Hello everyone, Thank you for reading this ! I am a 3 weeks newbie in django. I occurred a picklingerror when integrating qrcode payment(wechat payment) with django-oscar. *Steps cause the promblem:*
1. Add a product in basket and chose to pay directly; 2. Chose payment method; 3. Jump to preview page and press the “place order” button on it(which by normally will jump to scan code page which has a qrcode on it); *Error message:* it works well before, but since tomorrow it display picklingerror like this: PicklingError at /zh-cn/checkout/preview/ Can't pickle <type 'function'>: attribute lookup __builtin__.function failed *Traceback:* Environment: Request Method: POST Request URL: http://xiwen.proxy.qqbrowser.cc:8000/zh-cn/checkout/preview/ Django Version: 1.8.5 Python Version: 2.7.10 Installed Applications: ['django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.messages', 'django.contrib.admin', 'django.contrib.flatpages', 'django.contrib.staticfiles', 'django.contrib.sitemaps', 'django_extensions', 'debug_toolbar', 'apps.gateway', 'widget_tweaks', 'wcpay', 'oscar', 'oscar.apps.analytics', 'apps.checkout', 'oscar.apps.address', 'oscar.apps.shipping', 'oscar.apps.catalogue', 'oscar.apps.catalogue.reviews', 'oscar.apps.partner', 'oscar.apps.basket', 'oscar.apps.payment', 'oscar.apps.offer', 'oscar.apps.order', 'oscar.apps.customer', 'oscar.apps.promotions', 'oscar.apps.search', 'oscar.apps.voucher', 'oscar.apps.wishlists', 'oscar.apps.dashboard', 'oscar.apps.dashboard.reports', 'oscar.apps.dashboard.users', 'oscar.apps.dashboard.orders', 'oscar.apps.dashboard.promotions', 'oscar.apps.dashboard.catalogue', 'oscar.apps.dashboard.offers', 'oscar.apps.dashboard.partners', 'oscar.apps.dashboard.pages', 'oscar.apps.dashboard.ranges', 'oscar.apps.dashboard.reviews', 'oscar.apps.dashboard.vouchers', 'oscar.apps.dashboard.communications', 'oscar.apps.dashboard.shipping', 'haystack', 'treebeard', 'sorl.thumbnail', 'django_tables2'] Installed Middleware: ('django.contrib.sessions.middleware.SessionMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.contrib.flatpages.middleware.FlatpageFallbackMiddleware', 'django.middleware.locale.LocaleMiddleware', 'django.middleware.common.CommonMiddleware', 'oscar.apps.basket.middleware.BasketMiddleware') Traceback: File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in get_response 223. response = middleware_method(request, response) File "/Library/Python/2.7/site-packages/django/contrib/sessions/middleware.py" in process_response 50. request.session.save() File "/Library/Python/2.7/site-packages/django/contrib/sessions/backends/db.py" in save 59. session_data=self.encode(self._get_session(no_load= must_create)), File "/Library/Python/2.7/site-packages/django/contrib/sessions/backends/base.py" in encode 88. serialized = self.serializer().dumps(session_dict) File "/Library/Python/2.7/site-packages/django/contrib/sessions/serializers.py" in dumps 15. return pickle.dumps(obj, pickle.HIGHEST_PROTOCOL) Exception Type: PicklingError at /zh-cn/checkout/preview/ Exception Value: Can't pickle <type 'function'>: attribute lookup __builtin__.function failed Debug info: i debugged and found this problem is threw from handler/base.py. By the way, i didn’t remember i have change any code which cause this problem. try: # Apply response middleware, regardless of the response for middleware_method in self._response_middleware: response = middleware_method(request, response) # Complain if the response middleware returned None (a common error). if response is None: raise ValueError( "%s.process_response didn't return an " "HttpResponse object. It returned None instead." % (middleware_method.__self__.__class__.__name__)) response = self.apply_response_fixes(request, response) except: # Any exception should be gathered and handled signals.got_request_exception.send(sender=self.__class__, request=request) response = self.handle_uncaught_exception(request, resolver, sys .exc_info()) *Part of my code:* - mysite/app/checkout/views.py class MultiPaymentDetailsView(RedirectSessionMixin, OscarPaymentDetailsView ): template_name = 'checkout/payment_details.html' template_name_preview = 'checkout/preview.html' paymentsource_name={ 'WeChatPay':"微信担保", } paymentsource_method={ 'WeChatPay':WechatpayHandle } def get_context_data(self, **kwargs): context=super(OscarPaymentDetailsView,self).get_context_data(** kwargs) context['paymethod']=self.paymentsource_name[self.get_paymethod()] return context def get(self, request, *args, **kwargs): if kwargs.get('paymethod'): self.save_paymethod(kwargs.get('paymethod')) return HttpResponseRedirect('/checkout/preview') return super(OscarPaymentDetailsView,self).get(self,request, *args, **kwargs) def handle_payment(self, order_number, total, **kwargs): """ Make submission to scancode """ self.set_order_number(order_number) self.set_info() paymethod=self.paymentsource_method[self.get_paymethod()] paymethod(self,order_number, **kwargs) - mysite/wcpay/views.py def WechatpayHandle(paymentview,order_number, **kwargs): """ Make submission to Wechat """ wechatpaymon=WechatpaySessionMixin(paymentview.checkout_session) if settings.DEBUG: base_url = 'http://%s' % paymentview.request.META['HTTP_HOST'] else: base_url = 'https://%s' % Site.objects.get_current().domain # 向微信服务器发送统一下单请求｜send place order request to weixin server # notify_url = 'http://8d9ce024.ngrok.io/zh-cn/checkout/wechatpay/respond' notify_url = "%s%s" % (base_url, reverse("checkout:wcpay:wechat-respond" )) print 'notify_url: ',notify_url comm = Common_util_pub() out_trade_no = '{0}{1}{2}'.format('scan','_',int(time.time())) out_trade_no = '{0}{1}'.format(out_trade_no,comm.createNoncestr(32 - len (out_trade_no))) unifiedpay = UnifiedOrder_pub() unifiedpay.setParameter('out_trade_no', out_trade_no) unifiedpay.setParameter('body', '扫一扫支付') unifiedpay.setParameter('total_fee', '1') unifiedpay.setParameter('notify_url', notify_url) unifiedpay.setParameter('trade_type', 'NATIVE') unifiedorder = unifiedpay.getPrepayId() start_pay_url = '/zh-cn/checkout/wechatpay/scancode' code_url = unifiedorder.get('code_url') # start_pay_url = '/checkout/wechatpay/scancode' # rp = requests.post(start_pay_url1, json.dumps(code_url)) # print rp start_pay_url = start_pay_url + '/?code_url=' + code_url # wechatpaymon.set_wechatpay() raise RedirectRequired(start_pay_url) *Reference:* https://github.com/amyhoo/django-oscar-alipay a good project which didn’t implement qrcode scan but quite the same way. Any ideas about this problem or materials about how to develop qrcode payment with django will be grateful ! Thanks! Xiwen -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/523066dc-249a-4d5c-9e44-8872bf1ca130%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
