feat: add self-referencing parent field to Category model and rename Product table to api_product

products/migrations/0003_category_parent_alter_product_table.py

@@ -0,0 +1,23 @@
+# Generated by Django 6.1 on 2026-08-16 09:56
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('products', '0002_alter_product_options'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='category',
+            name='parent',
+            field=models.ForeignKey(blank=True, db_column='parent_id', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='subcategories', to='products.category'),
+        ),
+        migrations.AlterModelTable(
+            name='product',
+            table='api_product',
+        ),
+    ]

products/models.py

@@ -6,6 +6,7 @@ class Category(models.Model):
     slug = models.SlugField(max_length=100, unique=True, blank=True)
     is_active = models.BooleanField(default=True)
     sort_order = models.IntegerField(default=0)
+    parent = models.ForeignKey('self', on_delete=models.SET_NULL, null=True, blank=True, related_name='subcategories', db_column='parent_id')
 
     class Meta:
         verbose_name_plural = "Categories"