UPDATE

farm_hub/migrations/0002_seed_default_catalog.py

@@ -0,0 +1,33 @@
+from django.db import migrations
+
+
+FARM_TYPES = {
+    "زراعی": ["گندم", "ذرت"],
+    "درختی": ["سیب", "پسته"],
+    "غرقابی": ["برنج"],
+}
+
+
+def seed_catalog(apps, schema_editor):
+    FarmType = apps.get_model("farm_hub", "FarmType")
+    Product = apps.get_model("farm_hub", "Product")
+
+    for farm_type_name, products in FARM_TYPES.items():
+        farm_type, _ = FarmType.objects.get_or_create(name=farm_type_name)
+        for product_name in products:
+            Product.objects.get_or_create(farm_type=farm_type, name=product_name)
+
+
+def unseed_catalog(apps, schema_editor):
+    FarmType = apps.get_model("farm_hub", "FarmType")
+    FarmType.objects.filter(name__in=FARM_TYPES.keys()).delete()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("farm_hub", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.RunPython(seed_catalog, unseed_catalog),
+    ]