我的第一个问题:
所以我正在使用tastepie 为我的应用程序提供api。
我希望能够使用tastepie 呈现json,然后将其包含在django 视图中,以便我可以引导我的应用程序的数据。
在 django sweetpie 食谱中有一个例子:http: //django-tastypie.readthedocs.org/en/latest/cookbook.html#using-your-resource-in-regular-views
问题是我无法让它工作,我尝试了从更简单到更复杂的变体,但我无法得到它,这里有一些我的模型的代码:
class ChatMessage(models.Model):
content = models.TextField()
added = models.DateTimeField(auto_now_add=True)
author = models.ForeignKey(ChatUser, related_name="messages")
chat_session = models.ForeignKey(ChatSession, related_name="messages")
answer_to = models.ForeignKey('self', blank=True, null=True)
flagged = models.BooleanField(blank=True,default=False)
mododeleted = models.BooleanField(blank=True,default=False)
mododeleted_by = models.ForeignKey(ChatUser,blank=True,null=True,default=None)
mododeleted_at = models.DateTimeField(blank=True,null=True,default=None)
[...]
class ChatSession (models.Model):
title = models.CharField(max_length=200)
link_title = models.CharField(max_length=200)
description = tinymce_models.HTMLField()
date = models.DateTimeField()
online = models.BooleanField(default=False)
next_session = models.BooleanField(default=False)
meps = models.ManyToManyField(ChatMep)
uid_newsupdate = models.CharField(max_length=200,blank=True,null=True,default="")
[...]
和我的资源:
class ChatMessageResource(MyModelResource):
chat_session = fields.ForeignKey(ChatSessionResource, 'chat_session')
def renderOne(self,request,pkval):
data = self.obj_get(None,pk=pkval)
dbundle = self.build_bundle(obj=data,request=request)
return self.serialize(None,self.full_dehydrate(dbundle),'application/json')
def dehydrate(self, bundle):
bundle.data['likes'] = bundle.obj.get_likes()
bundle.data['likes_count'] = len(bundle.data['likes'])
return bundle
class Meta:
authentication = Authentication()
authorization = Authorization()
queryset = ChatMessage.objects.all()
resource_name = 'message'
fields = ('content', 'added', 'flagged', 'mododeleted','author','answer_to','chat_session')
filtering = {
'chat_session': ALL_WITH_RELATIONS,
}
和我的视图索引:
def index(request):
cur_sess = get_current_chat_session()
data1= ChatMessageResource().renderOne(request,723)
return render_to_response('test.html',
{
'all_data' : data1
},
context_instance=RequestContext(request))
我想要的是我的 renderOne() 函数来给我一个 ChatMessageResource 的 json 而且我想要一个 renderAll() 函数来为我提供 json 中的所有(或过滤的)ChatMessageResources。
而且我想使用美味的内部结构,我知道我可以自己序列化它,但这不是重点..
现在的错误是:
NoReverseMatch at /live/
Reverse for 'api_dispatch_detail' with arguments '()' and keyword arguments '{'pk': 14L, 'resource_name': 'session'}' not found.
我快疯了,我已经尝试了几个小时。
所以,请,如何在 django 视图中通过代码使用 nicepiepie 将 ONE/ALL 资源作为 JSON 获取!
如果不清楚或者我需要澄清,请询问,谢谢
我真正想要做的是能够获取我创建的 API url 返回的 JSON,但是从代码中,而不是通过访问 url .. 所以如果我有/api/v1/messages/?chat_session=14
返回消息列表,我希望能够通过代码执行相同的操作(而不是通过 curl 或其他方式获取 url)。
注意:ModelResource.obj_get 的定义来自https://github.com/toastdriven/django-tastypie/blob/master/tastypie/resources.py
def obj_get(self, request=None, **kwargs):
"""
A ORM-specific implementation of ``obj_get``.
Takes optional ``kwargs``, which are used to narrow the query to find
the instance.
"""
try:
base_object_list = self.get_object_list(request).filter(**kwargs)
object_list = self.apply_authorization_limits(request, base_object_list)
stringified_kwargs = ', '.join(["%s=%s" % (k, v) for k, v in kwargs.items()])
if len(object_list) <= 0:
raise self._meta.object_class.DoesNotExist("Couldn't find an instance of '%s' which matched '%s'." % (self._meta.object_class.__name__, stringified_kwargs))
elif len(object_list) > 1:
raise MultipleObjectsReturned("More than '%s' matched '%s'." % (self._meta.object_class.__name__, stringified_kwargs))
return object_list[0]
except ValueError:
raise NotFound("Invalid resource lookup data provided (mismatched type).")