diff -r 6a3c464f871f -r 04d4494f518d app/soc/views/models/grading_survey_group.py
--- a/app/soc/views/models/grading_survey_group.py	Mon Jul 13 00:59:48 2009 +0200
+++ b/app/soc/views/models/grading_survey_group.py	Mon Jul 13 01:00:20 2009 +0200
@@ -23,6 +23,7 @@
   ]
 
 
+import datetime
 import time
 
 from google.appengine.ext.db import djangoforms
@@ -229,6 +230,8 @@
     For args see base.View.public().
     """
 
+    from google.appengine.api.labs import taskqueue
+
     from soc.logic import lists as lists_logic
     from soc.logic.models.grading_record import logic as record_logic
 
@@ -240,6 +243,32 @@
       return responses.errorResponse(
           error, request, template=params['error_public'])
 
+    # get the POST request dictionary and check if we should take action
+    post_dict = request.POST
+
+    if post_dict.get('update_records'):
+      # start the task to update all GradingRecords for the given group
+      task_params = {
+          'group_key': entity.key().id_or_name()}
+      task_url = '/tasks/grading_survey_group/update_records'
+
+      new_task = taskqueue.Task(params=task_params, url=task_url)
+      new_task.add()
+
+      # update the GradingSurveyGroup with the new timestamp
+      fields = {'last_update_started': datetime.datetime.now()}
+      survey_group_logic.updateEntityProperties(entity, fields)
+
+    if post_dict.get('update_projects'):
+      # start the task to update all StudentProjects for the given group
+      task_params = {
+          'group_key': entity.key().id_or_name()}
+      task_url = '/tasks/grading_survey_group/update_projects'
+
+      new_task = taskqueue.Task(params=task_params, url=task_url)
+      new_task.add()
+
+
     template = params['records_template']
 
     list_params = params.copy()