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     template = "auth/login.html"
  31     placeholdize = True
  32     title = _('Sign in')
  33     submit = _('Sign in')
  34     ajax_redirect = True
  35
  36     def __call__(self, request):
  37         if request.user.is_authenticated():
  38             return HttpResponseRedirect('/')
  39         return super(LoginFormView, self).__call__(request)
  40
  41     def success(self, form, request):
  42         auth.login(request, form.get_user())
  43
  44
  45 class RegisterFormView(AjaxableFormView):
  46     form_class = UserCreationForm
  47     placeholdize = True
  48     title = _('Register')
  49     submit = _('Register')
  50     ajax_redirect = True
  51     form_prefix = 'register'
  52
  53     def __call__(self, request):
  54         if request.user.is_authenticated():
  55             return HttpResponseRedirect('/')
  56         return super(RegisterFormView, self).__call__(request)
  57
  58     def success(self, form, request):
  59         form.save()
  60         user = auth.authenticate(
  61             username=form.cleaned_data['username'],
  62             password=form.cleaned_data['password1']
  63         )
  64         auth.login(request, user)
  65
  66
  67 class LoginRegisterFormView(LoginFormView):
  68     template = 'auth/login_register.html'
  69     title = _('You have to be logged in to continue')
  70
  71     def extra_context(self, request, obj):
  72         return {
  73             "register_form": placeholdized(UserCreationForm(prefix='register')),
  74             "register_submit": _('Register'),
  75         }
  76
  77
  78 @never_cache
  79 def logout_then_redirect(request):
  80     auth.logout(request)
  81     return HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
  82
  83
  84 def clock(request):
  85     """ Provides server time for jquery.countdown,
  86     in a format suitable for Date.parse()
  87     """
  88     return HttpResponse(datetime.now().strftime('%Y/%m/%d %H:%M:%S'))
  89
  90
  91 def publish_plan(request):
  92     cache_key = "publish_plan"
  93     plan = cache.get(cache_key)
  94
  95     if plan is None:
  96         plan = []
  97         try:
  98             feed = feedparser.parse(settings.PUBLISH_PLAN_FEED)
  99         except:
 100             pass
 101         else:
 102             for i in range(len(feed['entries'])):
 103                 plan.append({
 104                     'title': feed['entries'][i].title,
 105                     'link': feed['entries'][i].link,
 106                     })
 107         cache.set(cache_key, plan, 1800)
 108
 109     return render_to_response("publish_plan.html", {'plan': plan},
 110         context_instance=RequestContext(request))