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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.auth.models import User
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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 slug = models.SlugField(max_length=64)
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14 description = models.TextField(blank=True)
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15 count = models.IntegerField(default=0)
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16
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17 def __unicode__(self):
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18 return self.title
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19
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20 class Meta:
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21 verbose_name_plural = 'Categories'
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22 ordering = ('title', )
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23
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24
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25 class PublicLinkManager(models.Manager):
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26 """The manager for all public links."""
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27 def get_query_set(self):
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28 return super(PublicLinkManager, self).get_query_set().filter(
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29 is_public=True).select_related()
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30
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31
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32 class LinkBase(models.Model):
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33 """Abstract model to aggregate common fields of a web link."""
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34 category = models.ForeignKey(Category)
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35 title = models.CharField(max_length=128)
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36 url = models.URLField(verify_exists=False, db_index=True)
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37 description = models.TextField(blank=True)
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38 user = models.ForeignKey(User)
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39 date_added = models.DateField()
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40
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41 class Meta:
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42 abstract = True
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43
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44
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45 class Link(LinkBase):
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46 """Model to represent a web link"""
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47 hits = models.IntegerField(default=0)
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48 is_public = models.BooleanField(default=False, db_index=True)
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49
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50 # Managers:
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51 objects = models.Manager()
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52 public_objects = PublicLinkManager()
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53
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54 class Meta:
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55 ordering = ('title', )
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56
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57 def __unicode__(self):
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58 return self.title
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59
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60 @models.permalink
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61 def get_absolute_url(self):
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62 return ('weblinks-link_detail', [str(self.id)])
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63
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64 def search_title(self):
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65 return self.title
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66
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67 def search_summary(self):
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68 return self.description
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69
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70
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71 class PendingLink(LinkBase):
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72 """This model represents links that users submit. They must be approved by
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73 an admin before they become visible on the site.
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74 """
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75 class Meta:
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76 ordering = ('date_added', )
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77
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78 def __unicode__(self):
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79 return self.title
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80
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81 def save(self, *args, **kwargs):
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82 if not self.pk:
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83 self.date_added = datetime.datetime.now()
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84 super(PendingLink, self).save(*args, **kwargs)
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85
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86
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87 class FlaggedLinkManager(models.Manager):
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88
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89 def create(self, link, user):
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90 flagged_link = FlaggedLink(link = link, user = user, approved = False)
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91 flagged_link.save()
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92
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93
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94 class FlaggedLink(models.Model):
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95 """Model to represent links that have been flagged as broken by users"""
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96 link = models.ForeignKey(Link)
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97 user = models.ForeignKey(User)
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98 date_flagged = models.DateField(auto_now_add = True)
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99 approved = models.BooleanField(default = False,
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100 help_text = 'Check this and save to remove the referenced link from the database')
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101
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102 objects = FlaggedLinkManager()
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103
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104 def save(self, *args, **kwargs):
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105 if self.approved:
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106 self.link.delete()
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107 self.delete()
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108 else:
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109 super(FlaggedLink, self).save(*args, **kwargs)
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110
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111 def url(self):
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112 return self.link.url
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113
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114 def get_link_url(self):
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115 return '<a href="%s">Link #%d</a>' % (self.link.get_absolute_url(),
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116 self.link.id)
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117 get_link_url.allow_tags = True
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118 get_link_url.short_description = "View Link on Site"
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119
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120 def __unicode__(self):
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121 return self.link.title
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122
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123 class Meta:
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124 ordering = ('-date_flagged', )
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