django rest框架的相关对象查询

我有以下型号

class STUser(AbstractBaseUser):
    email = models.EmailField(unique=True)
    name = models.CharField(max_length=255)
    companyname = models.CharField(max_length=200, blank=True, null=True)
    ...

class VenuePermissions(models.Model):
    user = models.ForeignKey(STUser, on_delete=models.CASCADE)
    venue = models.ForeignKey(Venue, on_delete=models.CASCADE) 
    signupvaildatestring = models.CharField(max_length=200, blank=True, null=True)
    ...

我想获取所有

STUser

对象并获取它们的所有权限

因此，我想获取所有

VenuePermissions

对象。并抓取每个venuePermission的

用户

和

场馆

对象

我有两种方法可以做到这一点。使用

STUser

上的

VenuePermissions\u set

属性，但是当场地即将成为

pk

值时，我如何获取场地

或者专注于

VenuePermissions

对象，从pk值中获取用户和场地，但如何

我记得嵌套查询，我在浏览代码中也做过一次

以下是一个例子：

 rooms = Room.objects.filter(venue=OuterRef('pk'), sixtyroundseatingoption= True)
            venuelist = venuelist.annotate(sixtyrounds=Exists(rooms))
            venuelist = venuelist.filter(Q(sixtyrounds = True) | Q(fullbuyoutsixtyroundseatingoption = True))

我以前在序列化程序中设置过对象

示例序列化程序：

class RoomAndImageSerializer(serializers.ModelSerializer):
    roomimage_set = RoomImageSerializer(many=True, read_only=True)
    class Meta:
        model = Room
        fields = ('pk','name')

如果您对本查询有任何帮助，我们将不胜感激

这就是我目前正在尝试的，如果可行，我将发布一个答案：

class VenueUserList(ListAPIView):
    serializer_class = VenueUserListSerializer
    queryset = VenuePermissions.objects.select_related('user').select_related('venue').filter(signupvaildatestring=None)

class VenueUserListSerializer(serializers.ModelSerializer):
    user = UserSerializer()
    venue = VenueSerializer()
    class Meta:
        model = VenuePermissions
        fields = ('user', 'venue', 'isvenueviewer', 'isvenueeventplanner', 'isvenueadministrator')

class VenueUserList(ListAPIView):
    serializer_class = VenueUserListSerializer
    queryset = VenuePermissions.objects.select_related('user').select_related('venue').filter(signupvaildatestring=None)

class VenueUserListSerializer(serializers.ModelSerializer):
    user = UserSerializer()
    venue = VenueSerializer()
    class Meta:
        model = VenuePermissions
        fields = ('user', 'venue', 'isvenueviewer', 'isvenueeventplanner', 'isvenueadministrator')

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答案是这样的。但是，我仍然需要按用户对场馆进行分组。正在努力