forum/subscriptions.py

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