Question

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个对象并获取所有权限。

所以我想要抓住所有VenuePermissions个对象。并获取每个场地的user和venue对象

我可以通过两种方式做到这一点。使用VenuePermissions_set上的STUser属性，但是当它只是pk值时，如何抓住该地点？

或者专注于VenuePermissions对象并从pk值中获取用户和场地但是如何？

我记得嵌套查询，我在浏览代码中做了一个。

这是一个例子：

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

我在

之前在序列化器中完成了设置对象

示例序列化器：

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

对此查询的任何帮助都将不胜感激！

所以这就是我目前正在尝试的，如果有效，我会发一个答案：

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')

Answer 1

这是答案。但是我仍然需要按用户分组场地。正在努力。

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')

相关对象查询django rest框架

1 个答案: