forum/subscriptions.py

   1 import os\r
   2 import re\r
   3 import datetime\r
   4 from forum.models import User, Question, Comment, QuestionSubscription, SubscriptionSettings, Answer\r
   5 from forum.utils.mail import send_email\r
   6 from django.utils.translation import ugettext as _\r
   7 from forum.actions import AskAction, AnswerAction, CommentAction, AcceptAnswerAction, UserJoinsAction, QuestionViewAction\r
   8 from django.conf import settings\r
   9 from django.db.models import Q, F\r
  10 \r
  11 def create_subscription_if_not_exists(question, user):\r
  12     try:\r
  13         subscription = QuestionSubscription.objects.get(question=question, user=user)\r
  14     except:\r
  15         subscription = QuestionSubscription(question=question, user=user)\r
  16         subscription.save()\r
  17 \r
  18 def apply_default_filters(queryset, excluded_id):\r
  19     return queryset.values('email', 'username').exclude(id=excluded_id)\r
  20 \r
  21 def create_recipients_dict(usr_list):\r
  22     return [(s['username'], s['email'], {'username': s['username']}) for s in usr_list]\r
  23 \r
  24 def question_posted(action, new):\r
  25     question = action.node\r
  26 \r
  27     subscribers = User.objects.values('email', 'username').filter(\r
  28             Q(subscription_settings__enable_notifications=True, subscription_settings__new_question='i') |\r
  29             (Q(subscription_settings__new_question_watched_tags='i') &\r
  30               Q(marked_tags__name__in=question.tagnames.split(' ')) &\r
  31               Q(tag_selections__reason='good'))\r
  32     ).exclude(id=question.author.id).distinct()\r
  33 \r
  34     recipients = create_recipients_dict(subscribers)\r
  35 \r
  36     send_email(settings.EMAIL_SUBJECT_PREFIX + _("New question on %(app_name)s") % dict(app_name=settings.APP_SHORT_NAME),\r
  37                recipients, "notifications/newquestion.html", {\r
  38         'question': question,\r
  39     })\r
  40 \r
  41     if question.author.subscription_settings.questions_asked:\r
  42         subscription = QuestionSubscription(question=question, user=question.author)\r
  43         subscription.save()\r
  44 \r
  45     new_subscribers = User.objects.filter(\r
  46             Q(subscription_settings__all_questions=True) |\r
  47             Q(subscription_settings__all_questions_watched_tags=True,\r
  48                     marked_tags__name__in=question.tagnames.split(' '),\r
  49                     tag_selections__reason='good'))\r
  50 \r
  51     for user in new_subscribers:\r
  52         create_subscription_if_not_exists(question, user)\r
  53 \r
  54 AskAction.hook(question_posted)\r
  55 \r
  56 \r
  57 def answer_posted(action, new):\r
  58     answer = action.node\r
  59     question = answer.question\r
  60 \r
  61     subscribers = question.subscribers.values('email', 'username').filter(\r
  62             subscription_settings__enable_notifications=True,\r
  63             subscription_settings__notify_answers=True,\r
  64             subscription_settings__subscribed_questions='i'\r
  65     ).exclude(id=answer.author.id).distinct()\r
  66     recipients = create_recipients_dict(subscribers)\r
  67 \r
  68     send_email(settings.EMAIL_SUBJECT_PREFIX + _("New answer to '%(question_title)s'") % dict(question_title=question.title),\r
  69                recipients, "notifications/newanswer.html", {\r
  70         'question': question,\r
  71         'answer': answer\r
  72     }, threaded=False)\r
  73 \r
  74     if answer.author.subscription_settings.questions_answered:\r
  75         create_subscription_if_not_exists(question, answer.author)\r
  76 \r
  77 AnswerAction.hook(answer_posted)\r
  78 \r
  79 \r
  80 def comment_posted(action, new):\r
  81     comment = action.node\r
  82     post = comment.content_object\r
  83 \r
  84     if post.__class__ == Question:\r
  85         question = post\r
  86     else:\r
  87         question = post.question\r
  88 \r
  89     subscribers = question.subscribers.values('email', 'username')\r
  90 \r
  91     q_filter = Q(subscription_settings__notify_comments=True) | Q(subscription_settings__notify_comments_own_post=True, id=post.author.id)\r
  92 \r
  93     #inreply = re.search('@\w+', comment.comment)\r
  94     #if inreply is not None:\r
  95     #    q_filter = q_filter | Q(subscription_settings__notify_reply_to_comments=True,\r
  96     #                            username__istartswith=inreply.group(0)[1:],\r
  97     ##                            comments__object_id=post.id,\r
