Added a model for logging user role changes

main/migrations/0004_rolechangelogs.py

@@ -0,0 +1,27 @@
+# Generated by Django 3.1.6 on 2021-02-17 17:25
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('main', '0003_auto_20210216_2222'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='RoleChangeLogs',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.TextField()),
+                ('new_role', models.TextField()),
+                ('change_time', models.DateTimeField()),
+                ('changed_by', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='changed_by', to=settings.AUTH_USER_MODEL)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

main/models.py

@@ -20,3 +20,25 @@ def create_user_profile(sender, instance, created, **kwargs):
 @receiver(post_save, sender=User)
 def save_user_profile(sender, instance, **kwargs):
     instance.userprofile.save()
+
+
+class RoleChangeLogs(models.Model):
+    """
+    Модель для логирования изменений ролей пользователя
+
+    :param user: Пользователь, которому присвоили другую роль,
+    ForeignKey к модели :class:`django.contrib.auth.models.User`
+    :param name: Имя пользователя
+    :type name: :class:`str`
+    :param new_role: Присвоенная роль
+    :type new_role: :class:`str`
+    :param change_time: Дата изменения роли`
+    :type change_time: :class:`datetime.datetime`
+    :param changed_by: Кем была изменена роль,
+    ForeignKey к модели :class:`django.contrib.auth.models.User`
+    """
+    user = models.ForeignKey(to=User, on_delete=models.CASCADE)
+    name = models.TextField()
+    new_role = models.TextField()
+    change_time = models.DateTimeField()
+    changed_by = models.ForeignKey(to=User, on_delete=models.CASCADE, related_name='changed_by')