--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/app/django/core/serializers/json.py Fri Jul 18 18:22:23 2008 +0000
@@ -0,0 +1,66 @@
+"""
+Serialize data to/from JSON
+"""
+
+import datetime
+from django.utils import simplejson
+from django.core.serializers.python import Serializer as PythonSerializer
+from django.core.serializers.python import Deserializer as PythonDeserializer
+try:
+ from cStringIO import StringIO
+except ImportError:
+ from StringIO import StringIO
+try:
+ import decimal
+except ImportError:
+ from django.utils import _decimal as decimal # Python 2.3 fallback
+
+class Serializer(PythonSerializer):
+ """
+ Convert a queryset to JSON.
+ """
+ internal_use_only = False
+
+ def end_serialization(self):
+ self.options.pop('stream', None)
+ self.options.pop('fields', None)
+ simplejson.dump(self.objects, self.stream, cls=DjangoJSONEncoder, **self.options)
+
+ def getvalue(self):
+ if callable(getattr(self.stream, 'getvalue', None)):
+ return self.stream.getvalue()
+
+def Deserializer(stream_or_string, **options):
+ """
+ Deserialize a stream or string of JSON data.
+ """
+ if isinstance(stream_or_string, basestring):
+ stream = StringIO(stream_or_string)
+ else:
+ stream = stream_or_string
+ for obj in PythonDeserializer(simplejson.load(stream)):
+ yield obj
+
+class DjangoJSONEncoder(simplejson.JSONEncoder):
+ """
+ JSONEncoder subclass that knows how to encode date/time and decimal types.
+ """
+
+ DATE_FORMAT = "%Y-%m-%d"
+ TIME_FORMAT = "%H:%M:%S"
+
+ def default(self, o):
+ if isinstance(o, datetime.datetime):
+ return o.strftime("%s %s" % (self.DATE_FORMAT, self.TIME_FORMAT))
+ elif isinstance(o, datetime.date):
+ return o.strftime(self.DATE_FORMAT)
+ elif isinstance(o, datetime.time):
+ return o.strftime(self.TIME_FORMAT)
+ elif isinstance(o, decimal.Decimal):
+ return str(o)
+ else:
+ return super(DjangoJSONEncoder, self).default(o)
+
+# Older, deprecated class name (for backwards compatibility purposes).
+DateTimeAwareJSONEncoder = DjangoJSONEncoder
+