:
            return None
    return queryset.filter()

def filter_dropoff_date_timestamp(self, queryset, name, value):
    dropoff_date = datetime.fromtimestamp(float(value))
    for car in queryset:
        if len(Reservation.objects.filter(
            pickup_date__lte=dropoff_date,
            is_active=True,
            item_type='car',
            item=car.item,
        )) > 0:
            return None
    return queryset.filter()

是否可以创建这样的方法，将同时根据参数 pickup_date 和 dropoff_date 进行过滤？如何从方法中提交的另一个过滤器中获取 value？因为知道我必须通过 Reservation 模型过滤两次。

Answer 1

有可能。你只需要这样做：

Reservation.objects.filter(LOGIC_FOR_FIRST_FILTERING_HERE).filter(LOGIC_FOR_SECOND_FILTERING_HERE)

Answer 2

有可能，因为in method request可以通过self

访问

def filter_pickup_date_timestamp(self, queryset, name, value):
    pickup_date = value
    dropoff_date = self.request.query_params.get('dropoff_date')

Django 休息过滤器聚合

Django rest filters aggregation

django

django-rest-framework

django-filter

django-filters