Start working on the non-trivial types handling

wsme/restjson.py

@@ -1,11 +1,29 @@
+import base64
+
 from wsme.rest import RestProtocol
 from wsme.controller import register_protocol
+import wsme.types
 
 try:
     import simplejson as json
 except ImportError:
     import json
 
+
+def prepare_encode(value, datatype):
+    if datatype in wsme.types.pod_types:
+        return value
+    if datatype in wsme.types.structured_types:
+        d = dict()
+        for name, datatype, mandatory in wsme.types.list_attributes(value):
+            d[name] = prepare_encode(getattr(value, name), datatype)
+        return d
+    if datatype in wsme.types.dt_types:
+        return value.isoformat()
+    if datatype is wsme.types.binary:
+        return base64.encode()
+
+
 class RestJsonProtocol(RestProtocol):
     name = 'REST+Json'
     dataformat = 'json'
@@ -16,7 +34,7 @@ class RestJsonProtocol(RestProtocol):
         return kw
 
     def encode_result(self, result, return_type):
-        return json.dumps({'result': result})
+        return json.dumps({'result': prepare_encode(result, return_type)})
 
     def encode_error(self, errordetail):
         return json.dumps(errordetail)

wsme/types.py

@@ -0,0 +1,15 @@
+import datetime
+import decimal
+
+binary = object()
+
+pod_types = [str, unicode, int, float, bool]
+dt_types = [datetime.date, datetime.time, datetime.datetime]
+extra_types = [binary, decimal.Decimal]
+native_types = pod_types + dt_types + extra_types
+
+structured_types = []
+
+def register_type(class_):
+    structured_types.append(class_)
+