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@@ -1,139 +1,138 b'' | |||
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1 | 1 | from django.template.loader import render_to_string |
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2 | 2 | from boards.models import Thread, Post |
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3 | 3 | from django.db import models |
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4 | 4 | from django.db.models import Count, Sum |
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5 | 5 | from django.core.urlresolvers import reverse |
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6 | 6 | from boards.models.base import Viewable |
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7 | 7 | |
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8 | 8 | __author__ = 'neko259' |
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9 | 9 | |
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10 | 10 | MAX_TAG_FONT = 1 |
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11 | 11 | MIN_TAG_FONT = 0.2 |
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12 | 12 | |
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13 | 13 | TAG_POPULARITY_MULTIPLIER = 20 |
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14 | 14 | |
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15 | 15 | ARCHIVE_POPULARITY_MODIFIER = 0.5 |
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16 | 16 | |
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17 | 17 | |
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18 | 18 | class TagManager(models.Manager): |
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19 | 19 | |
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20 | 20 | def get_not_empty_tags(self): |
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21 | 21 | """ |
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22 | 22 | Gets tags that have non-archived threads. |
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23 | 23 | """ |
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24 | 24 | |
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25 | 25 | tags = self.annotate(Count('threads')) \ |
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26 |
.filter(threads__count__gt=0). |
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27 | .order_by('name') | |
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26 | .filter(threads__count__gt=0).order_by('name') | |
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28 | 27 | |
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29 | 28 | return tags |
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30 | 29 | |
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31 | 30 | |
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32 | 31 | class Tag(models.Model, Viewable): |
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33 | 32 | """ |
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34 | 33 | A tag is a text node assigned to the thread. The tag serves as a board |
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35 | 34 | section. There can be multiple tags for each thread |
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36 | 35 | """ |
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37 | 36 | |
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38 | 37 | objects = TagManager() |
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39 | 38 | |
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40 | 39 | class Meta: |
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41 | 40 | app_label = 'boards' |
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42 | 41 | ordering = ('name',) |
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43 | 42 | |
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44 | 43 | name = models.CharField(max_length=100, db_index=True) |
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45 | 44 | threads = models.ManyToManyField(Thread, null=True, |
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46 | 45 | blank=True, related_name='tag+') |
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47 | 46 | linked = models.ForeignKey('Tag', null=True, blank=True) |
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48 | 47 | |
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49 | 48 | def __unicode__(self): |
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50 | 49 | return self.name |
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51 | 50 | |
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52 | 51 | def is_empty(self): |
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53 | 52 | """ |
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54 | 53 | Checks if the tag has some threads. |
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55 | 54 | """ |
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56 | 55 | |
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57 | 56 | return self.get_thread_count() == 0 |
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58 | 57 | |
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59 | 58 | def get_thread_count(self): |
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60 | 59 | return self.threads.count() |
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61 | 60 | |
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62 | 61 | def get_popularity(self): |
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63 | 62 | """ |
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64 | 63 | Gets tag's popularity value as a percentage of overall board post |
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65 | 64 | count. |
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66 | 65 | """ |
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67 | 66 | |
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68 | 67 | all_post_count = Post.objects.count() |
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69 | 68 | |
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70 | 69 | tag_reply_count = 0.0 |
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71 | 70 | |
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72 | 71 | tag_reply_count += self.get_post_count() |
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73 | 72 | tag_reply_count +=\ |
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74 | 73 | self.get_post_count(archived=True) * ARCHIVE_POPULARITY_MODIFIER |
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75 | 74 | |
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76 | 75 | popularity = tag_reply_count / all_post_count |
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77 | 76 | |
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78 | 77 | return popularity |
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79 | 78 | |
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80 | 79 | def get_linked_tags(self): |
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81 | 80 | """ |
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82 | 81 | Gets tags linked to the current one. |
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83 | 82 | """ |
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84 | 83 | |
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85 | 84 | tag_list = [] |
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86 | 85 | self.get_linked_tags_list(tag_list) |
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87 | 86 | |
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88 | 87 | return tag_list |
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89 | 88 | |
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90 | 89 | def get_linked_tags_list(self, tag_list=[]): |
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91 | 90 | """ |
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92 | 91 | Returns the list of tags linked to current. The list can be got |
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93 | 92 | through returned value or tag_list parameter |
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94 | 93 | """ |
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95 | 94 | |
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96 | 95 | linked_tag = self.linked |
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97 | 96 | |
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98 | 97 | if linked_tag and not (linked_tag in tag_list): |
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99 | 98 | tag_list.append(linked_tag) |
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100 | 99 | |
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101 | 100 | linked_tag.get_linked_tags_list(tag_list) |
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102 | 101 | |
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103 | 102 | def get_font_value(self): |
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104 | 103 | """ |
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105 | 104 | Gets tag font value to differ most popular tags in the list |
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106 | 105 | """ |
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107 | 106 | |
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108 | 107 | popularity = self.get_popularity() |
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109 | 108 | |
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110 | 109 | font_value = popularity * Tag.objects.get_not_empty_tags().count() |
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111 | 110 | font_value = max(font_value, MIN_TAG_FONT) |
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112 | 111 | font_value = min(font_value, MAX_TAG_FONT) |
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113 | 112 | |
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114 | 113 | return str(font_value) |
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115 | 114 | |
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116 | 115 | def get_post_count(self, archived=False): |
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117 | 116 | """ |
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118 | 117 | Gets posts count for the tag's threads. |
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119 | 118 | """ |
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120 | 119 | |
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121 | 120 | posts_count = 0 |
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122 | 121 | |
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123 | 122 | threads = self.threads.filter(archived=archived) |
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124 | 123 | if threads.exists(): |
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125 | 124 | posts_count = threads.annotate(posts_count=Count('replies')).aggregate( |
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126 | 125 | posts_sum=Sum('posts_count'))['posts_sum'] |
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127 | 126 | |
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128 | 127 | if not posts_count: |
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129 | 128 | posts_count = 0 |
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130 | 129 | |
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131 | 130 | return posts_count |
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132 | 131 | |
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133 | 132 | def get_url(self): |
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134 | 133 | return reverse('tag', kwargs={'tag_name': self.name}) |
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135 | 134 | |
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136 | 135 | def get_view(self, *args, **kwargs): |
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137 | 136 | return render_to_string('boards/tag.html', { |
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138 | 137 | 'tag': self, |
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139 | }) No newline at end of file | |
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138 | }) |
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