Mercurial > public > sg101

annotate gpp/downloads/models.py @ 241:27bee3ac85e6

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
For #93: fix url scheme for downloads.
author Brian Neal <bgneal@gmail.com>
date Wed, 15 Sep 2010 01:01:40 +0000
parents 8d13baeaa5c1
children d424b8bae71d
rev   line source
gremmie@1 1 """
gremmie@1 2 Models for the downloads application.
gremmie@1 3 """
gremmie@1 4 import os
gremmie@1 5
gremmie@1 6 import datetime
gremmie@1 7 from django.db import models
gremmie@1 8 from django.contrib.auth.models import User
gremmie@1 9 from django.template.defaultfilters import filesizeformat
gremmie@1 10
bgneal@128 11 from core.markup import site_markup
bgneal@124 12
gremmie@1 13
gremmie@1 14 class Category(models.Model):
gremmie@1 15 """Downloads belong to categories."""
gremmie@1 16 title = models.CharField(max_length=64)
bgneal@241 17 slug = models.SlugField(max_length=64)
gremmie@1 18 description = models.TextField(blank=True)
bgneal@192 19 count = models.IntegerField(default=0, blank=True)
gremmie@1 20
gremmie@1 21 class Meta:
gremmie@1 22 verbose_name_plural = 'Categories'
gremmie@1 23 ordering = ('title', )
gremmie@1 24
gremmie@1 25 def __unicode__(self):
gremmie@1 26 return self.title
gremmie@1 27
gremmie@1 28
gremmie@1 29 def download_path(instance, filename):
gremmie@1 30 """
gremmie@1 31 Creates a path for a download. Uses the current date to avoid filename
gremmie@1 32 clashes. Uses the current microsecond also to make the directory name
gremmie@1 33 harder to guess.
gremmie@1 34 """
gremmie@1 35 now = datetime.datetime.now()
gremmie@1 36 parts = ['downloads']
bgneal@210 37 parts.extend([str(p) for p in (now.year, now.month, now.day)])
bgneal@210 38 parts.append(hex((now.hour * 3600 + now.minute * 60 + now.second) * 1000 + (
bgneal@210 39 now.microsecond / 1000))[2:])
gremmie@1 40 parts.append(filename)
gremmie@1 41 return os.path.join(*parts)
gremmie@1 42
gremmie@1 43
gremmie@1 44 class PublicDownloadManager(models.Manager):
gremmie@1 45 """The manager for all public downloads."""
gremmie@1 46 def get_query_set(self):
bgneal@190 47 return super(PublicDownloadManager, self).get_query_set().filter(
bgneal@190 48 is_public=True).select_related()
gremmie@1 49
gremmie@1 50
bgneal@204 51 class DownloadBase(models.Model):
bgneal@204 52 """Abstract model to collect common download fields."""
gremmie@1 53 title = models.CharField(max_length=128)
gremmie@1 54 category = models.ForeignKey(Category)
gremmie@1 55 description = models.TextField()
gremmie@1 56 html = models.TextField(blank=True)
gremmie@1 57 file = models.FileField(upload_to=download_path)
gremmie@1 58 user = models.ForeignKey(User)
bgneal@204 59 date_added = models.DateTimeField()
gremmie@1 60 ip_address = models.IPAddressField('IP Address')
bgneal@204 61
bgneal@204 62 class Meta:
bgneal@204 63 abstract = True
bgneal@204 64
bgneal@204 65 def size(self):
bgneal@204 66 return filesizeformat(self.file.size)
bgneal@204 67
bgneal@204 68
bgneal@204 69 class PendingDownload(DownloadBase):
bgneal@204 70 """This model represents pending downloads created by users. These pending
bgneal@204 71 downloads must be approved by an admin before they turn into "real"
bgneal@204 72 Downloads and are visible on site.
bgneal@204 73 """
bgneal@204 74 class Meta:
bgneal@204 75 ordering = ('date_added', )
bgneal@204 76
bgneal@204 77 def __unicode__(self):
bgneal@204 78 return self.title
bgneal@204 79
bgneal@204 80 def save(self, *args, **kwargs):
bgneal@204 81 if not self.pk:
bgneal@204 82 self.date_added = datetime.datetime.now()
bgneal@204 83 self.html = site_markup(self.description)
bgneal@204 84 super(PendingDownload, self).save(*args, **kwargs)
bgneal@204 85
bgneal@204 86
bgneal@204 87 class Download(DownloadBase):
bgneal@204 88 """Model to represent a download."""
gremmie@1 89 hits = models.IntegerField(default=0)
gremmie@1 90 average_score = models.FloatField(default=0.0)
gremmie@1 91 total_votes = models.IntegerField(default=0)
gremmie@1 92 is_public = models.BooleanField(default=False, db_index=True)
gremmie@1 93
gremmie@1 94 # Managers:
gremmie@1 95 objects = models.Manager()
gremmie@1 96 public_objects = PublicDownloadManager()
gremmie@1 97
gremmie@1 98 def __unicode__(self):
gremmie@1 99 return self.title
gremmie@1 100
bgneal@14 101 @models.permalink
bgneal@14 102 def get_absolute_url(self):
bgneal@23 103 return ('downloads-details', [str(self.id)])
bgneal@14 104
bgneal@182 105 def save(self, *args, **kwargs):
bgneal@128 106 self.html = site_markup(self.description)
bgneal@182 107 super(Download, self).save(*args, **kwargs)
gremmie@1 108
gremmie@1 109 def vote(self, vote_value):
gremmie@1 110 """receives a vote_value and updates internal score accordingly"""
gremmie@1 111 total_score = self.average_score * self.total_votes
gremmie@1 112 total_score += vote_value
gremmie@1 113 self.total_votes += 1
gremmie@1 114 self.average_score = total_score / self.total_votes
gremmie@1 115 return self.average_score
gremmie@1 116
bgneal@221 117 def search_title(self):
bgneal@221 118 return self.title
bgneal@221 119
bgneal@221 120 def search_summary(self):
bgneal@221 121 return self.description
bgneal@221 122
gremmie@1 123
gremmie@1 124 class AllowedExtensionManager(models.Manager):
gremmie@1 125 def get_extension_list(self):
gremmie@1 126 return self.values_list('extension', flat=True)
gremmie@1 127
gremmie@1 128
gremmie@1 129 class AllowedExtension(models.Model):
gremmie@1 130 """Model to represent the list of allowed file extensions."""
bgneal@206 131 extension = models.CharField(max_length=8, help_text="e.g. .txt")
gremmie@1 132
gremmie@1 133 objects = AllowedExtensionManager()
gremmie@1 134
gremmie@1 135 def __unicode__(self):
gremmie@1 136 return self.extension
gremmie@1 137
gremmie@1 138 class Meta:
gremmie@1 139 ordering = ('extension', )
gremmie@1 140
gremmie@1 141
gremmie@1 142 class VoteRecord(models.Model):
gremmie@1 143 """Model to record the date that a user voted on a download."""
gremmie@1 144 download = models.ForeignKey(Download)
gremmie@1 145 user = models.ForeignKey(User)
gremmie@1 146 vote_date = models.DateTimeField(auto_now_add=True)
gremmie@1 147
gremmie@1 148 def __unicode__(self):
bgneal@192 149 return u"%s voted on '%s' on %s" % (
gremmie@1 150 self.user.username,
gremmie@1 151 self.download.title,
gremmie@1 152 self.vote_date.strftime('%b %d, %Y %H:%M:%S'))
gremmie@1 153
gremmie@1 154 class Meta:
gremmie@1 155 ordering = ('-vote_date', )