MultiValueDictKeyError after trying to log in

Question

I'm getting a MultiValueDictKey error.

This is my view:

from django.shortcuts import render
from django.contrib.auth import authenticate, login
from django.http import HttpResponse, HttpResponseRedirect
from bookonshelf import settings

def Login(request):
    next = request.GET.get('next', '/home/')
    if request.method == "POST":
        username = request.POST['username']
        password = request.POST['password']     
        user = authenticate(username=username, password=password)

    if user is not None:
            if user.is_active:
                login(request, user)
                return HttpResponseRedirect(next)
            else:
                return HttpResponse("Inactive user.")
        else:
            return HttpResponseRedirect(settings.LOGIN_URL)

    return render(request, "index/login.html", {'redirect_to': next})

And my login.html:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head     content must come *after* these tags -->
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="../../favicon.ico">

<title>Admin panel</title>

<!-- Bootstrap core CSS -->
<link href="/static/css/bootstrap.min.css" rel="stylesheet">

<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
<link href="/static/css/ie10-viewport-bug-workaround.css" rel="stylesheet">

<!-- Custom styles for this template -->
<link href="/static/css/signin.css" rel="stylesheet">

<!-- Just for debugging purposes. Don't actually copy these 2 lines! -->
<!--[if lt IE 9]><script src="../../assets/js/ie8-responsive-file-   warning.js"></script><![endif]-->
<script src="/static/assets/js/ie-emulation-modes-warning.js"></script>

<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media  queries -->
<!--[if lt IE 9]>
  <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"> </script>
  <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>

<body>

<div class="container">

  <form class="form-signin" method="post" action=".?next={{ redirect_to }}"> {% csrf_token %}
    <h2 class="form-signin-heading">Admin panel</h2>
    <label for="username" class="sr-only">Username</label>
    <input type="text" id="username" class="form-control" placeholder="Username" required autofocus>
    <label for="password" class="sr-only">Password</label>
    <input type="password" id="password" class="form-control" placeholder="Password" required>
    <div class="checkbox">
      <label>
        <input type="checkbox" value="remember-me"> Remember me
      </label>
    </div>
    <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
  </form>

</div> <!-- /container -->


<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
<script src="/static/js/ie10-viewport-bug-workaround.js"></script>
</body>
</html>

I already tried changing request.POST to request.POST.get after reading some similar problems online, but that's not working for me.

def Login(request):
    next = request.GET.get('next', '/home/')
    if request.method == "POST":
        username = request.POST.get('username', False)
        password = request.POST.get('password', False)
        user = authenticate(username=username, password=password)

How do I solve this?

And the code you used when you changed to .get. Also, explain why you're not using Django forms which are specifically meant to deal with this kind of scenario. — Daniel Roseman, Sep 07 '16 at 09:19
Possible duplicate of [django MultiValueDictKeyError error, how do i deal with it](http://stackoverflow.com/questions/5895588/django-multivaluedictkeyerror-error-how-do-i-deal-with-it) — Sayse, Sep 07 '16 at 09:23
@sayse Like I said, the answer given in that question (.get) does not work for me. — Jen Jensen, Sep 07 '16 at 09:26
Then you should post the full error message, as well as Daniel Roseman's suggestion, include the code you tried. — Sayse, Sep 07 '16 at 09:27

score 1 · Answer 1 · answered Sep 07 '16 at 09:30

1

You never give your inputs a name so they are never added to the post data

<input type="text" id="username" name="username">
<input type="password" id="password" name="password">

_{_{I removed some attributes for brevity}}

Also note:

You should import settings from django.conf (from django.conf import settings), this isn't a module, its a class that does magic to always get the right DJANGO_SETTINGS_MODULE.
You should just use a django form which can stop these kind of errors from ever occuring
You should give better defaults than False, these values are strings and False doesn't make sense here.

answered Sep 07 '16 at 09:30

Sayse

42,633
14
77
146

Thanks for the comment, I added names to both username and password. It doesn't give me a MultiValueDictKeyError anymore, but it just keeps me on the page now.. – Jen Jensen Sep 07 '16 at 09:34
@JenJensen - If you have another question you should consider raising it as a new question with what you have tried/researched. If any of these answers solved this problem, you should consider accepting it – Sayse Sep 07 '16 at 09:35

score 1 · Answer 2 · answered Sep 07 '16 at 09:30

1

Put name= for both fields. Ex

<input type="text" name="username" id="username" class="form-control" placeholder="Username" required autofocus>

answered Sep 07 '16 at 09:30

itzMEonTV

19,851
4
39
49

Thanks for the comment, I added names to both username and password. It doesn't give me a MultiValueDictKeyError anymore, but it just keeps me on the page now.. – Jen Jensen Sep 07 '16 at 09:34

MultiValueDictKeyError after trying to log in

2 Answers2