How do I pass template context information when using HttpResponseRedirect in Django?

Question

I have a form that redirects to the same page after a user enters information (so that they can continue entering information). If the form submission is successful, I\'m r

Answer 1

if you are using auth and have a logged in user you could:

http://docs.djangoproject.com/en/dev/topics/auth/#django.contrib.auth.models.User.message_set.create

GET params are also hackable. The querystring, as mentioned in other answers, could be used.

I think the most preferred way would be to use the sessions framework. That way you can load up whatever you want in the context and get

{{ request.session.foo }} 

foo could be the message or you could do:

{% ifequal request.session.foo 1 %} Nice work! {% else %} Almost! {% endifequal %}

and other fun stuff.

http://docs.djangoproject.com/en/dev/topics/http/sessions/#using-sessions-in-views

Answer 2

You add ?saved=1 to the query string and check for it with something like:

saved = request.GET.get('saved', False)

Answer 3

For the sake of completion and future reference, you can now use the messages framework. After you install it:

views.py

from django.contrib import messages

def view(request):
  # your code
  messages.success(request, "Your data has been saved!")
  HttpResponseRedirect(request.path)

template.html

{% if messages %}
<ul class="messages">
  {% for message in messages %}
  <li{% if message.tags %} class="{{ message.tags }}"{% endif %}>{{ message }}</li>
  {% endfor %}
</ul>
{% endif %}

Answer 4

You can't. HttpResponseRedirect sends a client-side redirect (HTTP status code 302) to the browser, and then the browser re-requests another page.

You can set a URL query string on the redirect, though that will be visible to the user and anyone intercepting HTTP requests (i.e. proxies), and is therefore not suitable for sensitive information.

Answer 5

The best way would probably be to use a coded querystring on the redirect URL... its an old school approach.

You could do something like

/page/?m=1, /page/?m=2, etc

You would then parse that variable with request.GET in the view code and show the appropriate message.

Answer 6

The only way I know of to pass any data with a redirect is to add GET parameters to the URL you're passing in. To avoid XSS hacks you'd want to pass a specific constant like:

[current path you're passing in]?message=saved

And then process the message=saved parameter in the handler for the path you passed in.

A somewhat more complicated way would be not passing the data in the redirect, and instead using something like http://code.google.com/p/django-notify/ to store session-based data that is displayed to the user following the redirect.