在 Django Rest Framework 中创建或更新(使用 PUT) [英] Create or Update (with PUT) in Django Rest Framework

问题描述

我有一个有主键的模型 id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False).

I have a model which has has an primary key id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False).

当一个 PUT 请求被发送到资源的端点 /api/v1/resource/<id>.json 我想创建 如果资源不存在，则使用提供的 id 的新资源.

When a PUT request is sent to the resource's endpoint /api/v1/resource/<id>.json I would like to create a new resource with the supplied id if the resource does not already exist.

注意:我使用 ModelViewSet 和 ModelSerializer

最优雅的方法是什么?

推荐答案

我最终覆盖了 ModelViewSet 中的 get_object() 方法:

I ended up overriding the get_object() method in my ModelViewSet:

class ResourceViewSet(viewsets.ModelViewSet):
    """
    This endpoint provides `create`, `retrieve`, `update` and `destroy` actions.
    """
    queryset = Resource.objects.all()
    serializer_class = ResourceSerializer

    def get_object(self):
        if self.request.method == 'PUT':
            resource = Resource.objects.filter(id=self.kwargs.get('pk')).first()
            if resource:
                return resource
            else:
                return Resource(id=self.kwargs.get('pk'))
        else:
            return super(ResourceViewSet, self).get_object()

也许有更优雅的方式来做到这一点?

Perhaps there's a more elegant way of doing this?

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