from django.db import models from django.contrib.contenttypes.models import ContentType from django.contrib.auth.models import User from django.contrib.admin.util import quote from django.utils.translation import ugettext_lazy as _ from django.utils.encoding import smart_unicode from django.utils.safestring import mark_safe ADDITION = 1 CHANGE = 2 DELETION = 3 class LogEntryManager(models.Manager): def log_action(self, user_id, content_type_id, object_id, object_repr, action_flag, change_message=''): e = self.model(None, None, user_id, content_type_id, smart_unicode(object_id), object_repr[:200], action_flag, change_message) e.save() class LogEntry(models.Model): action_time = models.DateTimeField(_('action time'), auto_now=True) user = models.ForeignKey(User) content_type = models.ForeignKey(ContentType, blank=True, null=True) object_id = models.TextField(_('object id'), blank=True, null=True) object_repr = models.CharField(_('object repr'), max_length=200) action_flag = models.PositiveSmallIntegerField(_('action flag')) change_message = models.TextField(_('change message'), blank=True) objects = LogEntryManager() class Meta: verbose_name = _('log entry') verbose_name_plural = _('log entries') db_table = 'django_admin_log' ordering = ('-action_time',) def __repr__(self): return smart_unicode(self.action_time) def __unicode__(self): if self.action_flag == ADDITION: return _('Added "%(object)s".') % {'object': self.object_repr} elif self.action_flag == CHANGE: return _('Changed "%(object)s" - %(changes)s') % {'object': self.object_repr, 'changes': self.change_message} elif self.action_flag == DELETION: return _('Deleted "%(object)s."') % {'object': self.object_repr} return _('LogEntry Object') def is_addition(self): return self.action_flag == ADDITION def is_change(self): return self.action_flag == CHANGE def is_deletion(self): return self.action_flag == DELETION def get_edited_object(self): "Returns the edited object represented by this log entry" return self.content_type.get_object_for_this_type(pk=self.object_id) def get_admin_url(self): """ Returns the admin URL to edit the object represented by this log entry. This is relative to the Django admin index page. """ if self.content_type and self.object_id: return mark_safe(u"%s/%s/%s/" % (self.content_type.app_label, self.content_type.model, quote(self.object_id))) return None