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import time
from django.db import models
from django.utils import timezone
from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _
from django.template.loader import render_to_string
import feedparser
class RSSContent(models.Model):
"""
RSS feed inclusion content.
This content requires a cronjob on the server, which runs
``./manage.py update_rsscontent`` every couple of hours.
"""
title = models.CharField(_('title'), max_length=50,
help_text=_('The rss field is updated several times a day. A change in the title will only be visible on the home page after the next feed update.'))
link = models.URLField(_('link'))
rendered_content = models.TextField(_('pre-rendered content'), blank=True, editable=False)
last_updated = models.DateTimeField(_('last updated'), blank=True, null=True)
max_items = models.IntegerField(_('max. items'), default=5)
class Meta:
abstract = True
verbose_name = _('RSS feed')
verbose_name_plural = _('RSS feeds')
def render(self, **kwargs):
return mark_safe(self.rendered_content)
def cache_content(self, date_format=None, save=True):
feed = feedparser.parse(self.link)
entries = feed['entries'][:self.max_items]
if date_format:
for entry in entries:
entry.updated = time.strftime(date_format,
entry.updated_parsed)
self.rendered_content = render_to_string('content/rss/content.html', {
'feed_title': self.title,
'feed_link': feed['feed']['link'],
'entries': entries,
})
self.last_updated = timezone.now()
if save:
self.save()
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