Extended JSON encoder

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
from django.core.serializers.json import DjangoJSONEncoder
from django.db.models.query import QuerySet

def maybe_call(x):
    if callable(x): return x()
    return x


class JSONEncoder(DjangoJSONEncoder):
    '''An extended JSON encoder to handle some additional cases.

    The Django encoder already deals with date/datetime objects.
    Additionally, this encoder uses an 'as_dict' or 'as_list' attribute or
    method of an object, if provided. It also makes lists from QuerySets.
    '''
    def default(self, obj):
        if hasattr(obj, 'as_dict'):
            return maybe_call(obj.as_dict)
        elif hasattr(obj, 'as_list'):
            return maybe_call(obj.as_list)
        elif isinstance(obj, QuerySet):
            return list(obj)
        return super(JSONEncoder, self).default(obj)
json_encode = JSONEncoder().encode

More like this

  1. Updated: GeoJSON Serializer for GeoDjango (gis) by danielsokolowski 2 years, 5 months ago
  2. GeoJSON Serializer for GeoDjango (gis) by danielsokolowski 2 years, 11 months ago
  3. JSON encoding middleware by kcarnold 5 years, 10 months ago
  4. An alternative model serializer for django models by isaact 5 years, 5 months ago
  5. JSON encode ISO UTC datetime by japerk 5 years ago

Comments

adonm (on July 15, 2010):

I like =D

#

(Forgotten your password?)