show message for no match

angular_app/js/app.js

@@ -17,6 +17,7 @@
 /* Register our fantastic app. */
 var eventManApp = angular.module('eventManApp', [
     'ngRoute',
+    'ngAnimate',
     'eventManServices',
     'eventManControllers',
     'ui.bootstrap',

eventman_server.py

@@ -816,10 +816,14 @@ class EventsHandler(CollectionHandler):
             self.send_ws_message('event/%s/tickets/updates' % id_, json.dumps(ret))
             self.set_status(400)
             return ret
-        elif nr_matches == 1:
-            old_ticket_data = matching_tickets[0]
+        elif nr_matches == 0:
+            ret = {'error': True, 'message': 'no ticket matched', 'query': query,
+                   'uuid': uuid, 'username': self.current_user_info.get('username', '')}
+            self.send_ws_message('event/%s/tickets/updates' % id_, json.dumps(ret))
+            self.set_status(400)
+            return ret
         else:
-            old_ticket_data = {}
+            old_ticket_data = matching_tickets[0]
 
         # We have changed the "cancelled" status of a ticket to False; check if we still have a ticket available
         if 'number_of_tickets' in current_event and old_ticket_data.get('cancelled') and not data.get('cancelled'):

static/css/eventman.css

@@ -103,3 +103,8 @@ input[type=text].form-control, input[type=search].form-control {
 #toast-container.toast-bottom-center>div, #toast-container.toast-center>div, #toast-container.toast-top-center>div {
     margin-bottom: 4px;
 }
+
+:not(.no-enter)#toast-container > div.ng-enter
+{
+    transition-duration: .1s;
+}