The Django JSON encoder already extends the simplejson
encoder a little; this extends it more and gives an example of how to go about further extension.
Hopefully newserializers
(see the community aggregator today) will supercede this, but until then, it's useful.
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
|
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Comments
I like =D
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