Parsing json object sent with Ajax GET method in Django

Question

I have created an Ajax request which should be processed by Django:

var tracks = [{'artist':'xxx', 'track':'yyy', 'duration':100},
              {'artist':'xxx', 'track':'yyy', 'duration':100},
              {'artist':'xxx', 'track':'yyy', 'duration':100}];
$.ajax({
  type: 'GET',
  url: ROOT_URL + '/snv/',
  data: {tracks: tracks},
  dataType: 'json'
}).done(function (data) {
  // do something
}).fail(function (data) {
  // do something else
});

and I have a Python function to retrieve that data:

def snv(request):
    for track in request.GET:
        print track

But this function prints something like:

tracks[1][artist]
tracks[0][track]
tracks[0][duration]
tracks[2][artist]
tracks[1][track]
tracks[1][duration]
tracks[2][duration]
tracks[0][artist]
tracks[2][track]

If I print request.GET I get this:

<QueryDict: {u'tracks[1][artist]': [u'Artist 02'], u'tracks[0][track]': [u'title 00'], u'tracks[0][duration]': [u'202'], u'tracks[2][artist]': [u'Artist 04'], u'tracks[1][track]': [u'title 02'], u'tracks[1][duration]': [u'506'], u'tracks[2][duration]': [u'233'], u'tracks[0][artist]': [u'Artist 00'], u'tracks[2][track]': [u'title 04']}>

How to process my object properly?

I'd like to iterate through the array sent with ajax and insert each object from array into database. — errata
– errata, Commented Oct 13, 2013 at 11:30

mariodev · Accepted Answer · 2013-10-13 13:09:56Z

5

You can solve it by using json encoding:

encode in javascript

data: {tracks: JSON.stringify(tracks)}

decode in the view

tracks = json.loads(request.POST.get('tracks'))

This way you avoid 3rd party parser :)

answered Oct 13, 2013 at 13:09

mariodev

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1 Comment

Dat TT Over a year ago

Thanks! This works for me, including PUT method and complex array item

errata · Accepted Answer · 2013-10-13 12:28:27Z

0

Ok, I solved it like this:

changed my Ajax request from GET to POST,
followed this to acquire CSRF_token,
used this parser to parse my object,
and finally changed my Python function:

from django.views.decorators.csrf import csrf_exempt

@csrf_exempt
def startNewVoting(request):
  from querystring_parser import parser
  p = parser.parse(request.POST.urlencode())
  for key, track in p['tracks'].iteritems():
    print track
    # save to db...

answered Oct 13, 2013 at 12:28

errata

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