是否可以使用login_required在django urls中装饰include(...)? [英] Is it possible to decorate include(...) in django urls with login_required?
问题描述
我在网站上有几个限制区域,我想为此指定 login_required
装饰器。但是,我希望这样做一次包含在主要的urls.py中,而不是每个url中包含的urls.py
所以而不是:
/private/urls.py:
(r'^ profile / $',login_required (个人资料)),
我会做一些事情:
/urls.py
urlpatterns = patterns('',
...
(r'^ private /',login_required(include('private'))),
)
不幸的是,它不起作用。
解决方案#1
第一个片段由棉花替代 RegexURLPattern
和 RegexURLResolver
与自定义实现在解决
调用期间注入装饰器。
from django.core.urlresolvers导入RegexURLPattern,RegexURLResolver
from django.conf.urls.defaults import patterns,url,include
from django.contrib import admin
from myproject.myapp.decorators import superuser_required
class DecoratedURLPattern(RegexURLPattern):
def resolve(self,* args,** kwargs):
result = super(DecoratedURLPattern,self).resolve(* args,** kwargs)
如果结果:
result.func = self._decorate_with(result.func)
返回结果
类DecoratedRegexURLResolver(RegexURLResolver):
def resolve(self,* args,** kwargs):
resul t = super(DecoratedRegexURLResolver,self).resolve(* args,** kwargs)
if result:
result.func = self._decorate_with(result.func)
return result
def decorated_includes(func,includes,* args,** kwargs):
urlconf_module,app_name,namespace = includes
for urlconf_module中的项目:
if isinstance (item,RegexURLPattern):
item .__ class__ = DecoratedURLPattern
item._decorate_with = func
elif isinstance(item,RegexURLResolver):
item .__ class__ = DecoratedRegexURLResolver
item._decorate_with = func
返回urlconf_module,app_name,命名空间
你需要这样使用:
urlpatterns = patterns('',
#...
(r'^ private /',decorated_includes(login_required,include(private.urls))),
)
(注意 include
参数不能是使用此方法的字符串。)
解决方案#2
我最后使用我的 sjzabel 的另一个解决方案是应用于em>外部 模式
调用,因此它可以与字符串一起使用,并且语法略有不同。这个想法是一样的。
def required(wrapped_functions,patterns_rslt):
'''
用于在url树返回的任何视图中要求1..n装饰器
用法:
urlpatterns =必需(func,patterns(...))
urlpatterns =需要((func,func,func),pattern(...))
注意:
使用functools.partial将关键字参数传递到所需的
装饰器。如果您需要传递参数,则必须编写
包装函数。
示例:
从functools import partial
urlpatterns =必需(
partial(login_required,login_url ='/ accounts / login /'),
模式(...)
)
'''
如果不是hasattr(wrapped_functions,'__ iter__'):
wrapped_functions =(wrapped_functions,)
return [
_wrap_instance__resolve(wrapped_functions,instance)
,例如pattern_rslt
]
def _wrap_instance__resolve(wrapped_functions,instance):
if不是hasattr(instance,'resolve'):return instance
resolve = getattr(instance,'resolve')
def _wrap_func_in_returned_resolver_match(* args,** kwargs):
rslt = resolve(* args,** kwargs)
如果不是hasattr(rslt,'func'):return rslt
f = getattr(rslt,'func')
for _f in revers(wrapped_function):
#@decorate函数从内到外
f = _f(f)
setattr(rslt,'func',f)
return rslt
setattr(instance,'resolve',_ wrap_func_in_returned_resolver_match)
return instance
它像这样:
urlpatterns = patterns('',
#...
)
urlpatterns + =必需(
login_required,
模式('',
(r'^ private /',include('private.urls'))
)
)
两者都可以正常工作,但我更喜欢后一种语法。
I have a few restricted areas on the site, for which I would like to specify login_required
decorator. However I would like to do that once per inclusion in main urls.py, not per individual url in included urls.py
So instead of:
/private/urls.py:
(r'^profile/$', login_required(profile)),
I'd do something along the lines:
/urls.py
urlpatterns = patterns('',
...
(r'^private/', login_required(include('private'))),
)
Except that it doesn't work, unfortunately.
It is doable, and in fact I just found two snippets for this.
Solution #1
The first snippet by cotton substitutes RegexURLPattern
and RegexURLResolver
with custom implementations that inject given decorator during resolve
call.
from django.core.urlresolvers import RegexURLPattern, RegexURLResolver
from django.conf.urls.defaults import patterns, url, include
from django.contrib import admin
from myproject.myapp.decorators import superuser_required
class DecoratedURLPattern(RegexURLPattern):
def resolve(self, *args, **kwargs):
result = super(DecoratedURLPattern, self).resolve(*args, **kwargs)
if result:
result.func = self._decorate_with(result.func)
return result
class DecoratedRegexURLResolver(RegexURLResolver):
def resolve(self, *args, **kwargs):
result = super(DecoratedRegexURLResolver, self).resolve(*args, **kwargs)
if result:
result.func = self._decorate_with(result.func)
return result
def decorated_includes(func, includes, *args, **kwargs):
urlconf_module, app_name, namespace = includes
for item in urlconf_module:
if isinstance(item, RegexURLPattern):
item.__class__ = DecoratedURLPattern
item._decorate_with = func
elif isinstance(item, RegexURLResolver):
item.__class__ = DecoratedRegexURLResolver
item._decorate_with = func
return urlconf_module, app_name, namespace
You need to use it like this:
urlpatterns = patterns('',
# ...
(r'^private/', decorated_includes(login_required, include(private.urls))),
)
(Note that include
parameter can't be a string with this method.)
Solution #2
Another solution by sjzabel, which I ended up using myself, is applied outside patterns
call so it can be used with strings and has a slightly different syntax. The idea is the same, though.
def required(wrapping_functions,patterns_rslt):
'''
Used to require 1..n decorators in any view returned by a url tree
Usage:
urlpatterns = required(func,patterns(...))
urlpatterns = required((func,func,func),patterns(...))
Note:
Use functools.partial to pass keyword params to the required
decorators. If you need to pass args you will have to write a
wrapper function.
Example:
from functools import partial
urlpatterns = required(
partial(login_required,login_url='/accounts/login/'),
patterns(...)
)
'''
if not hasattr(wrapping_functions,'__iter__'):
wrapping_functions = (wrapping_functions,)
return [
_wrap_instance__resolve(wrapping_functions,instance)
for instance in patterns_rslt
]
def _wrap_instance__resolve(wrapping_functions,instance):
if not hasattr(instance,'resolve'): return instance
resolve = getattr(instance,'resolve')
def _wrap_func_in_returned_resolver_match(*args,**kwargs):
rslt = resolve(*args,**kwargs)
if not hasattr(rslt,'func'):return rslt
f = getattr(rslt,'func')
for _f in reversed(wrapping_functions):
# @decorate the function from inner to outter
f = _f(f)
setattr(rslt,'func',f)
return rslt
setattr(instance,'resolve',_wrap_func_in_returned_resolver_match)
return instance
Call it like this:
urlpatterns = patterns('',
# ...
)
urlpatterns += required(
login_required,
patterns('',
(r'^private/', include('private.urls'))
)
)
Both work fine but I prefer the latter syntax.
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