def __init__(self, data=None, activity=None, user=None):
self.user = user
if activity:
initial = {
'is_observed': Watching.is_subscribed(activity, user),
'activity': activity.id,
}
else:
initial = None
super(SubscribeForm, self).__init__(data, initial=initial)
def save(self):
activity = self.cleaned_data['activity']
Watching.subscribe(activity, self.user, self.cleaned_data['is_observed'])