Tastypie:我想获得像"/ places/{PLACE_ID}/comments"这样的项目,但是怎么样？

Question

假设我想得到关于某个地方的评论.我想提出这个要求:

/地/ {} PLACE_ID /评论

我怎么能用TastyPie做到这一点？

Answer 1

按照Tastypie的文档中的示例,在您的places资源中添加以下内容:

class PlacesResource(ModelResource):

    # ...

    def prepend_urls(self):
        return [
            url(r"^(?P<resource_name>%s)/(?P<pk>\w[\w/-]*)/comments%s$" % (self._meta.resource_name, trailing_slash()), self.wrap_view('get_comments'), name="api_get_comments"),
    ]

    def get_comments(self, request, **kwargs):
        try:
            obj = self.cached_obj_get(request=request, **self.remove_api_resource_names(kwargs))
        except ObjectDoesNotExist:
            return HttpGone()
        except MultipleObjectsReturned:
            return HttpMultipleChoices("More than one resource is found at this URI.")

        # get comments from the instance of Place 
        comments = obj.comments # the name of the field in "Place" model

        # prepare the HttpResponse based on comments
        return self.create_response(request, comments)           
     # ...

我们的想法是在/places/{PLACE_ID}/commentsURL和资源方法之间定义URL映射(get_comments()在本例中).该方法应返回一个实例,HttpResponse但您可以使用Tastypie提供的方法进行所有处理(包装create_response()).我建议你看看tastypie.resources模块,看看Tastypie如何处理请求,特别是列表.