helpers: flash messages can now carry additional information in json format

rhodecode/lib/helpers.py

@@ -683,11 +683,20 b' class Flash(_Flash):'
         messages = flash.pop_messages()
         if messages:
           for message in messages:
+                subdata = {}
+                if hasattr(message.message, 'rsplit'):
+                    flash_data = message.message.rsplit('|DELIM|', 1)
+                    org_message = flash_data[0]
+                    if len(flash_data) > 1:
+                        subdata = json.loads(flash_data[1])
+                else:
+                    org_message = message.message
             payloads.append({
                 'message': {
-                    'message': u'{}'.format(message.message),
+                        'message': u'{}'.format(org_message),
                     'level':   message.category,
-                    'force': 'true'
+                        'force': True,
+                        'subdata': subdata
                 }
             })
         return json.dumps(payloads)