什么决定了 DjangoRestFramework 中哪些字段可以更新

Question

我目前有一个包含以下字段的序列化器

class Meta:
    model = Asset
    fields = ('id', 'uuid', 'asset_category', 'asset_sub_category',
              'make_label',
              'asset_code', 'serial_number', 'model_number',
              'checkin_status', 'created_at',
              'last_modified', 'current_status', 'asset_type',
              'allocation_history', 'specs', 'purchase_date',
              'notes', 'assigned_to', 'asset_location'
              )

序列化器

class AssetSerializer(serializers.ModelSerializer):
    checkin_status = serializers.SerializerMethodField()
    allocation_history = serializers.SerializerMethodField()
    assigned_to = UserSerializer(read_only=True)
    asset_category = serializers.SerializerMethodField()
    asset_sub_category = serializers.SerializerMethodField()
    make_label = serializers.SerializerMethodField()
    asset_type = serializers.SerializerMethodField()
    model_number = serializers.SlugRelatedField(
        queryset=AssetModelNumber.objects.all(),
        slug_field="model_number"
    )

    class Meta:
        model = Asset
        fields = ('id', 'uuid', 'asset_category', 'asset_sub_category',
                  'make_label',
                  'asset_code', 'serial_number', 'model_number',
                  'checkin_status', 'created_at',
                  'last_modified', 'current_status', 'asset_type',
                  'allocation_history', 'specs', 'purchase_date',
                  'notes', 'assigned_to', 'asset_location'
                  )
        depth = 1
        read_only_fields = ("uuid",)

查看

class ManageAssetViewSet(ModelViewSet):
    serializer_class = AssetSerializer
    queryset = Asset.objects.all()
    # permission_classes = [IsAuthenticated, IsAdminUser]
    # authentication_classes = (FirebaseTokenAuthentication,)
    http_method_names = ['get', 'post', 'put', 'delete']
    filter_backends = (filters.DjangoFilterBackend,)
    filterset_class = AssetFilter

    def get_object(self):
        queryset = Asset.objects.all()
        obj = get_object_or_404(queryset, uuid=self.kwargs['pk'])
        return obj

型号资产模型。一些字段已被省略

class Asset(models.Model):
    """Stores all assets"""
    uuid = models.UUIDField(unique=True, default=uuid.uuid4, editable=False)
    asset_code = models.CharField(
        unique=True, null=True, blank=True, max_length=50)
    serial_number = models.CharField(
        unique=True, null=True, blank=True, max_length=50)
    created_at = models.DateTimeField(auto_now_add=True, editable=False)
    asset_location = models.ForeignKey('AndelaCentre', blank=True, editable=True, null=True,
                                       on_delete=models.PROTECT)
    purchase_date = models.DateField(
        validators=[validate_date],
        null=True, blank=True)
    last_modified = models.DateTimeField(auto_now=True, editable=False)
    assigned_to = models.ForeignKey('AssetAssignee',
                                    blank=True,
                                    editable=False,
                                    null=True,
                                    on_delete=models.PROTECT)
    model_number = models.ForeignKey(AssetModelNumber,
                                     null=True,
                                     on_delete=models.PROTECT)
    current_status = models.CharField(editable=False, max_length=50)
    notes = models.TextField(editable=False, default=" ", )

但是，在可浏览的 Api 上，UPDATE/PUT 表单上仅显示 4 个字段，如下图所示

其他一些字段没有出现在这里的原因可能是什么。什么决定了哪些字段是可更新的？？

Answer 1

在您的模型中，您为许多字段设置了 editable=False。该字段不会显示。如果要显示和编辑该字段，请删除该选项。有关详细信息，请参阅

Answer 2

好吧，问题是当您设置 depth = 1 时，ModelSerializer 会尝试为您未明确提及的任何外键相关字段生成 NestedSerializer 字段。 NestedSerializer 字段是只读字段。这就是不显示 Assest Location 的原因。删除 depth = 1 行，DRF 将使用默认映射即 PrimaryKeyRelatedFiel 映射所述字段，您将看到显示该字段。

什么决定了 DjangoRestFramework 中哪些字段可以更新

What determines what fields can be updated in DjangoRestFramework

python

django

django-rest-framework

django-rest-viewsets