Hey Ajit,
This error comes when You are trying to get username, passwords from the
form.
It is due to the below reason -
In Login,
You are using -> request.POST['username'] which will raise a KeyError
exception if 'username' is not in request.POST.
Instead use -> request.POST.get('username') which will return None if '
username' is not in request.POST.
Additionally, .get allows you to provide an additional parameter of a
default value which is returned if the key is not in the dictionary.
For example, request.POST.get('username', 'mydefaultvalue')
Hope this helps. If any concern then let us know.
On Mon, 5 Aug 2019 at 15:47, Ajeet Kumar Gupt <ajeetgupt1...@gmail.com>
wrote:
> Dear Team,
>
> I am developing custom registration and login page for end-user but
> getting the below error. Please find the views.py code also in the trail.
>
>
> *MultiValueDictKeyError at /login/*
>
> 'username'
>
> Request Method: GET
> Request URL: http://127.0.0.1:8000/login/
> Django Version: 2.2.3
> Exception Type: MultiValueDictKeyError
> Exception Value:
>
> 'username'
>
> Exception Location:
> C:\Python\Python37\lib\site-packages\django\utils\datastructures.py
> in __getitem__, line 80
> Python Executable: C:\Python\Python37\python.exe
> Python Version: 3.7.3
>
> --
> *Views.py*
> *____________________________*
>
> rom django.shortcuts import render
> from django.contrib.auth.models import User
> from django.http import HttpResponseRedirect
> from .forms import RegisterForm
> from django.conf import settings
> from django.shortcuts import redirect
> from django.contrib.auth.decorators import login_required
> from django.contrib import messages
> from django.contrib.auth import authenticate,login
> from django.contrib import auth
> from django.core.exceptions import ObjectDoesNotExist
>
>
> def user_register(request):
> # if this is a POST request we need to process the form data
> template = 'mymodule/register.html'
> # template = 'index.html'
> if request.method == 'POST':
> # create a form instance and populate it with data from the request:
> form = RegisterForm(request.POST)
> # check whether it's valid:
> if form.is_valid():
> if
> User.objects.filter(username=form.cleaned_data['username']).exists():
> return render(request, template, {
> 'form': form,
> 'error_message': 'Username already exists.'
> })
> elif
> User.objects.filter(email=form.cleaned_data['email']).exists():
> return render(request, template, {
> 'form': form,
> 'error_message': 'Email already exists.'
> })
> elif form.cleaned_data['password'] !=
> form.cleaned_data['password_repeat']:
> return render(request, template, {
> 'form': form,
> 'error_message': 'Passwords do not match.'
> })
> else:
> # Create the user:
> user = User.objects.create_user(
> form.cleaned_data['username'],
> form.cleaned_data['email'],
> form.cleaned_data['password']
> )
> user.first_name = form.cleaned_data['first_name']
> user.last_name = form.cleaned_data['last_name']
> user.phone_number = form.cleaned_data['phone_number']
> user.save()
> return redirect('index.html')
> # Login the user
> #login(request, user)
> #def user_login(request):
> # redirect to accounts page:
> #return render(request, '/login.html')
> # return HttpResponseRedirect(return, '/login.html')
> # No post data availabe, let's just show the page.
> else:
> form = RegisterForm()
> return render(request, template, {'form': form})
>
>
>
>
>
> def login_view(request):
> username = request.POST['username']
> password = request.POST['pass']
> users = authenticate(request, username=username, password=password)
> if users is not None:
> login(request, users)
> return redirect('welcome.html')
> else:
> return redirect('index.html')
>
>
>
> def logout(request):
> auth.logout(request)
> return render(request, 'login.html')
>
>
>
>
> *Thanks & Regards*
> Ajeet Kumar Gupt
> +91-9311232332
>
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