django.contrib.auth.middleware.pyÖÐ


class LazyUser(object):
    def __get__(self, request, obj_type=None):
        if not hasattr(request, '_cached_user'):
            from django.contrib.auth import get_user
            request._cached_user = get_user(request)
        return request._cached_user


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On 5/15/07, leopay <leopay在gmail.com> wrote:
> django.contrib.auth.middleware.py中
>
>
> class LazyUser(object):
>     def __get__(self, request, obj_type=None):
>         if not hasattr(request, '_cached_user'):
>             from django.contrib.auth import get_user
>             request._cached_user = get_user(request)
>         return request._cached_user
>
>
> 这个__get__函数的参数request是怎样传递进去的？

是由django的server调度程序调用和传递的。参见django/core/handlers/ base.py

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On 5/15/07, leopay <leopay at gmail.com> wrote:
>
> django.contrib.auth.middleware.py中
>
>
> class LazyUser(object):
>     def __get__(self, request, obj_type=None):
>         if not hasattr(request, '_cached_user'):
>             from django.contrib.auth import get_user
>             request._cached_user = get_user(request)
>         return request._cached_user
>
>
> 这个__get__函数的参数request是怎样传递进去的？
>
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> python-chinese
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把 descriptor 附给 request 的 class 对象，
request.__class__.user =  LazyUser()
随后访问
request.user
就等价于：
request.__class__.user.__get__(request, request.__class__)
就是这么传进去的。

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