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