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项目中有一点复杂的模型。三个模型通过通用关系相互绑定。

以下是示例模型：

class Person(models.Model):
    first_name = models.CharField()
    last_name = models.CharField()
    ptype = models.CharField()
    mapping = models.ForeignKey("Mapping", related_name="mapping")

class Profile(models.Model):
    rank = models.CharField()
    company = models.ForeingKey("Company")

class Company(models.Model:
    name = models.Charfield()

class Mapping(models.Model):
    origin_person_ctype = models.ForeignKey(ContentType, related_name="origin_mapping")
    origin_person_id = models.PositiveIntegerField()
    origin_person_object = GenericForeignKey('origin_person_ctype', 'origin_person_id')
    mapped_profile_ctype = models.ForeignKey(ContentType, related_name="mapped_mapping")
    mapped_profile_id = models.PositiveIntegerField()
    mapped_profile_object = GenericForeignKey('mapped_profile_ctype', 'mapped_profile_id')
    company = models.ForeignKey("Company")

还有一个用于从 Person 模型中获取数据的 Rest API。

class PersonAPIView(generics.RetrieveUpdateAPIView):

    serializer_class = PersonSerializer
    lookup_url_kwarg = 'person_id'

    def get_queryset(self):
        return Person.objects.all().prefetch_related(
            "mapping",
            "mapping__mapped_profile_object",
            "mapping__company"
        )

class PersonSerializer(serializers.ModelSerializer)
    class Meta:
        model = Person
        fields = (
            'id',
            'first_name',
            'last_name',
            'type',
        )

现在，我必须在类中添加Company.name和Profile.rank作为嵌套字典列表PersonSerializer。

我怎样才能像这样序列化通用关系值：

[
    {"company1": "rank1"},
    {"company2": "rank2"}
    etc...
]
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0 回答 0