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Is it possible to create a default object in tastypie? I'd like to create an object the first time it's retrieved through the REST api, so there's always a returned value. I could do this in dehydrate, but I also need to take into account GET parameters to create the object. What would be the best method to overload and how can I related objects (which the GET parameter refers to)?

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2 回答 2

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我可能找到了“一个”解决方案。

在ModelResource中，我超载obj_get_list：

def obj_get_list(self, bundle, **kwargs):
    if bundle.request.method == 'GET':
        related_id = bundle.request.GET['entity']
        # create new object if it doesn't exist and populate with `related_id`
        # ...
    objects = ModelResource.obj_get_list(self, bundle, **kwargs)
    return objects

调用它的 url 将有一个 GET 参数/url/to/resource?entity=1。

这个解决方案有什么问题吗？谁能预见不良副作用？

于 2013-07-06T08:29:13.683 回答
0

另一种方法是覆盖 obj_get 函数。

def obj_get(self, bundle, **kwargs):
    pk = kwargs['pk']
    if pk.startswith('identifier'):
        pk = pk.replace("identifier/", "")
        instance, created = Model.objects.get_or_create(identifier=pk)
        kwargs['pk'] = str(instance.pk)

    return super().obj_get(bundle, **kwargs)

这允许具有以下格式的 URL：/url/to/resource/identifier/*some_identifier*

于 2018-06-12T09:10:13.037 回答