Creating json array in django

Question

I am trying to make a json array in django but I am getting error -

In order to allow non-dict objects to be serialized set the safe parameter to False

and my views.py -

def wall_copy(request):
    if True:
        posts = user_post.objects.order_by('id')[:20].reverse()
        return JsonResponse(posts)

Basically user_post is a model a posts is the object of top 20 saved data. I want to send a json array but I am unable to convert posts into a json array. I also tried serializers but it didnt helped.

I am stuck help me please.

Thanks in advance.

ger.s.brett · Accepted Answer · 2015-02-27 09:02:04Z

48

Would this solve your problem?

from django.core import serializers
def wall_copy(request):
    posts = user_post.objects.all().order_by('id')[:20].reverse()
    posts_serialized = serializers.serialize('json', posts)
    return JsonResponse(posts_serialized, safe=False)

edited Feb 27, 2015 at 9:02

answered Feb 26, 2015 at 11:17

ger.s.brett

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2 Comments

aquaman Over a year ago

Thanks it worked but now I am unable to get the data. Can you please tell me how can I retrieve the json data...??

ger.s.brett Over a year ago

Sorry there was a mistake n the posts=... line. The call to the all() function was missing. Does it work for you now?

Greg Dubicki · Accepted Answer · 2018-03-16 04:17:55Z

8

You can solve this by using safe=False:

    def wall_copy(request):
        posts = user_post.objects.all().order_by('id')[:20].reverse()

        return JsonResponse(posts, safe=False)

Note that it's not really unsafe - you just have to make sure on your own, that what you are trying to return can be converted to JSON.

See JsonResponse docs for reference.

edited Mar 16, 2018 at 4:17

Greg Dubicki

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answered Aug 15, 2017 at 13:55

pbhstack

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Comments

Sergii Kozlov · Accepted Answer · 2015-02-26 11:11:33Z

0

Try to use values method: http://django.readthedocs.org/en/1.7.x/ref/models/querysets.html#django.db.models.query.QuerySet.values. It will produce dict-like representation for objects fields you need.

answered Feb 26, 2015 at 11:11

Sergii Kozlov

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1 Comment

aquaman Over a year ago

Hey I tried it but it did not worked for me. Anyways thanks for the advice, that was something new.

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