Installed django simple history and fixed models.py return __str__

ivy/products/migrations/0002_historicalproduct.py

@@ -0,0 +1,39 @@
+# Generated by Django 4.1.7 on 2023-03-07 06:23
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+import simple_history.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('products', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='HistoricalProduct',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('name', models.CharField(max_length=20)),
+                ('quantity', models.IntegerField(default=0)),
+                ('date_added', models.DateTimeField(default=django.utils.timezone.now, editable=False)),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'verbose_name': 'historical product',
+                'verbose_name_plural': 'historical products',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+    ]