python - django - DetailView 如何同时显示两个模型

Question

我有两个模型：广告和横幅

当我使用“通用视图”DetailView 如何同时带两个模型下面的代码只带一个广告

我的 url.py

url(r'^(?P<pk>\d+)/$', DetailView.as_view(
    model               = Advertisment,
    context_object_name = 'advertisment',
), name='cars-advertisment-detail'),

Answer 1

当然，只需覆盖get_context_data即可将内容添加到上下文中。

path('<int:pk>/', YourDetailView.as_view(), name='cars-advertisment-detail'),

class YourDetailView(DetailView):
    context_object_name = 'advertisment'
    model = Advertisement

    def get_context_data(self, **kwargs):
        """
        This has been overridden to add `car` to the template context,
        now you can use {{ car }} within the template
        """
        context = super().get_context_data(**kwargs)
        context['car'] = Car.objects.get(registration='DK52 WLG')
        return context

Answer 2

对我来说，制作这样的自定义 mixin 更容易：

class ExtraContextMixin(object):

    def get_context_data(self, **kwargs):
        context = super(ExtraContextMixin, self).get_context_data(**kwargs)
        context.update(self.extra())
        return context

    def extra(self):
        return dict()

稍后你可以只继承这个mixin，然后覆盖extra这样的：

class MyDetailView(ExtraContextMixin, DetailView):

    def extra(self):
        extra = Extra.objects.all()
        return dict(extra = extra)

我认为这更干净而不是压倒一切get_context_data