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from django.http import Http404
from django.shortcuts import render_to_response
from django.template import RequestContext
from django.contrib.comments.models import Comment, KarmaScore
from django.utils.translation import ugettext as _
def vote(request, comment_id, vote, extra_context=None, context_processors=None):
"""
Rate a comment (+1 or -1)
Templates: `karma_vote_accepted`
Context:
comment
`comments.comments` object being rated
"""
if extra_context is None: extra_context = {}
rating = {'up': 1, 'down': -1}.get(vote, False)
if not rating:
raise Http404, "Invalid vote"
if not request.user.is_authenticated():
raise Http404, _("Anonymous users cannot vote")
try:
comment = Comment.objects.get(pk=comment_id)
except Comment.DoesNotExist:
raise Http404, _("Invalid comment ID")
if comment.user.id == request.user.id:
raise Http404, _("No voting for yourself")
KarmaScore.objects.vote(request.user.id, comment_id, rating)
# Reload comment to ensure we have up to date karma count
comment = Comment.objects.get(pk=comment_id)
return render_to_response('comments/karma_vote_accepted.html', {'comment': comment},
context_instance=RequestContext(request, extra_context, context_processors))
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