From fff2274ce14c4ed7e27f227bdb4069726d0164eb Mon Sep 17 00:00:00 2001
From: Alex Ardhian <aardhian@gmail.com>
Date: Mon, 7 Sep 2026 15:47:23 +0700
Subject: [PATCH] ERP: unique index item_code, dokumentasi README, migration
 script update

---
 README.md                    | 19 +++++++++++++++++--
 scripts/migrate_item_code.py |  6 ++++++
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 3458eef..81e72b4 100644
--- a/README.md
+++ b/README.md
@@ -73,7 +73,22 @@ Addon kustom dalam folder `./addons/kosbar_erp_ext/` menyediakan:
 
 ---
 
-## 4. Struktur Database Utama (PostgreSQL)
+## 4. Product Category Code & Item Code
+
+### Field Baru (Auto-generated):
+* **Category Code** (`product.category.code`)
+  - 2 digit berdasarkan ID kategori
+  - Contoh: ID=1 → `01`, ID=7 → `07`, ID=10 → `10`
+
+* **Item Code** (`product.template.item_code`)
+  - Kombinasi: `parent_kode` (2 digit) + `kategori_kode` (2 digit) + `id_produk` (4 digit) + `nama_slug` (lowercase, tanpa spasi)
+  - Contoh: Kategori `05` (anak dari `01`), Produk ID=1, nama="Laptop ASUS"
+    - → `item_code = 01050001laptopasus`
+  - *Item Code otomatis diisi saat produk dibuat/diupdate.*
+
+---
+
+## 5. Struktur Database Utama (PostgreSQL)
 
 Tabel inti Odoo 19 yang digunakan dalam alur di atas:
 
@@ -99,7 +114,7 @@ Tabel inti Odoo 19 yang digunakan dalam alur di atas:
 
 ---
 
-## 5. Perintah Manajemen Docker
+## 6. Perintah Manajemen Docker
 
 * **Menjalankan stack:**
   ```bash
diff --git a/scripts/migrate_item_code.py b/scripts/migrate_item_code.py
index 7cca60b..8171a8a 100644
--- a/scripts/migrate_item_code.py
+++ b/scripts/migrate_item_code.py
@@ -1,6 +1,12 @@
 import re
 
 # Migration: isi code kategori & item_code produk untuk data existing
+env.cr.execute(
+    "CREATE UNIQUE INDEX IF NOT EXISTS product_template_item_code_uniq "
+    "ON product_template (item_code) WHERE item_code IS NOT NULL"
+)
+env.cr.commit()
+
 cats = env['product.category'].search([])
 for c in cats:
     if not c.code: