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[英]Django - user_passes_test auth decorator - 'bool' object is not callable
[英]How to pass Django request object in user_passes_test decorator callable function
我正在使用Django user_passes_test装饰器来检查用户权限。
@user_passes_test(lambda u: has_add_permission(u, "project"))
def create_project(request):
......
我正在调用一个回调函数has_add_permission,它接受两个参数User和一个String。 我想传递请求对象是否可能? 另外,任何人都可以告诉我,我们如何直接访问装饰器内的User对象。
不,您无法将请求传递给user_passes_test
。 要了解它为什么以及如何工作,请转到源代码 :
def user_passes_test(test_func, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME):
"""
Decorator for views that checks that the user passes the given test,
redirecting to the log-in page if necessary. The test should be a callable
that takes the user object and returns True if the user passes.
"""
def decorator(view_func):
@wraps(view_func, assigned=available_attrs(view_func))
def _wrapped_view(request, *args, **kwargs):
if test_func(request.user):
return view_func(request, *args, **kwargs)
path = request.build_absolute_uri()
# If the login url is the same scheme and net location then just
# use the path as the "next" url.
login_scheme, login_netloc = urlparse.urlparse(login_url or
settings.LOGIN_URL)[:2]
current_scheme, current_netloc = urlparse.urlparse(path)[:2]
if ((not login_scheme or login_scheme == current_scheme) and
(not login_netloc or login_netloc == current_netloc)):
path = request.get_full_path()
from django.contrib.auth.views import redirect_to_login
return redirect_to_login(path, login_url, redirect_field_name)
return _wrapped_view
return decorator
这是user_passes_test
装饰器背后的代码。 正如您所看到的,传递给装饰器的测试函数(在您的情况下, lambda u: has_add_permission(u, "project")
)只传递一个参数request.user
。 现在,当然可以编写自己的装饰器(甚至直接复制此代码并只修改它)来传递request
本身,但是你不能使用默认的user_passes_test
实现。
请注意,Django 1.9引入了UserPassesTestMixin
,它使用方法test_func
作为测试函数。 这意味着请求在self.request
可用。 所以你可以这样做:
class MyView(UserPassesTestMixin, View):
def test_func(self):
return has_add_permission(self.request.user, self.request)
但这仅适用于基于类的视图。
我发现编辑user_passes_test
让装饰函数按request
运行而不是request.user
不要太难。 我在这个关于视图装饰器装饰器的博客文章中有一个简短的版本,但对于后代,这是我完整编辑的代码:
def request_passes_test(test_func, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME):
"""
Decorator for views that checks that the request passes the given test,
redirecting to the log-in page if necessary. The test should be a callable
that takes the request object and returns True if the request passes.
"""
def decorator(view_func):
@wraps(view_func, assigned=available_attrs(view_func))
def _wrapped_view(request, *args, **kwargs):
if test_func(request):
return view_func(request, *args, **kwargs)
path = request.build_absolute_uri()
# urlparse chokes on lazy objects in Python 3, force to str
resolved_login_url = force_str(
resolve_url(login_url or settings.LOGIN_URL))
# If the login url is the same scheme and net location then just
# use the path as the "next" url.
login_scheme, login_netloc = urlparse(resolved_login_url)[:2]
current_scheme, current_netloc = urlparse(path)[:2]
if ((not login_scheme or login_scheme == current_scheme) and
(not login_netloc or login_netloc == current_netloc)):
path = request.get_full_path()
from django.contrib.auth.views import redirect_to_login
return redirect_to_login(
path, resolved_login_url, redirect_field_name)
return _wrapped_view
return decorator
我做的唯一事情就是改变if test_func(request.user):
if test_func(request):
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