python/lib/django-1.2/django/contrib/admin/models.py

   1 from django.db import models
   2 from django.contrib.contenttypes.models import ContentType
   3 from django.contrib.auth.models import User
   4 from django.contrib.admin.util import quote
   5 from django.utils.translation import ugettext_lazy as _
   6 from django.utils.encoding import smart_unicode
   7 from django.utils.safestring import mark_safe
   8
   9 ADDITION = 1
  10 CHANGE = 2
  11 DELETION = 3
  12
  13 class LogEntryManager(models.Manager):
  14     def log_action(self, user_id, content_type_id, object_id, object_repr, action_flag, change_message=''):
  15         e = self.model(None, None, user_id, content_type_id, smart_unicode(object_id), object_repr[:200], action_flag, change_message)
  16         e.save()
  17
  18 class LogEntry(models.Model):
  19     action_time = models.DateTimeField(_('action time'), auto_now=True)
  20     user = models.ForeignKey(User)
  21     content_type = models.ForeignKey(ContentType, blank=True, null=True)
  22     object_id = models.TextField(_('object id'), blank=True, null=True)
  23     object_repr = models.CharField(_('object repr'), max_length=200)
  24     action_flag = models.PositiveSmallIntegerField(_('action flag'))
  25     change_message = models.TextField(_('change message'), blank=True)
  26     objects = LogEntryManager()
  27     class Meta:
  28         verbose_name = _('log entry')
  29         verbose_name_plural = _('log entries')
  30         db_table = 'django_admin_log'
  31         ordering = ('-action_time',)
  32
  33     def __repr__(self):
  34         return smart_unicode(self.action_time)
  35
  36     def is_addition(self):
  37         return self.action_flag == ADDITION
  38
  39     def is_change(self):
  40         return self.action_flag == CHANGE
  41
  42     def is_deletion(self):
  43         return self.action_flag == DELETION
  44
  45     def get_edited_object(self):
  46         "Returns the edited object represented by this log entry"
  47         return self.content_type.get_object_for_this_type(pk=self.object_id)
  48
  49     def get_admin_url(self):
  50         """
  51         Returns the admin URL to edit the object represented by this log entry.
  52         This is relative to the Django admin index page.
  53         """
  54         return mark_safe(u"%s/%s/%s/" % (self.content_type.app_label, self.content_type.model, quote(self.object_id)))