89 lines
2.2 KiB
Python
89 lines
2.2 KiB
Python
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# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
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# SPDX-License-Identifier: GPL-3.0-or-later
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from django.conf import settings
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from django.contrib.contenttypes.models import ContentType
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from django.core.exceptions import ValidationError
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from django.db import models
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from django.utils import timezone
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from django.utils.translation import gettext_lazy as _
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class Changelog(models.Model):
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"""
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Store each modification in the database (except sessions and logging),
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including creating, editing and deleting models.
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"""
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user = models.ForeignKey(
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settings.AUTH_USER_MODEL,
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on_delete=models.PROTECT,
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null=True,
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verbose_name=_('user'),
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)
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ip = models.GenericIPAddressField(
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null=True,
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blank=True,
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verbose_name=_("IP Address")
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)
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model = models.ForeignKey(
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ContentType,
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on_delete=models.PROTECT,
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null=False,
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blank=False,
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verbose_name=_('model'),
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)
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instance_pk = models.CharField(
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max_length=255,
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null=False,
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blank=False,
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verbose_name=_('identifier'),
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)
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previous = models.TextField(
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blank=True,
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default="",
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verbose_name=_('previous data'),
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)
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data = models.TextField(
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blank=True,
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default="",
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verbose_name=_('new data'),
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)
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action = models.CharField( # create, edit or delete
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max_length=16,
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null=False,
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blank=False,
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choices=[
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('create', _('create')),
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('edit', _('edit')),
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('delete', _('delete')),
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],
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default='edit',
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verbose_name=_('action'),
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)
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timestamp = models.DateTimeField(
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null=False,
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blank=False,
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default=timezone.now,
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name='timestamp',
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verbose_name=_('timestamp'),
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)
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def delete(self, using=None, keep_parents=False):
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raise ValidationError(_("Logs cannot be destroyed."))
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class Meta:
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verbose_name = _("changelog")
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verbose_name_plural = _("changelogs")
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def __str__(self):
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return _("Changelog of type \"{action}\" for model {model} at {timestamp}").format(
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action=self.get_action_display(), model=str(self.model), timestamp=str(self.timestamp))
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