request.POST get multiple values

Posted: February 24th, 2010 | Author: Davo | Filed under: Django | Tags: getlist, querydict, request.post | 7 Comments »

The QueryDict.getlist() allows to get all the checkbox(or select list) values from the request.POST/GET object.

Let’s assume we have a simple form with the following checkboxes. Each checkbox contains an ID of an artist.


   ... 



   ...

In views.py :

def handle(request):
    if request.method == 'POST':
         artists = request.POST.getlist('artists') # now artists is a list of [1,2,3]

1 Panchicore said at 1:21 am on March 2nd, 2010:
@Davo
Thats was totally #$%& usefull for me Thanks.
2 SpiegS said at 9:06 pm on March 10th, 2010:
I have a question – what would be the best way in the case of GET (form with action GET) to convert the list back to a proper URL? urlencode doesn’t work – it converts the list to string ‘[1,2,3]‘ which in turn is’nt recognized properly by getlist anymore.
3 Davo said at 10:14 pm on March 10th, 2010:
Hello SpiegS,

What you can do is the following:

>>> from django.http import QueryDict
>>> q = QueryDict(‘artists=1′).copy()
>>> my_artists = [11,22,33,44]
>>> q.setlist(‘artists’, my_artists)
>>> print q
<QueryDict: {u’artists’: [11, 22, 33, 44]}>
>>> print q.urlencode()
artists=11&artists=22&artists=33&artists=44

Hope this helps.
4 SpiegS said at 4:20 pm on March 11th, 2010:
Thx. Didn’t knew this.
5 Larry said at 2:28 am on December 4th, 2010:
you learn something everyday..
thanks a lot
6 Janne said at 11:04 am on August 4th, 2011:
Thank you! Just what i was looking for.
7 akshar said at 12:37 pm on October 3rd, 2011:
thanks a lot, i was looking for it. saved me some time.