Detailview中的get_context_data函数甚至没有调用，但仍然可以调用上下文

Question

我已注释掉get_context_data功能（下方），但在模板中，我仍然可以致电{{ object }}，有人可以解释一下这是怎么回事吗？

# def get_context_data(self, *args,**kwargs):
#     context=super(productdetailview,self).get_context_data(*args,**kwargs)
#     print(context)
#     print(self.kwargs.get("pk"))
#     return context

这里是整个代码

class ProductDetailSlugView(DetailView):
queryset = product.objects.all()
template_name = "product/detail.html"
print(queryset)

# def get_context_data(self, *args,**kwargs):
#     context=super(productdetailview,self).get_context_data(*args,**kwargs)
#     print(context)
#     print(self.kwargs.get("pk"))
#     return context

# def get_context_data(self, *args, **kwargs):
#     context=super(ProductDetailSlugView,self).get_context_data(*args,**kwargs)
#     context['cart']=cart.objects.get_or_create(self.request)
#     # print(context)
#     return context

# def get_object(self, *args,**kwargs):
#     print(args)
#     print(kwargs)
#     pk=self.kwargs.get("pk")
#     slug=self.kwargs.get("slug")
#     print(self.kwargs.get("slug"))
#     print(product.objects.get_by_slug(slug))
#     return product.objects.get_by_slug(slug)

Answer 1

DetailView继承自BaseDetailView继承自SingleObjectMixin is called

的get_context_data