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annotate messages/models.py @ 661:15dbe0ccda95

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Prevent exceptions when viewing downloads in the admin when the file doesn't exist on the filesystem. This is usually seen in development but can also happen in production if the file is missing.
author Brian Neal <bgneal@gmail.com>
date Tue, 14 May 2013 21:02:47 -0500
parents ee87ea74d46b
children 4a4fa174a0ec
rev   line source
gremmie@1 1 """Models for the messages application."""
gremmie@1 2
gremmie@1 3 import datetime
bgneal@128 4
gremmie@1 5 from django.db import models
gremmie@1 6 from django.db.models import Q
gremmie@1 7 from django.contrib.auth.models import User
bgneal@128 8
bgneal@128 9 from core.markup import site_markup
gremmie@1 10
gremmie@1 11
gremmie@1 12 class MessageManager(models.Manager):
gremmie@1 13 """The manager for the Message model. Provides convenience functions."""
gremmie@1 14
gremmie@1 15 def inbox(self, user):
gremmie@1 16 return self.filter(receiver=user,
bgneal@425 17 receiver_delete_date__isnull=True).select_related('sender')
gremmie@1 18
gremmie@1 19 def outbox(self, user):
gremmie@1 20 return self.filter(sender=user,
bgneal@425 21 sender_delete_date__isnull=True).select_related('receiver')
gremmie@1 22
gremmie@1 23 def trash(self, user):
gremmie@1 24 return self.filter(
gremmie@1 25 Q(sender=user, sender_delete_date__isnull=False) |
gremmie@1 26 Q(receiver=user, receiver_delete_date__isnull=False)
bgneal@425 27 ).select_related()
gremmie@1 28
gremmie@1 29 def unread_count(self, user):
gremmie@1 30 return self.filter(receiver=user, read_date__isnull=True).count()
gremmie@1 31
gremmie@1 32
gremmie@1 33 class Message(models.Model):
gremmie@1 34 """The Message is a model for a private message between users."""
gremmie@1 35 sender = models.ForeignKey(User, related_name='sender')
gremmie@1 36 receiver = models.ForeignKey(User, related_name='receiver')
gremmie@1 37 send_date = models.DateTimeField('Date Sent', null=True, blank=True)
gremmie@1 38 read_date = models.DateTimeField('Date Received', null=True, blank=True)
gremmie@1 39 reply_date = models.DateTimeField('Date Replied', null=True, blank=True)
gremmie@1 40 subject = models.CharField(max_length=120)
gremmie@1 41 message = models.TextField()
gremmie@1 42 html = models.TextField()
gremmie@1 43 sender_delete_date = models.DateTimeField(null=True, blank=True)
gremmie@1 44 receiver_delete_date = models.DateTimeField(null=True, blank=True)
gremmie@1 45 signature_attached = models.BooleanField(default=False)
gremmie@1 46
gremmie@1 47 objects = MessageManager()
gremmie@1 48
gremmie@1 49 def unread(self):
gremmie@1 50 """returns True if the message has not been read yet"""
gremmie@1 51 return self.read_date is None
gremmie@1 52
gremmie@1 53 def replied_to(self):
gremmie@1 54 """returns True if the message has been replied to"""
gremmie@1 55 return self.reply_date is not None
gremmie@1 56
gremmie@1 57 def is_deleted(self, user):
gremmie@1 58 """returns True if the message has been deleted by the user"""
gremmie@1 59 if (user == self.sender and self.sender_delete_date is not None) or (
gremmie@1 60 user == self.receiver and self.receiver_delete_date is not None):
gremmie@1 61 return True
gremmie@1 62 return False
gremmie@1 63
bgneal@182 64 def save(self, *args, **kwargs):
gremmie@1 65 if not self.id:
gremmie@1 66 self.send_date = datetime.datetime.now()
bgneal@128 67 self.html = site_markup(self.message)
bgneal@182 68 super(Message, self).save(*args, **kwargs)
gremmie@1 69
gremmie@1 70 def __unicode__(self):
gremmie@1 71 return self.subject
gremmie@1 72
gremmie@1 73 class Meta:
gremmie@1 74 ordering = ('-send_date', )
gremmie@1 75
gremmie@1 76
gremmie@1 77 class OptionsManager(models.Manager):
gremmie@1 78 """Manager class for Options model."""
gremmie@1 79
gremmie@1 80 def for_user(self, user):
gremmie@1 81 try:
gremmie@1 82 opts = self.get(user=user)
gremmie@1 83 except Options.DoesNotExist:
gremmie@1 84 opts = Options(user=user)
gremmie@1 85 opts.save()
gremmie@1 86 return opts
gremmie@1 87
gremmie@1 88
gremmie@1 89 class Options(models.Model):
gremmie@1 90 """Options is a model for user private message options."""
gremmie@1 91 user = models.ForeignKey(User, editable=False)
gremmie@1 92 attach_signature = models.BooleanField("Always attach signature?", default=True)
gremmie@1 93 notify_email = models.BooleanField("Notify me of new messages via email?", default=False)
gremmie@1 94
gremmie@1 95 objects = OptionsManager()
gremmie@1 96
gremmie@1 97 def __unicode__(self):
gremmie@1 98 return self.user.username
gremmie@1 99
bgneal@206 100 class Meta:
bgneal@206 101 verbose_name_plural = "Options"
gremmie@1 102
bgneal@206 103