Django saving json value to database/model

Question

Im new to django and im trying to save json to database. The problem is that im able to get data the data in my views but not sure how to save it in database. Im trying to save the comments

models.py

class Post(models.Model):
    title=models.CharField(max_length=200)
    description=models.TextField(max_length=10000)
    pub_date=models.DateTimeField(auto_now_add=True)
    slug = models.SlugField(max_length=40, unique=True)

    def __unicode__(self):
        return self.title


class Comment(models.Model):
    title=models.ForeignKey(Post)
    comments=models.CharField(max_length=200)

    def __unicode__(self):
        return '%s' % (self.title)

serializer.py

class CommentSerializer(serializers.ModelSerializer):
    id = serializers.CharField(source="title.id", read_only=True)
    title = serializers.CharField(source="title.title", read_only=True)

class Meta:
    model = Comment
    fields = ('id','title','comments')


class PostSerializer(serializers.ModelSerializer):

    class Meta:
        model = Post
        fields = ('id','title','description','pub_date')

Please help me saving the data from views to database

view.py

def add_comments(request):
    if 'application/x-www-form-urlencoded' in request.META['CONTENT_TYPE']:
        print 'hi'
        data = json.loads(request.body)
        comment = data.get('comment', None)
        id = data.get('id', None)
        title = data.get('title', None) 
        ....................# not sure how to save to database
       pass

Thanks in advance........Please let me know if there is any better way to do it...

Answer 1

If I understand your question clearly then Your view should be something like.

def add_comments(request):
    if 'application/x-www-form-urlencoded' in request.META['CONTENT_TYPE']:
        print 'hi'
        data = json.loads(request.body)
        comment = data.get('comment', None)
        id = data.get('id', None)
        title = data.get('title', None) 

        post = Post.objects.get(id = id)
        com = Comment()
        com. comments = comment
        com.title = post
        com.save()

Answer 2

Assuming a model of:

class User(models.Model):
  name = models.CharField()
  phone_number = models.CharField()

Sending json of {"name":"Test User", "phone_number":"123-456-7890"}

In the view you could do the following to save it to the database.

def SaveUser(request):
  body_unicode = request.body.decode('utf-8')
  body = json.loads(body_unicode)
  u = User(**body)
  u.save()
  return JsonResponse({"result": "OK"})

Answer 3

If you're using Postgres, you can store json with JSONField (read more), but if not, you need parse json to string and save with CharField using json.dumps(data). To recovery data, use json string to dict with json.loads(json_string)

Remember to import json lib: import json

Answer 4

If you want to store the intact JSON, try using the django-jsonfield project: https://github.com/dmkoch/django-jsonfield