假设我想获得关于某个地方的评论。我想提出这个要求:
/places/{PLACE_ID}/评论
我怎么能用 TastyPie 做到这一点?
按照Tastypie's docs中的示例,在您的places
资源中添加如下内容:
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)
# ...
这个想法是您在/places/{PLACE_ID}/comments
URL 和资源的方法之间定义一个 url 映射(get_comments()
在此示例中)。该方法应该返回一个实例,HttpResponse
但您可以使用 Tastypie 提供的方法来完成所有处理(由 包装create_response()
)。我建议你看一下tastypie.resources
模块,看看 Tastypie 如何处理请求,特别是列表。