[英]I get a 400 Bad Request error while using django-piston
I am trying to use Piston to provide REST support to Django. 我正在尝试使用Piston为Django提供REST支持。 I have implemented my handlers as per the documentation provided .
我根据提供的文档实现了我的处理程序。 The problem is that i can "read" and "delete" my resource but i cannot "create" or "update".
问题是我可以“读取”和“删除”我的资源,但我无法“创建”或“更新”。 Each time i hit the relevant api i get a 400 Bad request Error.
每次我点击相关的api我得到400 Bad request Error。
I have extended the Resource class for csrf by using this commonly available code snippet: 我已经使用这个常用的代码片段扩展了csrf的Resource类:
class CsrfExemptResource(Resource):
"""A Custom Resource that is csrf exempt"""
def __init__(self, handler, authentication=None):
super(CsrfExemptResource, self).__init__(handler, authentication)
self.csrf_exempt = getattr(self.handler, 'csrf_exempt', True)
My class (code snippet) looks like this: 我的类(代码片段)看起来像这样:
user_resource = CsrfExemptResource(User)
class User(BaseHandler):
allowed_methods = ('GET', 'POST', 'PUT', 'DELETE')
@require_extended
def create(self, request):
email = request.GET['email']
password = request.GET['password']
phoneNumber = request.GET['phoneNumber']
firstName = request.GET['firstName']
lastName = request.GET['lastName']
self.createNewUser(self, email,password,phoneNumber,firstName,lastName)
return rc.CREATED
Please let me know how can i get the create method to work using the POST operation? 请让我知道如何使用POST操作使create方法工作?
This is happening because Piston doesn't like the fact that ExtJS is putting "charset=UTF-8" in the content-type of the header. 这种情况正在发生,因为Piston不喜欢ExtJS在标题的内容类型中放置“charset = UTF-8”这一事实。
Easily fixed by adding some middleware to make the content-type a bit more Piston friendly, create a file called middleware.py in your application base directory: 通过添加一些中间件来轻松修复,使内容类型更加活塞友好,在应用程序基目录中创建一个名为middleware.py的文件:
class ContentTypeMiddleware(object):
def process_request(self, request):
if request.META['CONTENT_TYPE'] == 'application/x-www-form-urlencoded; charset=UTF-8':
request.META['CONTENT_TYPE'] = 'application/x-www-form-urlencoded'
return None
Then simply include this middleware in your settings.py: 然后只需在settings.py中包含此中间件:
MIDDLEWARE_CLASSES = (
'appname.middleware.ContentTypeMiddleware',
)
Proposed solutions still did not work for me (django 1.2.3/piston 0.2.2) so I've tweaked joekrell solution and this finally works (I'm only using POST and PUT, but presumably you can add other verbs to the list): 建议的解决方案仍然不适合我(django 1.2.3 /活塞0.2.2)所以我调整了joekrell解决方案,这最终工作(我只使用POST和PUT,但可能你可以添加其他动词到列表):
class ContentTypeMiddleware(object):
def process_request(self, request):
if request.method in ('POST', 'PUT'):
# dont break the multi-part headers !
if not 'boundary=' in request.META['CONTENT_TYPE']:
del request.META['CONTENT_TYPE']
with: 有:
MIDDLEWARE_CLASSES = (
'appname.middleware.ContentTypeMiddleware',
)
I haven't noticed any side-effect, but I can't promise it's bullet-proof. 我没有注意到任何副作用,但我不能保证它是防弹的。
I have combined some of what other people have said, and added support for any content type, json for instance... 我结合了其他人所说的一些内容,并添加了对任何内容类型的支持,例如json ......
class ContentTypeMiddleware(object):
def process_request(self, request):
if request.method in ('POST', 'PUT') and request.META['CONTENT_TYPE'].count(";") > 0:
request.META['CONTENT_TYPE'] = [c.strip() for c in request.META['CONTENT_TYPE'].split(";") ][0]
return None
I thought Eric's solution worked the best but then ran into problems when saving things in admin. 我认为Eric的解决方案效果最好,但在管理员中保存时会遇到问题。 This tweak seems to fix it if anyone else comes across it:
如果有其他人遇到它,这个调整似乎解决了它:
class ContentTypeMiddleware(object):
def process_request(self, request):
if request.method in ('POST') and not 'boundary=' in request.META['CONTENT_TYPE']:
request.META['CONTENT_TYPE'] = [c.strip() for c in request.META['CONTENT_TYPE'].split(";") ][0]
return None
This is solution which worked for me, after a tweak: 经过调整后,这个解决方案对我有用:
class ContentTypeMiddleware(object):
def process_request(self, request):
if 'charset=UTF-8' in request.META['CONTENT_TYPE']:
request.META['CONTENT_TYPE'] = request.META['CONTENT_TYPE'].replace('; charset=UTF-8','')
return None
In utils.py, change this. 在utils.py中,更改此设置。
def content_type(self):
"""
Returns the content type of the request in all cases where it is
different than a submitted form - application/x-www-form-urlencoded
"""
type_formencoded = "application/x-www-form-urlencoded"
ctype = self.request.META.get('CONTENT_TYPE', type_formencoded)
if ctype.strip().lower().find(type_formencoded) >= 0:
return None
return ctype
https://bitbucket.org/jespern/django-piston/issue/87/split-charset-encoding-form-content-type https://bitbucket.org/jespern/django-piston/issue/87/split-charset-encoding-form-content-type
We had a resource that was simply updating a timestamp based on the request credentials and PUT. 我们有一个资源只是根据请求凭据和PUT更新时间戳。 It turns out that Piston does not like PUT without a payload.
事实证明,活塞不喜欢没有有效载荷的PUT。 Adding an empty string payload '' fixed it.
添加空字符串有效负载''修复它。
A quick Google search indicates that other systems like Apache may not like PUT without a payload, as well. 一个快速的谷歌搜索表明,像Apache这样的其他系统也可能不喜欢没有有效载荷的PUT。
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