Question

仅当请求作者与实例作者相同时，我才想更新模型的实例。

我猜可以在更新方法中做到这一点

def update(self, request, *args, **kwargs):
    if request.user == self.get_object().user
        do_things()

我该怎么办？是否必须在每个ModelViewSet或ListAPIView上编写更新？还是有一种方法可以编写自定义权限来实现此目的。

Answer 1

您可以实现custom permission。以下示例来自docs，并进行了修改以适合您的用例：

from rest_framework import permissions

class IsOwnerOrReadOnly(permissions.BasePermission):
    """
    Object-level permission to only allow owners of an object to edit it.
    Assumes the model instance has an `user` attribute.
    """

    def has_object_permission(self, request, view, obj):
        # Read permissions are allowed to any request,
        # so we'll always allow GET, HEAD or OPTIONS requests.
        if request.method in permissions.SAFE_METHODS:
            return True

        # Instance must have an attribute named `user`.
        return obj.user == request.user

在Django REST中更新作者的实例

1 个答案: