--- a/utils.py Mon Apr 19 13:51:16 2010 +0200
+++ b/utils.py Mon Apr 19 13:52:55 2010 +0200
@@ -318,6 +318,21 @@
class CubicWebJsonEncoder(JSONEncoder):
"""define a simplejson encoder to be able to encode yams std types"""
+
+ # _iterencode is the only entry point I've found to use a custom encode
+ # hook early enough: .default() is called if nothing else matched before,
+ # .iterencode() is called once on the main structure to encode and then
+ # never gets called again.
+ # For the record, our main use case is in FormValidateController with:
+ # dumps((status, args, entity), cls=CubicWebJsonEncoder)
+ # where we want all the entity attributes, including eid, to be part
+ # of the json object dumped.
+ # This would have once more been easier if Entity didn't extend dict.
+ def _iterencode(self, obj, markers=None):
+ if hasattr(obj, '__json_encode__'):
+ obj = obj.__json_encode__()
+ return JSONEncoder._iterencode(self, obj, markers)
+
def default(self, obj):
if isinstance(obj, datetime.datetime):
return obj.strftime('%Y/%m/%d %H:%M:%S')