feeds.py

from django.contrib.syndication.feeds import Feed
from django.utils.feedgenerator import Atom1Feed
from compsoc.comms.models import Communication
from compsoc.events.models import Event, Signup, SeatingRevision
from datetime import datetime
from cms.models import PageRevision

from django.contrib.contenttypes.models import ContentType
from django.contrib.admin.models import LogEntry, ADDITION,CHANGE,DELETION

from tracker.models import Ticket

class LatestTicketChanges(Feed):
    title = "Latest changes in the CompSoc ticket tracker"
    link = "/"
    description = "Latest changes in the CompSoc ticket tracker"

    def items(self):
        ct = ContentType.objects.get(app_label="tracker", model="ticket")
        return LogEntry.objects.exclude(action_flag=DELETION).filter(content_type=ct).order_by('-action_time').select_related()[:15]

    def item_link(self, item):
        return "/tickets/detail/%i" % int(item.object_id)

class LatestPageRevisions(Feed):
    title = "Latest changes to the CompSoc cms pages"
    link = "/"
    description = "Latest changes to the CompSoc cms pages"

    def items(self):
        return PageRevision.objects.order_by('-date_written')[:10]

    def item_link(self, item):
        return "/admin/cms/pagerevision/%d/" % item.id


class LatestNews(Feed):
    title = "Latest Compsoc news items"
    link = "/"
    description = "All the updates from the University of Warwick Computing Society"

    def items(self):
        return Communication.objects.filter(type='N').order_by('-date')[:10]

    #def item_link(self,item):
        #return "/details/%i/" % item.id

    def item_pubdate(self,item):
        return datetime.fromordinal(item.date.toordinal())

class LatestAtomNews(LatestNews):
    feed_type = Atom1Feed
    subtitle = LatestNews.description

class NextEvents(Feed):
    title = "Next Compsoc Events"
    link = "/events/calendar/"
    description = "Next 10 events from the University of Warwick Computing Society"

    def items(self):
        return filter(lambda e: e.is_now_or_later(),Event.objects.order_by('start').exclude(displayFrom__gte=datetime.now()))[:10]

    def item_link(self,event):
        return "/events/details/%i/" % event.id

    def item_pubdate(self, item):
        """
        Takes an item, as returned by items(), and returns the item's
        pubdate.
        """
	return item.start

class NextAtomEvents(NextEvents):
    feed_type = Atom1Feed
    subtitle = NextEvents.description

class LatestMinutes(Feed):
    title = "Compsoc Exec Meeting Minutes"
    link = "/"
    description = "Minutes written by the secretary of the University of Warwick Computing Society"

    def items(self):
        return Communication.objects.filter(type='M').order_by('-date')[:10]

    def item_link(self,item):
        return "/details/%i/" % item.id

    def item_pubdate(self,item):
        return datetime.fromordinal(item.date.toordinal())

class LatestAtomMinutes(LatestMinutes):
    feed_type = Atom1Feed
    subtitle = LatestMinutes.description

class LatestNewsletters(Feed):
    title = "Compsoc Newsletters"
    link = "/"
    description = "Newsletters written by the University of Warwick Computing Society Exec"

    def items(self):
        return Communication.objects.filter(type='NL').order_by('-date')[:10]

    def item_link(self,item):
        return "/details/%i/" % item.id

    def item_pubdate(self,item):
        return datetime.fromordinal(item.date.toordinal())

class LatestAtomNewsletters(LatestNewsletters):
    feed_type = Atom1Feed
    subtitle = LatestNewsletters.description

class LatestSignups(Feed):
    def get_object(self, bits):
        if len(bits) != 1:
            raise ObjectDoesNotExist
        return Event.objects.get(id=bits[0])

    def title(self, obj):
        return "Recent signups for event %s" % obj

    def link(self, obj):
        if not obj:
            raise FeedDoesNotExist
        return obj.get_absolute_url()

    def items(self, obj):
        return Signup.objects.filter(event=obj).order_by('-time')[:10]

    def item_link(self, item):
        return item.event.get_absolute_url()

class LatestSeatingRevisions(Feed):
    def get_object(self, bits):
        if len(bits) != 1:
            raise ObjectDoesNotExist
        return Event.objects.get(id=bits[0])

    def title(self, obj):
        return "Latest seating revisions for %s" % obj

    def link(self, obj):
        if not obj:
            raise FeedDoesNotExist
        return obj.get_absolute_url()

    def items(self, obj):
        return SeatingRevision.objects.filter(event=obj).order_by('-number')[:10]