django-piston:正确格式化来自客户端应用程序的 POST 数据
我有一个 Django 应用程序第一次运行 django-piston。
我已经为模型配置了一个处理程序,并且它已针对 GET 和 POST 进行了配置。
GET 工作正常。经过尝试,确实如此。
然而 POST 很糟糕。当我向它发布数据时,我收到此错误,
Responded: Piston/0.2.3rc1 (Django 1.2.4) crash report:
Method signature does not match.
Resource does not expect any parameters.
Exception was: cannot concatenate 'str' and 'dict' objects
我真的不是 Python 专业人士,但一些基本的谷歌搜索显示,这似乎是一个相当通用的 Python TypeError
所以这里有一些代码。
urls.py(相关部分)
auth = DjangoAuthentication()
ad = { 'authentication': auth }
word_handler = Resource(handler = WordHandler, **ad)
urlpatterns = patterns(
url(r'^word/(?P<word_id>[^/]+)/', word_handler),
url(r'^words/', word_handler),
)
handlers.py(相关部分)
class WordHandler(BaseHandler):
allowed_methods = ('GET','POST',)
model = Word
fields = ('string', 'id', 'sort_order', ('owner', ('id',)),)
def read(self, request, word_id = None):
"""
Read code goes here
"""
def create(self, request):
if request.content_type:
data = request.data
print("Words Data: " + data)
existing_words = Word.objects.filter(owner = request.user)
for word in data['words']:
word_already_exists = False
for existing_word in existing_words:
if word["string"] == existing_word.string:
word_already_exists = True
break
if not word_already_exists:
Word(string = word["string"], owner = request.user).save()
return rc.CREATED
基本上它甚至根本没有进入 create() ,或者至少看起来没有。它只是因上述错误而崩溃,所以我什至看不到它是如何接收数据的。
就为了它,这是我试图发布的数据
{"words":[{"owner":{"id":1,"tags":null,"password":null,"words":null,"email":null,"firstname":null,"lastname":null,"username":null},"id":1,"sort_order":0,"tags":null,"string":"Another Test"},{"owner":{"id":1,"tags":null,"password":null,"words":null,"email":null,"firstname":null,"lastname":null,"username":null},"id":2,"sort_order":0,"tags":null,"string":"Here's a test"},{"owner":null,"id":0,"sort_order":0,"tags":null,"string":"Tampa"}]}
任何信息都会非常有帮助。
I have a Django app running django-piston for the first time.
I've got a handler configured for a model and it's rigged for GET and POST.
GET works fine. Tried and true.
POST however is sucking. When I post data to it, I am getting this error
Responded: Piston/0.2.3rc1 (Django 1.2.4) crash report:
Method signature does not match.
Resource does not expect any parameters.
Exception was: cannot concatenate 'str' and 'dict' objects
I'm really not a pro at Python but some basic Googling reveals that this seems to be a rather generic Python TypeError
So here's some code.
urls.py (relevant parts)
auth = DjangoAuthentication()
ad = { 'authentication': auth }
word_handler = Resource(handler = WordHandler, **ad)
urlpatterns = patterns(
url(r'^word/(?P<word_id>[^/]+)/', word_handler),
url(r'^words/', word_handler),
)
handlers.py (relevant parts)
class WordHandler(BaseHandler):
allowed_methods = ('GET','POST',)
model = Word
fields = ('string', 'id', 'sort_order', ('owner', ('id',)),)
def read(self, request, word_id = None):
"""
Read code goes here
"""
def create(self, request):
if request.content_type:
data = request.data
print("Words Data: " + data)
existing_words = Word.objects.filter(owner = request.user)
for word in data['words']:
word_already_exists = False
for existing_word in existing_words:
if word["string"] == existing_word.string:
word_already_exists = True
break
if not word_already_exists:
Word(string = word["string"], owner = request.user).save()
return rc.CREATED
Basically it's not even getting to create() at all, or at least it seems not to. It just craps out with the aforementioned error, so I can't even see how it's receiving the data.
And just for the hell of it, here's the data I am trying to POST
{"words":[{"owner":{"id":1,"tags":null,"password":null,"words":null,"email":null,"firstname":null,"lastname":null,"username":null},"id":1,"sort_order":0,"tags":null,"string":"Another Test"},{"owner":{"id":1,"tags":null,"password":null,"words":null,"email":null,"firstname":null,"lastname":null,"username":null},"id":2,"sort_order":0,"tags":null,"string":"Here's a test"},{"owner":null,"id":0,"sort_order":0,"tags":null,"string":"Tampa"}]}
Any information at all would be extremely helpful.
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我自己解决了这个问题。
错误的相关原因是 create 方法中的这一行
,它的计算结果并不为 True,正如我认为 django-piston 文档的创建者所希望的那样。即使该值是一个带有值的字符串。
删除这一行解决了它。我确信您可以只进行字符串评估。
不太确定他们在那里想什么。
I solved this for myself.
The relevant cause of the error is this line in the create method
which does not evaluate as
True
as I think the creators of the django-piston documentation intended. Even if the value is a string with a value.Removing this line solved it. And I'm sure you can probably just do a string evaluation.
Not really sure what they were thinking there.