1 files changed, 68 insertions, 0 deletions
diff --git a/webapp/django/core/serializers/json.py b/webapp/django/core/serializers/json.py
new file mode 100644
index 0000000000..97e5bc9b26
--- /dev/null
+++ b/webapp/django/core/serializers/json.py
@@ -0,0 +1,68 @@
+"""
+Serialize data to/from JSON
+"""
+
+import datetime
+from StringIO import StringIO
+
+from django.core.serializers.python import Serializer as PythonSerializer
+from django.core.serializers.python import Deserializer as PythonDeserializer
+from django.utils import datetime_safe
+from django.utils import simplejson
+
+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):
+            d = datetime_safe.new_datetime(o)
+            return d.strftime("%s %s" % (self.DATE_FORMAT, self.TIME_FORMAT))
+        elif isinstance(o, datetime.date):
+            d = datetime_safe.new_date(o)
+            return d.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
+