Python Django Admin中不同模型的相关字段排序

我想按

业务名称

订购，但由于某些关系，订购不起作用，下面是我的第一个型号：

class LoanApplication(models.Model):

    loan_id = models.CharField(
        'Loan Application ID', max_length=40, unique=True, null=True,
        blank=True)
    loan_taker = models.ForeignKey(
        CustomerProfile, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name='Customer Profile', related_name='loan_entries')
    submitted_date = models.DateTimeField(
        'Submitted Date', null=True, blank=True)

然后，我有

客户档案

模型，如下所示：

class CustomerProfile(models.Model):

    customer_id = models.CharField(
        'Customer Profile ID', max_length=64, unique=True, null=True)
    cooperation_partner = models.ForeignKey(
        EmailUser, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('Jurisdiction'), related_name='partner_user_profile')
    user = models.OneToOneField(
        EmailUser, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('User'), related_name='user_profile')
    tipster_partner = models.ForeignKey(
        TipsterPartner, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name='Tipster Partner')

class Business(models.Model):


    business_id = models.CharField(
        'Business ID', max_length=64, unique=True, null=True, blank=True)
    business_name = models.CharField(_('Business'), max_length=128)
    business_address_street = models.CharField(
        'Business Address Street', max_length=50, blank=True)

class CustomerProfileBusiness(models.Model):

    business = models.ForeignKey(
        Business, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('Business'),
        related_name='customer_profile_relation')
    correlative_id = models.CharField(
        _('Business ID'), max_length=64, unique=True, blank=True, null=True)
    customer_profile = models.ForeignKey(
        CustomerProfile, on_delete=models.PROTECT,
        verbose_name=_('Customer Profile'), blank=True, null=True,
        related_name='business')

因此，我想指出商业模式，如下所示：

class CustomerProfile(models.Model):

    customer_id = models.CharField(
        'Customer Profile ID', max_length=64, unique=True, null=True)
    cooperation_partner = models.ForeignKey(
        EmailUser, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('Jurisdiction'), related_name='partner_user_profile')
    user = models.OneToOneField(
        EmailUser, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('User'), related_name='user_profile')
    tipster_partner = models.ForeignKey(
        TipsterPartner, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name='Tipster Partner')

class Business(models.Model):


    business_id = models.CharField(
        'Business ID', max_length=64, unique=True, null=True, blank=True)
    business_name = models.CharField(_('Business'), max_length=128)
    business_address_street = models.CharField(
        'Business Address Street', max_length=50, blank=True)

class CustomerProfileBusiness(models.Model):

    business = models.ForeignKey(
        Business, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('Business'),
        related_name='customer_profile_relation')
    correlative_id = models.CharField(
        _('Business ID'), max_length=64, unique=True, blank=True, null=True)
    customer_profile = models.ForeignKey(
        CustomerProfile, on_delete=models.PROTECT,
        verbose_name=_('Customer Profile'), blank=True, null=True,
        related_name='business')

然后，我们有最后一个是CustomerProfile业务，如下所示：

class CustomerProfile(models.Model):

    customer_id = models.CharField(
        'Customer Profile ID', max_length=64, unique=True, null=True)
    cooperation_partner = models.ForeignKey(
        EmailUser, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('Jurisdiction'), related_name='partner_user_profile')
    user = models.OneToOneField(
        EmailUser, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('User'), related_name='user_profile')
    tipster_partner = models.ForeignKey(
        TipsterPartner, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name='Tipster Partner')

class Business(models.Model):


    business_id = models.CharField(
        'Business ID', max_length=64, unique=True, null=True, blank=True)
    business_name = models.CharField(_('Business'), max_length=128)
    business_address_street = models.CharField(
        'Business Address Street', max_length=50, blank=True)

class CustomerProfileBusiness(models.Model):

    business = models.ForeignKey(
        Business, on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('Business'),
        related_name='customer_profile_relation')
    correlative_id = models.CharField(
        _('Business ID'), max_length=64, unique=True, blank=True, null=True)
    customer_profile = models.ForeignKey(
        CustomerProfile, on_delete=models.PROTECT,
        verbose_name=_('Customer Profile'), blank=True, null=True,
        related_name='business')

现在，我在LoanApplication的管理页面中进行排序，如下所示，但它不起作用：

@admin.register(LoanApplication, site=admin_site)
class LoanApplicationAdmin(admin.ModelAdmin):
    ordering = (
        '-modified',
        'loan_taker__business__customer_profile_relation__business_name',
    )

---

因此，我的目标是按照升序对

业务名称进行排序，但在LoanApplication
的管理页面中使用关系方法，什么不起作用？由于您是在
'-修改'
上的第一批订单，这意味着您将仅在平局时在
业务名称上下单。但是如果
modified
是一个
DateTimeField
，平局的几率几乎为零，因为这两个修改可以在几纳秒内结束。@WillemVanOnsem，谢谢你的贡献，但是我的问题是，这种关系正确吗
贷款人、业务人、客户、个人资料、关系人、业务人、姓名？