Django 和 python 类型错误

Question

我可以访问网站的管理区域，但我无法访问主页和其他前端页面..弹出以下错误...

> TypeError at / render_to_response() got an unexpected keyword argument
> 'context_instance' Request Method:    GET Request
> URL:  http://127.0.0.1:8000/ Django Version:  1.10.6 Exception
> Type: TypeError Exception Value:   render_to_response() got an
> unexpected keyword argument 'context_instance' Exception
> Location: C:\Users\DEEP\Desktop\Bus_reservation\src\bus\views.py in
> index, line 10 Python Executable: C:\Python34\python.exe Python
> Version:  3.4.4 Python Path:  
> ['C:\\Users\\DEEP\\Desktop\\Bus_reservation\\src', 
> 'C:\\WINDOWS\\SYSTEM32\\python34.zip',  'C:\\Python34\\DLLs', 
> 'C:\\Python34\\lib',  'C:\\Python34', 
> 'C:\\Python34\\lib\\site-packages']

这里是回溯

> Environment:
> 
> 
> Request Method: GET Request URL: http://127.0.0.1:8000/
> 
> Django Version: 1.10.6 Python Version: 3.4.4 Installed Applications:
> ['bus.apps.BusConfig',  'bookTicket.apps.BookticketConfig', 
> 'account.apps.AccountConfig',  'django.contrib.admin', 
> 'django.contrib.auth',  'django.contrib.contenttypes', 
> 'django.contrib.sessions',  'django.contrib.messages', 
> 'django.contrib.staticfiles'] Installed Middleware:
> ['django.middleware.security.SecurityMiddleware', 
> 'django.contrib.sessions.middleware.SessionMiddleware', 
> 'django.middleware.common.CommonMiddleware', 
> 'django.middleware.csrf.CsrfViewMiddleware', 
> 'django.contrib.auth.middleware.AuthenticationMiddleware', 
> 'django.contrib.auth.middleware.SessionAuthenticationMiddleware', 
> 'django.contrib.messages.middleware.MessageMiddleware', 
> 'django.middleware.clickjacking.XFrameOptionsMiddleware']
> 
> 
> 
> Traceback:
> 
> File "C:\Python34\lib\site-packages\django\core\handlers\exception.py"
> in inner
>   42.             response = get_response(request)
> 
> File "C:\Python34\lib\site-packages\django\core\handlers\base.py" in
> _legacy_get_response
>   249.             response = self._get_response(request)
> 
> File "C:\Python34\lib\site-packages\django\core\handlers\base.py" in
> _get_response
>   187.                 response = self.process_exception_by_middleware(e, request)
> 
> File "C:\Python34\lib\site-packages\django\core\handlers\base.py" in
> _get_response
>   185.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)
> 
> File "C:\Users\DEEP\Desktop\Bus_reservation\src\bus\views.py" in index
>   10.     return render_to_response(template_name,locals(),context_instance=RequestContext(request))
> 
> Exception Type: TypeError at / Exception Value: render_to_response()
> got an unexpected keyword argument 'context_instance'

这是我的文件views.py--BUS

> from django.shortcuts import render_to_response from django.http
> import HttpResponse from django.template import RequestContext from
> .models import BusInfo,BusDropArea,BusPickArea
> 
> import json
> 
> def index (request, template_name ='bus_resrv_system.html'):
>     page_title = 'Bus'
>     return render_to_response(template_name,locals(),context_instance=RequestContext(request))
> 
> def search_bus(request,template_name ='bus/search_bus.html'):
>     page_title = 'Book a ticket'
>     
>     if request.method == 'POST':
>         post_data = request.POST.copy()
>         area_from_id = post_data.get('area_from_id')
>         area_to_id = post_data.get('area_to_id') 
>         bus_info_list= BusInfo.objects.filter(arriving_from_id=area_from_id,depature_at_id=area_to_id)
>     return render_to_response(template_name, locals(), context_instance=RequestContext(request))
> 
> 
> def autocomplete_pick(request):
>     if request.is_ajax():
>         q = request.GET.get('term', '')
>         drugs = BusPickArea.objects.filter(area_name__icontains = q )[:20]
>         results = []
>         for drug in drugs:
>             drug_json = {}
>             drug_json['id'] = drug.id
>             drug_json['label'] = drug.area_name
>             drug_json['value'] = drug.area_name
>             results.append(drug_json)
>         data = json.dumps(results) 
>     else:
>         data = 'fail'
>     mimetype = 'application/json'
>     return HttpResponse(data, mimetype)
> 
> def autocomplete_drop(request):
>     if request.is_ajax():
>         q = request.GET.get('term', '')
>         drugs = BusDropArea.objects.filter(area_name__icontains = q )[:20]
>         results = []
>         for drug in drugs:
>             drug_json = {}
>             drug_json['id'] = drug.id
>             drug_json['label'] = drug.area_name
>             drug_json['value'] = drug.area_name
>             results.append(drug_json)
>         data = json.dumps(results) 
>     else:
>         data = 'fail'
>     mimetype = 'application/json'
>     return HttpResponse(data, mimetype)

除了解决错误之外，我还将render_to_response方法更改为render..根据旧的Django库问题..但随后会弹出NameError for undefined render!!

Answer 1

请参阅docs，了解如何致电render_to_response。对于较新版本的 django，签名是：

render_to_response(template_name, context=None, content_type=None, status=None, using=None)

您传递的context_instance=RequestContext(request) 不是有效参数...您使用的是什么版本的 django？