+++ /dev/null
-from django.contrib.auth.decorators import login_required
-from django.utils.decorators import method_decorator
-from django.http import HttpResponseRedirect
-# for 'as_view' that we need to call in urls.py and the like
-from django.views.generic.base import TemplateView
-
-from manifold.manifoldresult import ManifoldException
-
-########## the base class for views that require a login
-class LoginRequiredView (TemplateView):
-
- @method_decorator(login_required)
- def dispatch(self, request, *args, **kwargs):
- return super(LoginRequiredView, self).dispatch(request, *args, **kwargs)
-
-
-########## the base class for views that need to protect against ManifoldException
-# a decorator for view classes to catch manifold exceptions
-# by design views should not directly exercise a manifold query
-# given that these are asynchroneous, you would expect a view to just
-# return a mundane skeleton
-# however of course this is not always true,
-# e.g. we deal with metadata some other way, and so
-# it is often a good idea for a view to monitor these exceptions
-# and to take this opportunity to logout people
-
-def logout_on_manifold_exception (fun_that_returns_httpresponse):
- def wrapped (request, *args, **kwds):
- print 'wrapped by logout_on_manifold_exception'
- try:
- return fun_that_returns_httpresponse(request,*args, **kwds)
- except ManifoldException, manifold_result:
- # xxx we need a means to display this message to user...
- from django.contrib.auth import logout
- logout(request)
- return HttpResponseRedirect ('/')
- except Exception, e:
- # xxx we need to sugarcoat this error message in some error template...
- print "Unexpected exception",e
- import traceback
- traceback.print_exc()
- return HttpResponseRedirect ('/')
- return wrapped
-
-# at first sight this matters only for views that require login
-# so for now we expose a single class that behaves like
-# login_required + logout_on_manifold_exception
-class LoginRequiredAutoLogoutView (TemplateView):
-
- @logout_on_manifold_exception
- @method_decorator(login_required)
- def dispatch (self, request, *args, **kwds):
- return super(LoginRequiredAutoLogoutView,self).dispatch(request,*args,**kwds)