db va type togirlandi

core/apps/api/migrations/0009_typemodel_category_type_fk.py

@@ -0,0 +1,43 @@
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    """
+    1-qadam: TypeModel jadvalini yaratish va categoryga type_fk ustunini qo'shish.
+    Eski 'type' (CharField) ustuni hali o'chmaydi — ma'lumot saqlanadi.
+    """
+
+    dependencies = [
+        ('api', '0008_subproductmodel_description'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='TypeModel',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('name', models.CharField(max_length=255, verbose_name='name')),
+            ],
+            options={
+                'verbose_name': 'TypeModel',
+                'verbose_name_plural': 'TypeModels',
+                'db_table': 'type',
+            },
+        ),
+        # Yangi FK ustun qo'shamiz (type_fk_id), eski type ustuni saqlanib qoladi
+        migrations.AddField(
+            model_name='categorymodel',
+            name='type_fk',
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name='categories',
+                to='api.typemodel',
+                verbose_name='type',
+            ),
+        ),
+    ]

core/apps/api/migrations/0010_migrate_type_data.py

@@ -0,0 +1,48 @@
+from django.db import migrations
+
+
+def forwards(apps, schema_editor):
+    """
+    Eski type (CharField: RESTAURANT/BAR) qiymatlaridan TypeModel yozuvlari yaratadi,
+    keyin har bir categoryni to'g'ri TypeModelga ulaydi.
+    """
+    TypeModel = apps.get_model('api', 'TypeModel')
+    CategoryModel = apps.get_model('api', 'CategoryModel')
+
+    # DB dagi barcha unique type qiymatlarini topib TypeModel yozuvlari yaratamiz
+    existing_types = (
+        CategoryModel.objects.exclude(type__isnull=True)
+        .exclude(type='')
+        .values_list('type', flat=True)
+        .distinct()
+    )
+
+    type_map = {}
+    for type_value in existing_types:
+        obj, _ = TypeModel.objects.get_or_create(name=type_value)
+        type_map[type_value] = obj
+
+    # Har bir categoryni mos TypeModelga ulaymiz
+    for category in CategoryModel.objects.exclude(type__isnull=True).exclude(type=''):
+        category.type_fk = type_map.get(category.type)
+        category.save(update_fields=['type_fk'])
+
+
+def backwards(apps, schema_editor):
+    CategoryModel = apps.get_model('api', 'CategoryModel')
+    CategoryModel.objects.update(type_fk=None)
+
+
+class Migration(migrations.Migration):
+    """
+    2-qadam: Mavjud type (RESTAURANT/BAR) qiymatlaridan TypeModel yozuvlari yaratib,
+    categorylarni ulaydi.
+    """
+
+    dependencies = [
+        ('api', '0009_typemodel_category_type_fk'),
+    ]
+
+    operations = [
+        migrations.RunPython(forwards, backwards),
+    ]

core/apps/api/migrations/0011_category_type_cleanup.py

@@ -0,0 +1,26 @@
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    """
+    3-qadam: Eski type (CharField) ustunini o'chirib, type_fk ni type deb nomini o'zgartirish.
+    """
+
+    dependencies = [
+        ('api', '0010_migrate_type_data'),
+    ]
+
+    operations = [
+        # Eski CharField type ustunini o'chiramiz
+        migrations.RemoveField(
+            model_name='categorymodel',
+            name='type',
+        ),
+        # type_fk ni type deb nomini o'zgartirамiz
+        migrations.RenameField(
+            model_name='categorymodel',
+            old_name='type_fk',
+            new_name='type',
+        ),
+    ]