  98     #                            comments__content_type=ContentType.objects.get_for_model(post.__class__)\r
  99     #                            )\r
 100 \r
 101     subscribers = subscribers.filter(\r
 102             q_filter, subscription_settings__subscribed_questions='i', subscription_settings__enable_notifications=True\r
 103     ).exclude(id=comment.user.id).distinct()\r
 104 \r
 105     recipients = create_recipients_dict(subscribers)\r
 106 \r
 107     send_email(settings.EMAIL_SUBJECT_PREFIX + _("New comment on %(question_title)s") % dict(question_title=question.title),\r
 108                recipients, "notifications/newcomment.html", {\r
 109                 'comment': comment,\r
 110                 'post': post,\r
 111                 'question': question,\r
 112     }, threaded=False)\r
 113 \r
 114     if comment.user.subscription_settings.questions_commented:\r
 115         create_subscription_if_not_exists(question, comment.user)\r
 116 \r
 117 CommentAction.hook(comment_posted)\r
 118 \r
 119 \r
 120 def answer_accepted(action, new):\r
 121     question = action.node.question\r
 122 \r
 123     subscribers = question.subscribers.values('email', 'username').filter(\r
 124             subscription_settings__enable_notifications=True,\r
 125             subscription_settings__notify_accepted=True,\r
 126             subscription_settings__subscribed_questions='i'\r
 127     ).exclude(id=instance.accepted_by.id).distinct()\r
 128     recipients = create_recipients_dict(subscribers)\r
 129 \r
 130     send_email(settings.EMAIL_SUBJECT_PREFIX + _("An answer to '%(question_title)s' was accepted") % dict(question_title=question.title),\r
 131                recipients, "notifications/answeraccepted.html", {\r
 132         'question': question,\r
 133         'answer': action.node\r
 134     }, threaded=False)\r
 135 \r
 136 AcceptAnswerAction.hook(answer_accepted)\r
 137 \r
 138 \r
 139 def member_joined(action, new):\r
 140     subscribers = User.objects.values('email', 'username').filter(\r
 141             subscription_settings__enable_notifications=True,\r
 142             subscription_settings__member_joins='i'\r
 143     ).exclude(id=action.user.id).distinct()\r
 144 \r
 145     recipients = create_recipients_dict(subscribers)\r
 146 \r
 147     send_email(settings.EMAIL_SUBJECT_PREFIX + _("%(username)s is a new member on %(app_name)s") % dict(username=instance.username, app_name=settings.APP_SHORT_NAME),\r
 148                recipients, "notifications/newmember.html", {\r
 149         'newmember': action.user,\r
 150     }, threaded=False)\r
 151 \r
 152 UserJoinsAction.hook(member_joined)\r
 153 \r
 154 def question_viewed(action, new):\r
 155     if not action.viewuser.is_authenticated():\r
 156         return\r
 157 \r
 158     try:\r
 159         subscription = QuestionSubscription.objects.get(question=action.node, user=action.viewuser)\r
 160         subscription.last_view = datetime.datetime.now()\r
 161         subscription.save()\r
 162     except:\r
 163         if action.viewuser.subscription_settings.questions_viewed:\r
 164             subscription = QuestionSubscription(question=action.node, user=action.viewuser)\r
 165             subscription.save()\r
 166 \r
 167 QuestionViewAction.hook(question_viewed)\r
 168 \r
 169 \r
 170 #todo: translate this\r
 171 #record_answer_event_re = re.compile("You have received (a|\d+) .*new response.*")\r
 172 #def record_answer_event(instance, created, **kwargs):\r
 173 #    if created:\r
 174 #        q_author = instance.question.author\r
 175 #        found_match = False\r
 176 #        #print 'going through %d messages' % q_author.message_set.all().count()\r
 177 #        for m in q_author.message_set.all():\r
 178 ##            #print m.message\r
 179 # #           match = record_answer_event_re.search(m.message)\r
 180 #            if match:\r
 181 #                found_match = True\r
 182 #                try:\r
 183 #                    cnt = int(match.group(1))\r
 184 #                except:\r
 185 #                    cnt = 1\r
 186 ##                m.message = u"You have received %d <a href=\"%s?sort=responses\">new responses</a>."\\r
 187 # #                           % (cnt+1, q_author.get_profile_url())\r
 188 #\r
 189 #                m.save()\r
 190 #                break\r
 191 #        if not found_match:\r
 192 #            msg = u"You have received a <a href=\"%s?sort=responses\">new response</a>."\\r
 193 #                    % q_author.get_profile_url()\r
 194 #\r
 195 #            q_author.message_set.create(message=msg)\r
 196 #\r
 197 #post_save.connect(record_answer_event, sender=Answer)