My guess is that your error happen when accessing the page before
submitting the firm. So you don't have any POST data and trying to access
any key rise an error.
You can use request.POST.get("key", "default_value") or you can write an if
and testing that request.method is "POST".
If I'm wrong, I suggest you share your template with your form.
A few tips for your future with django, not really related to your problem.
First, django provide a Form API which can handle form creation and
validation.
The doc is here
https://docs.djangoproject.com/en/1.11/ref/forms/api/
And django already provide a few of these for authentication, the doc for
the login form is here:
https://docs.djangoproject.com/en/1.8/topics/auth/default/#django.contrib.auth.forms.AuthenticationForm
If you have trouble to understand​ how to use the form API, I recommend the
django girls tutorial on the subject. That helped me a lot.
A next step would be to look at class based view and check if there is one
for login. I've heard about that but never looked. If that true, you might
be able to get your view, as simply as declaring a class inheriting from
the django login view and putting a template attribute in your class
pointing to your template file
Anyway, good luck with your issue
On 5 May 2017 1:03 am, "sum abiut" <suab...@gmail.com> wrote:
Hi,
i have try to login user using the guide from
https://docs.djangoproject.com/en/1.11/topics/auth/default/
but get an error. Can someone advise what i am doin wrong here
he is my view.py
#Authentication user
def login(request):
username=request.POST['username']
password=request.POST['password']
user=authenticate(request,username=username,password=password)
if user is not None:
login(request,user)
#Redirect to dashboard page
return render(request,'dashboard.html')
else:
# return invalid login message
return HttpResponse( 'You have enter a wrong password or username
please again')
Error message:
Environment:
Request Method: POST
Request URL: http://127.0.0.1:8000/login/
Django Version: 1.11
Python Version: 2.7.12
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'fundmanager']
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.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback:
File "/root/.virtualenvs/benchmark/local/lib/python2.7/site-packa
ges/django/core/handlers/exception.py" in inner
41. response = get_response(request)
File "/root/.virtualenvs/benchmark/local/lib/python2.7/site-packa
ges/django/core/handlers/base.py" in _get_response
187. response = self.process_exception_by_middleware(e,
request)
File "/root/.virtualenvs/benchmark/local/lib/python2.7/site-packa
ges/django/core/handlers/base.py" in _get_response
185. response = wrapped_callback(request, *callback_args,
**callback_kwargs)
File "/var/www/projects/benchmark/fundmanager/views.py" in login
22. username=request.POST['username']
File "/root/.virtualenvs/benchmark/local/lib/python2.7/site-packa
ges/django/utils/datastructures.py" in __getitem__
85. raise MultiValueDictKeyError(repr(key))
Exception Type: MultiValueDictKeyError at /login/
Exception Value: "u'username'"
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