如何使用Django rest_framework中的穿透表来序列化自递归多对多模型？

Question

我正在使用django rest框架开发rest API，而我被困在序列化器上，其想法是使用我的代码通过表序列化自递归多对多模型：

model.py：

class Patient(models.Model):
    class Meta:
        db_table = 'patients'

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False, unique=True)
    id_card = models.CharField(max_length=45)
    dob = models.DateField()
    gender = EnumChoiceField(enum_class=Gender)
    patientscol = models.CharField(max_length=45)
    fk_user = models.ForeignKey(Users, related_name='user_patient', on_delete=models.CASCADE)
    relative = models.ManyToManyField("self", through='PatientHasRelative')

class PatientHasRelative(models.Model):
    class Meta:
        db_table = 'patients_has_relatives'

    fk_patient = models.ForeignKey(Patient, related_name='patient_has', on_delete=models.CASCADE)
    fk_relative_patient = models.ForeignKey(Patient, related_name='patient_relative', on_delete=models.CASCADE)
    relationship = EnumChoiceField(enum_class=Relationship)

我的serializer.py是：

class PatientSerializer(serializers.ModelSerializer):
    class Meta:
        model = Patient
        fields = ('__all__')

    id = serializers.UUIDField(read_only=True)
    id_card = serializers.CharField(required=True, max_length=45)
    dob = serializers.DateField(required=True)
    gender = EnumChoiceField(enum_class=Gender)
    fk_user = serializers.PrimaryKeyRelatedField(required=True, queryset=Users.objects.all())
    relative = PatientSerializer(read_only=True, required=True)#problem is here i cant use PatientSerializer here

class PatientHasRelativeSerializer(serializers.ModelSerializer):
    class Meta:
        model = PatientHasRelative
        fields = ('__all__')

    fk_patient = serializers.PrimaryKeyRelatedField(required=True, queryset=Patient.objects.all())
    fk_relative_patient = serializers.PrimaryKeyRelatedField(required=True, queryset=Patient.objects.all())
    relationship = EnumChoiceField(enum_class=Relationship)

有一点帮助，将不胜感激

Answer 1

为此，您需要在源模型的源字段中定义related_name，即添加