django1/django/contrib/comments/views/karma.py

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from django.core import template_loader
from django.core.extensions import DjangoContext as Context
from django.core.exceptions import Http404
from django.models.comments import comments, karma
from django.utils.httpwrappers import HttpResponse
def vote(request, comment_id, vote):
"""
Rate a comment (+1 or -1)
Templates: `karma_vote_accepted`
Context:
comment
`comments.comments` object being rated
"""
rating = {'up': 1, 'down': -1}.get(vote, False)
if not rating:
raise Http404, "Invalid vote"
if request.user.is_anonymous():
raise Http404, "Anonymous users cannot vote"
try:
comment = comments.get_object(id__exact=comment_id)
except comments.CommentDoesNotExist:
raise Http404, "Invalid comment ID"
if comment.user_id == request.user.id:
raise Http404, "No voting for yourself"
karma.vote(request.user.id, comment_id, rating)
# Reload comment to ensure we have up to date karma count
comment = comments.get_object(id__exact=comment_id)
t = template_loader.get_template('comments/karma_vote_accepted')
c = Context(request, {
'comment': comment
})
return HttpResponse(t.render(c))