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@ncoghlan
Created May 30, 2012 13:10
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A Django CBV example using some of the power of Python classes
# Example based on http://lukeplant.me.uk/blog/posts/djangos-cbvs-were-a-mistake/
# Not tested, just designed to give a general idea of the games CBVs let you play
from django.core.urlresolvers import reverse_lazy
from django.views.generic.edit import ProcessFormView
# Utilities for interacting with a user
class UserViewMixin(object):
_high_priority_user = None
@property
def high_priority_user(self):
if self._high_priority_user is None:
user = self.request.user
self._high_priority = (not user.is_anonymous() and user.get_profile().high_priority)
return self._high_priority_user
def send_message(self, details):
email = details['email']
message = details['message']
send_contact_message(email, message)
if self.high_priority_user and details['urgent']:
send_text_message(email, message)
def get_contact_details(self):
user = self.request.user
if user.is_anonymous():
return {}
return {'email' : user.email}
# Put custom mixins first, since we can ensure they play nice with multiple inheritance
class ContactView(UserViewMixin, ProcessFormView):
template_name = 'contact.html'
success_url = reverse_lazy('contact_thanks')
def get_form_class(self):
return HighPriorityContactForm if self.high_priority_user else ContactForm
def get_initial(self):
initial = super(ContactView, self).get_initial()
initial.update(self.get_contact_details())
return initial
def form_valid(self, form):
self.send_message(form.cleaned_data)
return super(ContactView, self).form_valid(form)
def get_context_data(self, **kwargs):
context = super(ContactView, self).get_context_data(**kwargs)
context['high_priority_user'] = self.high_priority_user
return context
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