if filter_str:
             _logs = filter(lambda x: filter_str in x, _logs)
         if time_from:
-            time_from = time.strptime(time_from.split(" ")[0], self.TIME_FORMAT)
+            if type(time_from) is basestring:
+                time_from = time.strptime(time_from.split(" ")[0], self.TIME_FORMAT)
             try:
                 __logs = []
                 for log in _logs:
                 self.error("Time format error")
         if time_to:
             try:
-                time_to = time.strptime(time_to.split(" ")[0], self.TIME_FORMAT)
+                if type(time_to) is basestring:
+                    time_to = time.strptime(time_to.split(" ")[0], self.TIME_FORMAT)
                 __logs = []
                 for log in _logs:
                     _log = time.strptime(log.split(" ")[0], self.TIME_FORMAT)
 
     def __init__(self):
         super(Logs, self).__init__()
 
-    def _get_user_from_token(self, token_id):
+    def _get_user_id_from_token(self, token_id):
         response = self.token_provider_api.validate_token(token_id)
         token_ref = token_model.KeystoneToken(token_id=token_id, token_data=response)
         return token_ref['user']