forum/feed.py

   1 # -*- coding: utf-8 -*-
   2
   3 try:
   4     from django.contrib.syndication.views import Feed, FeedDoesNotExist, add_domain
   5     old_version = False
   6 except:
   7     from django.contrib.syndication.feeds import Feed, FeedDoesNotExist, add_domain
   8     old_version = True
   9
  10 from django.http import HttpResponse
  11 from django.utils.encoding import smart_unicode
  12 from django.utils.translation import ugettext as _
  13 from django.utils.safestring import mark_safe
  14 from models import Question
  15 from forum import settings
  16 from forum.modules import decorate
  17 from forum.utils.pagination import generate_uri
  18
  19 @decorate(add_domain, needs_origin=False)
  20 def add_domain(domain, url, *args, **kwargs):
  21     return "%s%s" % (settings.APP_BASE_URL, url)
  22
  23 class BaseNodeFeed(Feed):
  24     if old_version:
  25         title_template = "feeds/rss_title.html"
  26         description_template = "feeds/rss_description.html"
  27
  28     def __init__(self, request, title, description, url):
  29         self._title = u"%s" % smart_unicode(title)
  30         self._description = mark_safe(u"%s" % smart_unicode(description))
  31         self._url = url
  32
  33         if old_version:
  34             super(BaseNodeFeed, self).__init__('', request)
  35
  36     def title(self):
  37         return u"%s" % smart_unicode(self._title)
  38
  39     def link(self):
  40         return self._url
  41
  42     def description(self):
  43         return u"%s" % smart_unicode(self._description)
  44
  45     def item_title(self, item):
  46         return u"%s" % smart_unicode(item.title)
  47
  48     def item_description(self, item):
  49         return u"%s" % smart_unicode(item.html)
  50
  51     def item_link(self, item):
  52         return item.leaf.get_absolute_url()
  53
  54     def item_author_name(self, item):
  55         return u"%s" % smart_unicode(item.author.username)
  56
  57     def item_author_link(self, item):
  58         return item.author.get_profile_url()
  59
  60     def item_pubdate(self, item):
  61         return item.added_at
  62
  63     if old_version:
  64         def __call__(self, request):
  65             feedgen = self.get_feed('')
  66             response = HttpResponse(mimetype=feedgen.mime_type)
  67             feedgen.write(response, 'utf-8')
  68             return response
  69
  70
  71 class RssQuestionFeed(BaseNodeFeed):
  72     def __init__(self, request, question_list, title, description):
  73         url = request.path + "?" + generate_uri(request.GET, (_('page'), _('pagesize'), _('sort')))
  74         super(RssQuestionFeed, self).__init__(request, title, description, url)
  75
  76         self._question_list = question_list
  77
  78     def item_categories(self, item):
  79         return item.tagname_list()
  80
  81     def items(self):
  82        return self._question_list[:30]
  83
  84 class RssAnswerFeed(BaseNodeFeed):
  85     if old_version:
  86         title_template = "feeds/rss_answer_title.html"
  87
  88     def __init__(self, request, question, include_comments=False):
  89         super(RssAnswerFeed, self).__init__(
  90             request, _("Answers to: %s") % smart_unicode(question.title),
  91             question.html,
  92             question.get_absolute_url()
  93         )
  94         self._question = question
  95         self._include_comments = include_comments
  96
  97     def items(self):
  98         if self._include_comments:
  99             qs = self._question.all_children
 100         else:
 101             qs = self._question.answers
 102
 103         return qs.filter_state(deleted=False).order_by('-added_at')[:30]
 104
 105     def item_title(self, item):
 106         if item.node_type == "answer":
 107             return _("Answer by %s") % smart_unicode(item.author.username)
 108         else:
 109             return _("Comment by %(cauthor)s on %(pauthor)s's %(qora)s") % dict(
 110                 cauthor=smart_unicode(item.author.username),
 111                 pauthor=smart_unicode(item.parent.author.username),
 112                 qora=(item.parent.node_type == "answer" and _("answer") or _("question"))
 113             )