Question

升级到Django 1.10后，我收到错误render_to_response() got an unexpected keyword argument 'context_instance'。

我的观点如下：

from django.shortcuts import render_to_response
from django.template import RequestContext

def my_view(request):
    context = {'foo': 'bar'}
    return render_to_response('my_template.html', context, context_instance=RequestContext(request))

以下是完整的追溯：

Traceback:

File "/Users/alasdair/.virtualenvs/django110/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner
  39.             response = get_response(request)

File "/Users/alasdair/.virtualenvs/django110/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
  187.                 response = self.process_exception_by_middleware(e, request)

File "/Users/alasdair/.virtualenvs/django110/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
  185.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/Users/alasdair/dev/rtr/rtr/urls.py" in my_view
  26.     return render_to_response('my_template.html', context,  context_instance=RequestContext(request))

 Exception Type: TypeError at /
Exception Value: render_to_response() got an unexpected keyword argument 'context_instance'

Answer 1

context_instance中的render_to_response参数为deprecated in Django 1.8，并在Django 1.10中删除。

解决方案是切换到render快捷方式，该快捷方式会自动使用RequestContext。

更新您的导入并按如下方式查看。请注意，render将request对象作为其第一个参数。

from django.shortcuts import render

def my_view(request):
    context = {'foo': 'bar'}
    return render(request, 'my_template.html', context)

Django 1.3中引入了render快捷方式，因此此更改与旧版本的Django兼容。

Answer 2

Django 2.0.7 python 3.5

在project / urls.py

中

handler404 = 'project.views.not_found'
handler500 = 'project.views.server_error'

在project / views.py

中

def not_found(request, exception=None):
response = render(request, '404.html', {})
response.status_code = 404
return response

def server_error(request, exception=None):
response = render(request, '500.html', {})
response.status_code = 500
return response

exception = None不通过，因为否则会抛出 TypeError：server_error（）缺少1个必需的位置参数：'exception'

Answer 3

Django 1.8中的

兼容：

from django.shortcuts import render_to_response
from django.template import RequestContext

def my_view(request):
    context = {'foo': 'bar'}
    return render_to_response('my_template.html', {'context':context}, context_instance=RequestContext(request))

在Django 1.11中

from django.shortcuts import render
from django.template import RequestContext

def my_view(request):
    context = {'foo': 'bar'}
    return render(request, 'my_template.html', context)

Django错误：render_to_response（）得到了一个意外的关键字参数'context_instance'

3 个答案: