限制对仅拥有内容的访问django

Question

我正在使用django-tastypie编写API。我有两个定制permisions问题，我希望django-guardian可以修复。

我有两个用户组临床医师和患者。临床医生应该能够访问属于他们患者的对象，并且患者应该只能够访问由他们自己创建的对象。

我的代码如下：

class UserResource(ModelResource): 
    class Meta: 
     queryset = User.objects.all() 
     resource_name = 'auth/user' 
     excludes = ['email', 'password', 'is_superuser'] 


class BlogPostResource(ModelResource): 
    author = fields.ToOneField(UserResource, 'author', full=True) 

    class Meta: 
     queryset = BlogPost.objects.all() 
     resource_name = 'posts' 
     allowed_methods = ["get", "post"] 
     # Add it here. 
     authentication = BasicAuthentication() 
     authorization = DjangoAuthorization() 
     filtering = { 
      'author': ALL_WITH_RELATIONS, 
     } 

我怎样才能使用权限来限制对这个BlogPostResource访问？

class CustomAuthorization(Authorization): 
    def apply_limits(self, request, object_list):  
     ... 
     clin_group = Group.objects.get(name='YOUR GROUP') 
     if request and hasattr(request, 'user'): 
      if clin_group in request.user.groups.all(): 
       object_list = object_list.filter(user__in=request.user.patients.all()) # or however you stop clinician>patient relation 
      else: 
       object_list = object_list.filter(user=request.user) 
     return object_list 

Answer 1

我根据我的离开answer的最终解决方案，从@JamesO：

Answer 2

你可以用自定义Authorization类实现这一点，例如像。他的回答的问题是它是在改写Authorization类之前写入老版本的django-tastypie的。这里是我的代码供将来参考：

from tastypie.authorization import Authorization 
from django.contrib.auth.models import Group 
from extendedusers.models import ExtendedUser 


class CustomAuthorization(Authorization): 
    def read_list(self, object_list, bundle): 
     clinician_group = Group.objects.get(name='clinician') 
     if bundle.request and hasattr(bundle.request, 'user'): 
      if clinician_group in bundle.request.user.groups.all(): 
       patients = ExtendedUser.objects.filter(clinician_id=bundle.request.user.id) 
       object_list = object_list.filter(author__id__in=patients) 
      else: 
       object_list = object_list.filter(author=bundle.request.user) 
      return object_list 
     else: 
      return object_list.none()