removed the field feedback_submitted_by from event model and added the code to create feedlog record when a new feedback is taken.
from django.conf.urls.defaults import *
from workshop.feedback import views as feed_views
urlpatterns = patterns('',
('^submit/(\w+)$', feed_views.submit_feedback),
('^list/(\w+)$', feed_views.list_feedbacks),
('^report/(\w+)$', feed_views.view_report),
)