I've opened a new thread, which relates to a previous
one<https://groups.google.com/forum/#!topic/django-users/Ng0jocuFdqw>from me.
Digging into a wired behaviour in a FormView I've arrived to the following
problem:
- In my "form_valid" method I need to manage exceptions situations.
- In case of an exception I want to pass the response flow to an external
method, in an other module
- This external method returns a "render_to_response", in which I also
pass a RequestContext instance built from the "FormView.request" object.
Sometihng like this (I past a simplified version)
class ProjectCreateView(FormView):
def form_valid(self, form):
try:
<something>
except IntegrityError as e:
return render_error(_('A project with the same title already
exists'),self.request)
def render_error(msg,request):
#__dummy__ = request.user.is_authenticated()
data = {'error':{'msg':msg}}
return
render_to_response('generic_error.html',data,context_instance=RequestContext(request))
This causes a DatabaseError, because it crashes when it reaches the
user.is_authenticated template variable. The crashed seems to be caused
because of the SimpleLazyObject around the User instance. It seems it's not
correctly setup, or whatelse... I don't know.
This problem disappears if I use the __dummy__ variable in the previous
snippet.
This call seems to make the SimpleLazyObject "prepared" for later calls
(within the context processors).
Why does this happen???
It never happens in other view and generic views I'm using in my project.
What's wrong with the form view?
Notice that
1 - the same happens even if I set self.template_name and call
self.render_to_response.
2 - it doesn't happen during the normal form view workflow
Giovanni
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