python - 外国字段如何显示名称而不是其 id？

Question

在我的 models.py 中，有两个模型，AvailableArea 有一个外部字段引用 AddressRegion:

class AddressRegion(models.Model):
    name = models.CharField(max_length=8)

    def __str__(self):
        return self.name
    def __unicode__(self):
        return self.name


class AvailableArea(models.Model):
    name = models.CharField(max_length=8)
    addressregion = models.ForeignKey(AddressRegion, default=1, related_name='availableareas', on_delete=models.CASCADE)

    def __str__(self):
        return self.name
    def __unicode__(self):
        return self.name

在 serializers.py 中，我序列化了所有字段:

class AvailableAreaSerializer(ModelSerializer):
    """
    region
    """
    class Meta:
        model = AvailableArea
        fields = "__all__"

在 views.py 中:

class AddressRegionListAPIView(ListAPIView):
    serializer_class = AddressRegionSerializer
    permission_classes = []
    queryset = AddressRegion.objects.all()

剩下的框架数据是这样的:

[
    {
        "id": 13,
        "name": "st-01",
        "addressregion": 3
    },
    {
        "id": 14,
        "name": "tg-02",
        "addressregion": 4
    },
    {
        "id": 15,
        "name": "sx-01",
        "addressregion": 3
    }
]

我希望addressregion 不显示addressregion 的id，而是显示addressregion 的name。

Answer 1

您可以执行以下操作:

class AvailableAreaSerializer(ModelSerializer):

    addressregion_name= serializers.ReadOnlyField(source='addressregion.name')

    class Meta:
        model = AvailableArea
        fields = ('id', 'name', 'addressregion_name')