Django checking for a query string

Question

When someone clicks on my site's logout link, I want them to be redirected to the login page but I want a message to pop up saying that they were successfully logged out. However, I don't want this behaviour to occur when someone normally visits the login page.

I decided to pass in a query string so now when someone hits logout they are redirected to users/login/?logout. How can I check for this in my template though? I want to do something like:

{% if ______ %}
*Message box appears*
{% endif %}

Thanks!

Try if logout in request.GET, it it does not work try to add a value to the logout parameter (?logout=1) and then if request.GET.logout in the template. The request object should be available if the view uses a RequestContext (default if you are calling render or inheriting from a class based view) — Paulo Scardine
– Paulo Scardine, Commented May 24, 2017 at 20:27
Django has this functionality built in. It's called "messenges" — Håken Lid
– Håken Lid, Commented May 24, 2017 at 21:05

Paul Andrei · Accepted Answer · 2017-05-24 20:37:34Z

1

Well, you can simply use the built-in Django messaging feature!

Here's a simple example:

# views.py

from django.contrib import messages

def register(request):
  # Logic
  # ...

  messages.success(request, 'Registered successfully!')

  # ...
  # More logic

-

# example.html
{% if messages %}
  <ul class="messages">
    {% for message in messages %}
      <li class="{{ message.tags }}">
        {{ message|safe }}
          <a href="" class="close">X</a>
      </li>
    {% endfor %}
  </ul>
{% endif %}

There's a more in-depth documentation available on Django's official docs website: https://docs.djangoproject.com/en/1.11/ref/contrib/messages/

answered May 24, 2017 at 20:37

Paul Andrei

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Comments

Matt Cremeens · Accepted Answer · 2017-05-24 20:42:21Z

0

Referring to this document, I believe what you are looking for is this

{% if not request.user.is_authenticated %}
    <p>You are logged out!</p>
{% endif %}

edited May 24, 2017 at 20:42

answered May 24, 2017 at 20:36

Matt Cremeens

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