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import markdown
from django import forms
from django.http import HttpResponse
from django.shortcuts import get_object_or_404, redirect
from django.template.defaultfilters import slugify
from django.views.decorators.http import require_POST
from django.views.generic import (DetailView, ListView,
CreateView, UpdateView, DeleteView)
from .models import News
def find_unique_slug(newsitem):
'''Attempt to find a unique slug for this news item.'''
existing = list(News.objects.values_list(
'slug', flat=True).order_by().distinct())
suffixed = slug = slugify(newsitem.title)
suffix = 0
while suffixed in existing:
suffix += 1
suffixed = "%s-%d" % (slug, suffix)
return suffixed
class NewsForm(forms.ModelForm):
class Meta:
model = News
exclude = ('id', 'slug', 'author', 'postdate')
class NewsDetailView(DetailView):
model = News
template_name = "news/view.html"
class NewsListView(ListView):
queryset = News.objects.all().select_related('author').defer('content')
template_name = "news/list.html"
paginate_by = 50
class NewsCreateView(CreateView):
model = News
form_class = NewsForm
template_name = "news/add.html"
def form_valid(self, form):
# special logic, we auto-fill the author and slug fields
newsitem = form.save(commit=False)
newsitem.author = self.request.user
newsitem.slug = find_unique_slug(newsitem)
newsitem.save()
return super(NewsCreateView, self).form_valid(form)
class NewsEditView(UpdateView):
model = News
form_class = NewsForm
template_name = "news/add.html"
class NewsDeleteView(DeleteView):
model = News
template_name = "news/delete.html"
success_url = "/news/"
def view_redirect(request, object_id):
newsitem = get_object_or_404(News, pk=object_id)
return redirect(newsitem, permanent=True)
@require_POST
def preview(request):
data = request.POST.get('data', '')
markup = markdown.markdown(data, safe_mode=True)
return HttpResponse(markup)
# vim: set ts=4 sw=4 et:
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