Question

我正在使用django-tables2来生成generic.listview。我有3个涉及（简化）GenericDevice的模型，GenericDevice是从抽象类Device继承的，Invoice是外键，InvoiceSupplier是Invoice中的外键。所有类都定义了get_absolute_url。我想做的是在django-table中显示外键InvoiceSupplier，作为指向对象detailview的链接。

＃inventory / models.py

从invoices.models导入发票，供应商，制造商

class Device(models.Model):

    serial_number = models.CharField(
        max_length=20,
        unique=True,
        validators=[digits_chars]
    )

    inventory_number = models.CharField(
        max_length=20,
        unique=True,
        default='Update THIS!',
        validators=[digits_chars],
    )

    invoice = models.ForeignKey(
        Invoice,
        on_delete= models.PROTECT,

    )

    manufacturer = models.ForeignKey(
        Manufacturer,
        on_delete= models.PROTECT,

    )

    class Meta:
        abstract = True

class GenericDevice(Device):
    owner = models.ForeignKey(
        User,
        on_delete=models.PROTECT,
        null= True,
        blank = True,
    )

    type = models.ForeignKey(
        DeviceType,
        related_query_name='generic_devices',
        default=6,
        on_delete=models.PROTECT,
    )

    device = models.ForeignKey(
        NetworkDevice,
        on_delete=models.PROTECT,
        null=True,
        blank=True,
    )

＃invoices / models.py

class contact（models.Model）：

name = models.CharField(
    max_length=120,
    unique=True,
    help_text="Contact Name/Company Name",
)
address = models.TextField(
    max_length=255,
    blank=True,
)
phone_number = models.CharField(
    max_length=13,
    blank=True,

)
emailaddress = models.EmailField(
    blank = False,
    unique=True,
    default='johdoe@changeme.com'
)

class Meta:
    abstract = True

类供应商（联系人）： TIN = models.CharField（ max_length = 50， name ='TIN'，）说明= models.TextField（ null =真，）

类发票（models.Model）：

#If plural not corectly configured in admin(override)
#class Meta:
#   verbose_name_plural = 'Invoices'
INVOICE_STATUS =(
    ('P', 'Pending'),
    ('A', 'Approved'),
    ('R', 'Rejected'),
)

InvoiceNumber = models.CharField(
    max_length=30,
    default='Please Enter Serial',
    help_text='Invoice serial number',
    verbose_name='Number',
    unique=True,


)
InvoiceDate = models.DateField(
    default=date(2018,1,1),
    help_text='Date is in year, month, day format',
    verbose_name='Date of issue',
)

InvoiceDescription = models.TextField(
    default='Please enter a description for this invoice',
    help_text='Description should contain ...',
    verbose_name='Description',
)

InvoiceValue = models.DecimalField(
    max_digits=15,
    decimal_places=2,
    default=999,
    verbose_name='Amount (RON)',
)

InvoiceVAT = models.IntegerField(
    help_text='VAT value(percent)',
    default = 50,
    verbose_name='VAT (%)'
)

InvoiceSupplier = models.ForeignKey(
    Supplier,
    default=DEFAULT_SUPPLIER_ID,
    on_delete=models.PROTECT,
    verbose_name='Supplier',
)

和＃tables.py for GenericDevice

GenericDeviceTable（tables.Table）类：

serial_number = tables.LinkColumn()
invoice = tables.RelatedLinkColumn()
supplier = tables.RelatedLinkColumn(accessor='invoice.Supplier')


class Meta:
    model = GenericDevice

该表将外键发票呈现为对象的DetailView的链接，但不呈现外键发票的外键提供者。我在做什么错了？

我尝试使用Supplier = tables.RelatedLinkColumn（accessor ='Invoice.InvoiceSupplier'），效果相同：字段为空。

django-tables不在gcbv ListView中显示外键作为链接

0 个答案: