feat: Prevent non-income account overrides and strip taxes from POS down payments applied from sale orders.

README.md

@@ -17,6 +17,8 @@ For example, if a session has sales paid with both cash and credit card, instead
 - Works with all payment methods (cash, bank transfers, credit cards, etc.)
 - Preserves tax calculations and reporting
 - Allows linking specific income accounts to payment methods
+- Prevents down payments from incorrectly overriding non-income accounts (e.g. liabilities)
+- Strips taxes natively when applying down payments directly from a Sales Order in POS
 
 ## Configuration
 

__manifest__.py

@@ -30,6 +30,11 @@
     'demo': [
         # 'demo/demo.xml',
     ],
+    'assets': {
+        'point_of_sale._assets_pos': [
+            'split_pendapatan_payment/static/src/app/**/*',
+        ],
+    },
     'installable': True,
     'application': False,
     'auto_install': False,

models/pos_session.py

@@ -191,6 +191,10 @@ class PosSession(models.Model):
                             return
 
                         target_account_id = sale_key[0]
+                        original_account = self.env['account.account'].browse(target_account_id)
+                        is_income_account = original_account.account_type in ('income', 'income_other')
+                        
+                        if is_income_account:
                             if is_discount_part:
                                 if payment.payment_method_id.discount_account_id:
                                     target_account_id = payment.payment_method_id.discount_account_id.id

static/src/app/sale_order_management_screen.js

@@ -0,0 +1,27 @@
+/** @odoo-module */
+
+import { SaleOrderManagementScreen } from "@pos_sale/app/order_management_screen/sale_order_management_screen/sale_order_management_screen";
+import { patch } from "@web/core/utils/patch";
+
+patch(SaleOrderManagementScreen.prototype, {
+    _createDownpaymentLines(sale_order, total_down_payment, clickedOrder, down_payment_product) {
+        const order = this.pos.get_order();
+        const linesBefore = order.get_orderlines().length;
+
+        // Call the original method to create the lines
+        super._createDownpaymentLines(sale_order, total_down_payment, clickedOrder, down_payment_product);
+
+        const linesAfter = order.get_orderlines().length;
+        const orderlines = order.get_orderlines();
+
+        // Find the down payment lines that were just added and remove their taxes
+        for (let i = linesBefore; i < linesAfter; i++) {
+            let line = orderlines[i];
+            if (line.get_product().id === down_payment_product.id) {
+                const priceWithTax = line.get_price_with_tax();
+                line.tax_ids = [];
+                line.set_unit_price(priceWithTax);
+            }
+        }
+    }
+});