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1 """
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2 This module contains the models for the weblinks application.
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3 """
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4 import datetime
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5
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6 from django.db import models
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7 from django.contrib import auth
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8
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9
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10 class Category(models.Model):
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11 """Links belong to categories"""
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12 title = models.CharField(max_length=64)
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13 description = models.TextField(blank=True)
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14 count = models.IntegerField(default=0)
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15
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16 def __unicode__(self):
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17 return self.title
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18
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19 class Meta:
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20 verbose_name_plural = 'Categories'
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21 ordering = ('title', )
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22
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23
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24 class PublicLinkManager(models.Manager):
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25 """The manager for all public links."""
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26 def get_query_set(self):
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27 return super(PublicLinkManager, self).get_query_set().filter(
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28 is_public=True).select_related()
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29
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30
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31 class LinkBase(models.Model):
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32 """Abstract model to aggregate common fields of a web link."""
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33 category = models.ForeignKey(Category)
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34 title = models.CharField(max_length=128)
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35 url = models.URLField(verify_exists=False, db_index=True)
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36 description = models.TextField(blank=True)
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37 user = models.ForeignKey(auth.models.User)
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38 date_added = models.DateField()
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39
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40 class Meta:
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41 abstract = True
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42
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43
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44 class Link(LinkBase):
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45 """Model to represent a web link"""
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46 hits = models.IntegerField(default=0)
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47 is_public = models.BooleanField(default=False, db_index=True)
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48
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49 # Managers:
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50 objects = models.Manager()
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51 public_objects = PublicLinkManager()
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52
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53 class Meta:
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54 ordering = ('title', )
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55
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56 def __unicode__(self):
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57 return self.title
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58
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59 @models.permalink
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60 def get_absolute_url(self):
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61 return ('weblinks-link_detail', [str(self.id)])
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62
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63
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64 class PendingLink(LinkBase):
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65 """This model represents links that users submit. They must be approved by
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66 an admin before they become visible on the site.
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67 """
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68 class Meta:
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69 ordering = ('date_added', )
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70
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71 def __unicode__(self):
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72 return self.title
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73
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74 def save(self, *args, **kwargs):
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75 if not self.pk:
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76 self.date_added = datetime.datetime.now()
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77 super(PendingLink, self).save(*args, **kwargs)
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78
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79
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80 class FlaggedLinkManager(models.Manager):
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81
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82 def create(self, link, user):
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83 flagged_link = FlaggedLink(link = link, user = user, approved = False)
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84 flagged_link.save()
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85
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86
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87 class FlaggedLink(models.Model):
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88 """Model to represent links that have been flagged as broken by users"""
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89 link = models.ForeignKey(Link)
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90 user = models.ForeignKey(auth.models.User)
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91 date_flagged = models.DateField(auto_now_add = True)
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92 approved = models.BooleanField(default = False,
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93 help_text = 'Check this and save to remove the referenced link from the database')
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94
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95 objects = FlaggedLinkManager()
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96
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97 def save(self, *args, **kwargs):
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98 if self.approved:
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99 self.link.delete()
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100 self.delete()
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101 else:
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102 super(FlaggedLink, self).save(*args, **kwargs)
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103
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104 def url(self):
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105 return self.link.url
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106
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107 def get_link_url(self):
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108 return '<a href="%s">Link #%d</a>' % (self.link.get_absolute_url(),
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109 self.link.id)
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110 get_link_url.allow_tags = True
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111 get_link_url.short_description = "View Link on Site"
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112
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113 def __unicode__(self):
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114 return self.link.title
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115
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116 class Meta:
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117 ordering = ('-date_flagged', )
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