Question

; TLDR - 在发现一些解决方案之后，我的最后一个问题是，如果有的话，我该如何访问与主要详细视图模型相关的模型相关的模型？

我尝试使用通用详细视图来返回对象及其相关对象。在这个例子中，像麦当劳这样的公司会有任何网站（或位置）。我希望detailview能够显示的是公司详细信息以及与公司相关的站点详细信息。我虽然陷入了困境。尽管我没有寻求帮助，但我还是无法从引用公司网站的模型中提取数据。我哪里错了？我有点证明这可以在django shell中使用SiteModel.objects.filter(company=5)显示所有公司的ID为5的网站名称。

models.py

'''
The company model consists of the base company information 
'''

class CompanyModel(models.Model):
    name = models.CharField(_('Company Name'), max_length=255, blank=False)
    website = models.URLField(_('Company Website'), blank=True)
    since = models.DateField(auto_now_add=True)
    rate = models.DecimalField(max_digits=5, decimal_places=2, blank=False)

    def __str__(self):
        return '%s' % (self.name)

    class Meta:
        ordering = ['name']
        verbose_name = 'Company'
        verbose_name_plural = 'Companies'

'''
The site model consists of sites of a company as
some companies have several sites that we will work from.
'''


class SiteModel(models.Model):
    company = models.ForeignKey(CompanyModel, on_delete=models.PROTECT)
    address = models.ForeignKey(AddressModel, on_delete=models.PROTECT)
    phone = models.ForeignKey(PhoneModel, blank=True, null=True, on_delete=models.PROTECT)
    distance = models.SmallIntegerField(blank=True)

    def __str__(self):
        return '%s - %s, %s' % (self.company, self.address.city, self.address.state)

    class Meta:
        ordering = ['company']
        verbose_name = 'Company Site Information'
        verbose_name_plural = 'Company Sites'

views.py

class CompanyDetailView(DetailView):
    model = CompanyModel
    template_name = 'customers/detail.html'

    def get_context_data(self, **kwargs):
            context = super(CompanyDetailView, self).get_context_data(**kwargs)
            context['sites'] = SiteModel.objects.filter(id=self.kwargs['pk'])
            return context

urls.py

   url(r'^customer/(?P<pk>[0-9a-z-]+)/detail/$', CompanyDetailView.as_view(),
       name='customer-detail'),

更新1：

我的模板显示的是正确的公司，但只有1个网站，该网站与公司无关。精氨酸。它显示公司的ID是5，以及站点的ID是5.我如何在这里正确连接点？

模板

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Customer Detail</title>
  </head>
  <body>
    <div class="container">
      {{ object.name }}
      {% for site in sites %}
        {{ site }}
      {% endfor %}
    </div>
  </body>
</html>

更新2：

我能够通过不超级get_context_data来解决这个问题，并且只是通过相关模型名称的_set后缀进行迭代。 Django Documentation Reference

模板

  <!DOCTYPE html>
    <html>
      <head>
        <meta charset="utf-8">
        <title>Customer Detail</title>
      </head>
      <body>
        <div class="container">
    {{ company.name }}
    {% for site in company.sites.all %}
      {{ site }}
    {% endfor %}
        </div>
      </body>
    </html>

然而，对此的跟进是我如何深入多层？跟进上述模型，我还有一个＆＃34;报告＆＃34;模型。但是当我使用与上面相同的方法时，它似乎在第一个模型之后崩溃了。即我不能只使用company.sites.reports。

models.py

class ServiceReportModel(models.Model):
    report_number = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    site = models.ForeignKey(customers_models.SiteModel, on_delete=models.PROTECT, related_name='reports')
    request_number = models.ForeignKey(ServiceRequestModel,
                                       on_delete=models.PROTECT,
                                       null=True,
                                       blank=True,
                                       related_name='s_report_number'
                                       )
    reported_by = models.ForeignKey(main_models.MyUser, related_name='reports')
    reported_date = models.DateTimeField(auto_now_add=True)
    updated_by = models.ForeignKey(main_models.MyUser, blank=True, null=True, related_name='+')
    updated_date = models.DateTimeField(auto_now=True)
    equipment = models.ForeignKey(customers_models.EquipmentModel, on_delete=models.PROTECT)
    report_reason = models.CharField(max_length=255, null=True)
    time_in = models.DateTimeField(blank=True, null=True)
    time_out = models.DateTimeField(blank=True, null=True)
    actions_taken = models.TextField(null=False, blank=False)
    recommendations = models.TextField(null=True, blank=True)

    def get_absolute_url(self):
        return reverse('service-report', kwargs={'pk': self.pk})

    def __str__(self):
        return '%s - %s, %s' % (self.site.company, self.reported_date.strftime('%d %B %Y'), self.equipment.name)

    class Meta:
        ordering = ['reported_date']
        verbose_name = 'Service Report'
        verbose_name_plural = 'Service Reports'

Answer 1

我能够在一些帮助下获得解决方案。我回到了超级get_context_data方法，并使用过滤器和双下划线表示法关注跨越关系的this documentation。

class CompanyDetailView(DetailView):
    model = CompanyModel
    context_object_name = 'company'
    template_name = 'customers/detail.html'

    def get_context_data(self, **kwargs):
            context = super(CompanyDetailView, self).get_context_data(**kwargs)
            context['sites'] = SiteModel.objects.filter(company=self.get_object())
            context['reports'] = ServiceReportModel.objects.filter(site__company=self.get_object())
            return context

Detailview对象关系

1 个答案: