Tastypie:我想要获得像“/ places / {PLACE_ID”/ comments“但是怎么样? [英] Tastypie: I want to get items like "/places/{PLACE_ID}/comments" but how?
问题描述
/ places / {PLACE_ID} / comments
如何用TastyPie做这个?
按照 Tastypie的文档,并将这样添加到您的位置
资源:
class PlacesResource(ModelResource):
#...
def prepend_urls(self):
return [
url(r^(?P< resource_name>%s)/(?P< pk> \w [\w / - ] *)/ comments%s $% self._meta.resource_name,trailing_slash()),self.wrap_view('get_comments'),name =api_get_comments),
]
def get_comments(self,request,** kwargs )
try:
obj = self.cached_obj_get(request = request,** self.remove_api_resource_names(kwargs))
除了ObjectDoesNotExist:
return HttpGone()
除了MultipleObjectsReturned:
return HttpMultipleChoices(多个资源e)找到这个URI。)
#从Place
评论= obj.comments的实例获取注释#Place模型中的字段名称
#根据注释准备HttpResponse
return self.create_response(请求,注释)
#...
这个想法是您在 / places / {PLACE_ID} / comments
URL和您的资源的方法之间定义一个url映射(在这个例子中 get_comments()
)。该方法应该返回一个 HttpResponse
的实例,但是您可以使用Tastypie提供的方法来执行所有处理(由 create_response()
)。我建议您查看 tastypie.resources
模块,看看Tastypie如何处理请求,特别是列表。
Let's say I want to get comments about a place. I want to make this request:
/places/{PLACE_ID}/comments
How can I do this with TastyPie?
Follow the example in Tastypie's docs and add something like this to your places
resource:
class PlacesResource(ModelResource):
# ...
def prepend_urls(self):
return [
url(r"^(?P<resource_name>%s)/(?P<pk>\w[\w/-]*)/comments%s$" % (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)
# ...
The idea is that you define a url mapping between the /places/{PLACE_ID}/comments
URL and a method of your resource (get_comments()
in this example). The method should return an instance of HttpResponse
but you can use methods offered by Tastypie to do all the processing (wrapped by create_response()
). I suggest you take a look at tastypie.resources
module and see how Tastypie processes requests, in particular lists.
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