如何在 Django 中进行用户的 DetailView？

Question

我目前有一个 DetailView 用于 Django 的内置 User。

url(
    r'^users/(?P<pk>\d+)/$',
    DetailView.as_view(
        model = User,
        template_name = 'doors/users/detail.html'
    ),
    name = 'users_detail'
)

但是当我在模板中访问user 时，它会显示当前登录 用户，而不是我从DetailUser 传递的具有pk 的用户。我是否需要告诉DetailUser 将user 变量重命名为其他名称？如果是这样，我该怎么做？

Answer 1

django.contrib.auth.context_processors.auth 将 {{ user }} 模板上下文变量设置为 request.user 或 AnonymousUser。因此，它会覆盖您的 DetailView 创建的 {{ user }} 上下文变量：

def auth(request):
    """
    Returns context variables required by apps that use Django's authentication
    system.

    If there is no 'user' attribute in the request, uses AnonymousUser (from
    django.contrib.auth).
    """
    # If we access request.user, request.session is accessed, which results in
    # 'Vary: Cookie' being sent in every request that uses this context
    # processor, which can easily be every request on a site if
    # TEMPLATE_CONTEXT_PROCESSORS has this context processor added.  This kills
    # the ability to cache.  So, we carefully ensure these attributes are lazy.
    # We don't use django.utils.functional.lazy() for User, because that
    # requires knowing the class of the object we want to proxy, which could
    # break with custom auth backends.  LazyObject is a less complete but more
    # flexible solution that is a good enough wrapper for 'User'.
    def get_user():
        if hasattr(request, 'user'):
            return request.user
        else:
            from django.contrib.auth.models import AnonymousUser
            return AnonymousUser()

    return {
        'user': SimpleLazyObject(get_user),
        'messages': messages.get_messages(request),
        'perms':  lazy(lambda: PermWrapper(get_user()), PermWrapper)(),
    }  

您可以通过setting context_object_name 解决此问题。例如，这将启用 {{ user_object }} 上下文变量，设置为 DetailView 的用户：

url(
    r'^users/(?P<pk>\d+)/$',
    DetailView.as_view(
        model = User,
        template_name = 'doors/users/detail.html',
        context_object_name = 'user_object'
    ),
    name = 'users_detail'
)

深入挖掘，阅读get_context_object_name() 的文档。