Django 渲染指定目录中不存在的模板

Question

我有模型“视频”并且我有这个模型的列表视图，然后在另一个应用程序中我试图创建一个专用用户可以查看的视图“UserVideosListView”。当我在为此视图制作任何模板之前在浏览器中打开页面时，我可以看到当前用户的视频（不是所有视频）。

# inside 'users' app
class UserVideosListView(ListView):
    model = Video
    template_name = "users/user_videos.html"
    context_object_name = 'videos'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['videos'] = Video.objects.filter(author=self.request.user)
        return context

---

# inside 'videos' app
class VideoListView(ListView):
    model = Video
    paginate_by = 25
    template_name = 'videos/video_list.html'
    context_object_name = 'videos'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['videos'] = Video.published_videos.all()
        return context

附：我确定我输入的 URL 是最新的，并且“用户”目录中没有模板

Answer 1

Django 渲染 videos/video_list.html 因为ListView 基于MultipleObjectTemplateResponseMixin 和BaseListView：

class ListView(MultipleObjectTemplateResponseMixin, BaseListView):
    """
    Render some list of objects, set by `self.model` or `self.queryset`.
    `self.queryset` can actually be any iterable of items, not just a queryset.
    """

在MultipleObjectTemplateResponseMixin（GitHub）内，模板名也是根据model生成的。

# If the list is a queryset, we'll invent a template name based on the
# app and model name. This name gets put at the end of the template
# name list so that user-supplied names override the automatically-
# generated ones.
if hasattr(self.object_list, 'model'):
    opts = self.object_list.model._meta
    names.append("%s/%s%s.html" % (opts.app_label, opts.model_name, self.template_name_suffix))

Django docs 说MultipleObjectTemplateResponseMixin：

模板名称后缀

附加到自动生成的候选模板名称的后缀。默认后缀为 _list。

get_template_names()

返回候选模板名称列表。返回以下列表：

• 视图上 template_name 的值（如果提供）
• /.html

---

我建议你重写 get_queryset() 方法而不是 get_context_data()

class UserVideosListView(ListView):
    model = Video
    context_object_name = 'videos'
    ...

    def get_queryset(self):
        return super().get_queryset().filter(author=self.request.user))