wolnelektury/views.py

   1 from datetime import datetime
   2 import feedparser
   3
   4 from django.contrib import auth
   5 from django.contrib.auth.forms import UserCreationForm, AuthenticationForm
   6 from django.core.cache import cache
   7 from django.http import HttpResponse, HttpResponseRedirect
   8 from django.shortcuts import render_to_response
   9 from django.template import RequestContext
  10 from django.utils.http import urlquote_plus
  11 from django.utils.translation import ugettext_lazy as _
  12 from django.views.decorators.cache import never_cache
  13
  14 from django.conf import settings
  15 from ajaxable.utils import AjaxableFormView
  16 from catalogue.models import Book
  17 from ajaxable.utils import placeholdized
  18
  19
  20 @never_cache
  21 def main_page(request):
  22     last_published = Book.objects.filter(parent=None).order_by('-created_at')[:4]
  23
  24     return render_to_response("main_page.html", locals(),
  25         context_instance=RequestContext(request))
  26
  27
  28 class LoginFormView(AjaxableFormView):
  29     form_class = AuthenticationForm
  30     placeholdize = True
  31     title = _('Sign in')
  32     submit = _('Sign in')
  33     ajax_redirect = True
  34
  35     def __call__(self, request):
  36         if request.user.is_authenticated():
  37             return HttpResponseRedirect('/')
  38         return super(LoginFormView, self).__call__(request)
  39
  40     def success(self, form, request):
  41         auth.login(request, form.get_user())
  42
  43
  44 class RegisterFormView(AjaxableFormView):
  45     form_class = UserCreationForm
  46     placeholdize = True
  47     title = _('Register')
  48     submit = _('Register')
  49     ajax_redirect = True
  50     form_prefix = 'register'
  51
  52     def __call__(self, request):
  53         if request.user.is_authenticated():
  54             return HttpResponseRedirect('/')
  55         return super(RegisterFormView, self).__call__(request)
  56
  57     def success(self, form, request):
  58         form.save()
  59         user = auth.authenticate(
  60             username=form.cleaned_data['username'],
  61             password=form.cleaned_data['password1']
  62         )
  63         auth.login(request, user)
  64
  65
  66 class LoginRegisterFormView(LoginFormView):
  67     template = 'auth/login_register.html'
  68     title = _('You have to be logged in to continue')
  69
  70     def extra_context(self, request, obj):
  71         return {
  72             "register_form": placeholdized(UserCreationForm(prefix='register')),
  73             "register_submit": _('Register'),
  74         }
  75
  76
  77 @never_cache
  78 def logout_then_redirect(request):
  79     auth.logout(request)
  80     return HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
  81
  82
  83 def clock(request):
  84     """ Provides server time for jquery.countdown,
  85     in a format suitable for Date.parse()
  86     """
  87     return HttpResponse(datetime.now().strftime('%Y/%m/%d %H:%M:%S'))
  88
  89
  90 def publish_plan(request):
  91     cache_key = "publish_plan"
  92     plan = cache.get(cache_key)
  93
  94     if plan is None:
  95         plan = []
  96         try:
  97             feed = feedparser.parse(settings.PUBLISH_PLAN_FEED)
  98         except:
  99             pass
 100         else:
 101             for i in range(len(feed['entries'])):
 102                 plan.append({
 103                     'title': feed['entries'][i].title,
 104                     'link': feed['entries'][i].link,
 105                     })
 106         cache.set(cache_key, plan, 1800)
 107
 108     return render_to_response("publish_plan.html", {'plan': plan},
 109         context_instance=RequestContext(request))