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1 """Models for the messages application."""
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2
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3 import datetime
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4
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5 from django.db import models
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6 from django.db.models import Q
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7 from django.contrib.auth.models import User
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8
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9 from core.markup import site_markup
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10
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11
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12 class MessageManager(models.Manager):
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13 """The manager for the Message model. Provides convenience functions."""
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14
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15 def inbox(self, user):
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16 return self.filter(receiver=user,
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17 receiver_delete_date__isnull=True).select_related('sender')
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18
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19 def outbox(self, user):
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20 return self.filter(sender=user,
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21 sender_delete_date__isnull=True).select_related('receiver')
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22
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23 def trash(self, user):
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24 return self.filter(
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25 Q(sender=user, sender_delete_date__isnull=False) |
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26 Q(receiver=user, receiver_delete_date__isnull=False)
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27 ).select_related()
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28
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29 def unread_count(self, user):
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30 return self.filter(receiver=user, read_date__isnull=True).count()
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31
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32
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33 class Message(models.Model):
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34 """The Message is a model for a private message between users."""
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35 sender = models.ForeignKey(User, related_name='sender')
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36 receiver = models.ForeignKey(User, related_name='receiver')
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37 send_date = models.DateTimeField('Date Sent', null=True, blank=True)
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38 read_date = models.DateTimeField('Date Received', null=True, blank=True)
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39 reply_date = models.DateTimeField('Date Replied', null=True, blank=True)
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40 subject = models.CharField(max_length=120)
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41 message = models.TextField()
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42 html = models.TextField()
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43 sender_delete_date = models.DateTimeField(null=True, blank=True)
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44 receiver_delete_date = models.DateTimeField(null=True, blank=True)
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45 signature_attached = models.BooleanField(default=False)
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46
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47 objects = MessageManager()
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48
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49 def unread(self):
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50 """returns True if the message has not been read yet"""
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51 return self.read_date is None
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52
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53 def replied_to(self):
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54 """returns True if the message has been replied to"""
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55 return self.reply_date is not None
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56
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57 def is_deleted(self, user):
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58 """returns True if the message has been deleted by the user"""
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59 if (user == self.sender and self.sender_delete_date is not None) or (
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60 user == self.receiver and self.receiver_delete_date is not None):
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61 return True
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62 return False
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63
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64 def save(self, *args, **kwargs):
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65 if not self.id:
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66 self.send_date = datetime.datetime.now()
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67 self.html = site_markup(self.message)
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68 super(Message, self).save(*args, **kwargs)
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69
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70 def __unicode__(self):
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71 return self.subject
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72
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73 class Meta:
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74 ordering = ('-send_date', )
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75
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76
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77 class OptionsManager(models.Manager):
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78 """Manager class for Options model."""
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79
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80 def for_user(self, user):
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81 try:
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82 opts = self.get(user=user)
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83 except Options.DoesNotExist:
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84 opts = Options(user=user)
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85 opts.save()
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86 return opts
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87
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88
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89 class Options(models.Model):
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90 """Options is a model for user private message options."""
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91 user = models.ForeignKey(User, editable=False)
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92 attach_signature = models.BooleanField("Always attach signature?", default=True)
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93 notify_email = models.BooleanField("Notify me of new messages via email?", default=False)
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94
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95 objects = OptionsManager()
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96
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97 def __unicode__(self):
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98 return self.user.username
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99
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100 class Meta:
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101 verbose_name_plural = "Options"
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102
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103
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104 class Flag(models.Model):
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105 """The Flag model is used to represent when a receiver of a private message
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106 has flagged the message for spam or abuse.
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107
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108 """
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109 message = models.OneToOneField(Message)
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110 flag_date = models.DateTimeField()
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111 comments = models.TextField(blank=True)
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112
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113 def __unicode__(self):
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114 msg = self.message
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115 return "{} has flagged a PM from {}".format(msg.receiver.username,
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116 msg.sender.username)
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117
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118 def save(self, *args, **kwargs):
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119 if not self.id:
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120 self.flag_date = datetime.datetime.now()
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121 super(Flag, self).save(*args, **kwargs)
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122
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