python - django PermissionRequiredMixin权限不起作用

Views.py

class templateList(PermissionRequiredMixin, TemplateView):
    permission_required = 'accounts.template_all'

    def get(self, request, *args, **kwargs):
        #view logic
        print(self.request.user.has_perms('accounts.template_all'))
        return render(request, template_name, context)

account / models.py

class User(AbstractBaseUser, PermissionsMixin):
    # some fields here
    class Meta:
        verbose_name = _('user')
        verbose_name_plural = _('users')

        permissions = (
            ("template_all", "access to all templates"),
        )

ViewName .___ mro____

(<class 'template.views.templateList'>, <class 'django.contrib.auth.mixins.PermissionRequiredMixin'>, <class 'django.contrib.auth.mixins.AccessMixin'>, <class 'django.views.generic.base.TemplateView'>, <class 'django.views.generic.base.TemplateResponseMixin'>, <class 'django.views.generic.base.ContextMixin'>, <class 'django.views.generic.base.View'>, <class 'object'>)

views.py中的self.request.user.has_perms('accounts.template_all')返回正确的布尔值，但是，self.has_permission()每次都返回True。 permission_required没有任何效果，即使打印返回false，用户仍然可以看到页面。 self.get_permission_required alos返回正确的值。帮助表示赞赏。

最佳答案

简而言之：PermissionRequiredMixin基类应该放在TemplateView基类之前，这样MRO才是正确的，并且调度点指向PermissionRequiredMixin的替代。

PermissionRequiredMixin修补dispatch(..)方法（好吧，它添加了额外的检查，以查看用户是否具有适当的权限）。但是，在这里，您按顺序放置了子类，导致dispatch(..)函数是View类中的一个。

确实，如果我们看一下MRO，我们会看到：

>>> ViewName.__mro__
(<class 'ViewName'>, <class 'django.views.generic.base.TemplateView'>, <class 'django.views.generic.base.TemplateResponseMixin'>, <class 'django.views.generic.base.ContextMixin'>, <class 'django.views.generic.base.View'>, <class 'django.contrib.auth.mixins.PermissionRequiredMixin'>, <class 'django.contrib.auth.mixins.AccessMixin'>, <class 'object'>)

如果我们看一下调用.dispatch(..)时所调用的方法，我们会看到：

>>> ViewName.dispatch
<function View.dispatch at 0x7f169e8f6620>

为了让mixin覆盖原始的.dispatch(..)函数，我们需要将其放在基类中，例如：

# PermissionRequiredMixin is put before TemplateView

class ViewName(PermissionRequiredMixin, TemplateView):
    permission_required = 'accounts.action_all'
    # ...

然后，我们看到：

>>> ViewName.__mro__
(<class 'ViewName'>, <class 'django.contrib.auth.mixins.PermissionRequiredMixin'>, <class 'django.contrib.auth.mixins.AccessMixin'>, <class 'django.views.generic.base.TemplateView'>, <class 'django.views.generic.base.TemplateResponseMixin'>, <class 'django.views.generic.base.ContextMixin'>, <class 'django.views.generic.base.View'>, <class 'object'>)
>>> ViewName.dispatch
<function PermissionRequiredMixin.dispatch at 0x7f168b41d620>

关于python - django PermissionRequiredMixin权限不起作用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/54959548/