[IMP] stock_account: product_id in standard price update's accounting moves

When updating the cost on products with realtime valuation, the journal
entries do not have their product_id set, whcih make it difficult to
track/filter on them.

Closes #18492
Closes #22281
Task 60955

addons/stock_account/models/product.py

@@ -143,16 +143,19 @@ class ProductProduct(models.Model):
                     move_vals = {
                         'journal_id': product_accounts[product.id]['stock_journal'].id,
                         'company_id': location.company_id.id,
+                        'ref': product.default_code,
                         'line_ids': [(0, 0, {
                             'name': _('Standard Price changed  - %s') % (product.display_name),
                             'account_id': debit_account_id,
                             'debit': abs(diff * qty_available),
                             'credit': 0,
+                            'product_id': product.id,
                         }), (0, 0, {
                             'name': _('Standard Price changed  - %s') % (product.display_name),
                             'account_id': credit_account_id,
                             'debit': 0,
                             'credit': abs(diff * qty_available),
+                            'product_id': product.id,
                         })],
                     }
                     move = AccountMove.create(move_vals)

addons/stock_account/tests/test_stockvaluation.py

@@ -17,6 +17,7 @@ class TestStockValuation(TransactionCase):
         self.product1 = self.env['product.product'].create({
             'name': 'Product A',
             'type': 'product',
+            'default_code': 'prda',
             'categ_id': self.env.ref('product.product_category_all').id,
         })
         self.product2 = self.env['product.product'].create({
@@ -43,6 +44,11 @@ class TestStockValuation(TransactionCase):
             'code': 'Stock Valuation',
             'user_type_id': self.env.ref('account.data_account_type_current_assets').id,
         })
+        self.expense_account = Account.create({
+            'name': 'Expense Account',
+            'code': 'Expense Account',
+            'user_type_id': self.env.ref('account.data_account_type_expenses').id,
+        })
         self.stock_journal = self.env['account.journal'].create({
             'name': 'Stock Journal',
             'code': 'STJTEST',
@@ -76,6 +82,33 @@ class TestStockValuation(TransactionCase):
             ('account_id', '=', self.stock_valuation_account.id),
         ], order='date, id')
 
+    def test_realtime(self):
+        """ Stock moves update stock value with product x cost price,
+        price change updates the stock value based on current stock level.
+        """
+        # Enter 10 products while price is 5.0
+        self.product1.standard_price = 5.0
+        move1 = self.env['stock.move'].create({
+            'name': 'IN 10 units @ 10.00 per unit',
+            'location_id': self.supplier_location.id,
+            'location_dest_id': self.stock_location.id,
+            'product_id': self.product1.id,
+            'product_uom': self.uom_unit.id,
+            'product_uom_qty': 10.0,
+        })
+        move1._action_confirm()
+        move1._action_assign()
+        move1.move_line_ids.qty_done = 10.0
+        move1._action_done()
+
+        # Set price to 6.0
+        self.product1.do_change_standard_price(6.0, self.expense_account.id)
+        stock_aml, price_change_aml = self._get_stock_valuation_move_lines()
+        self.assertEqual(stock_aml.debit, 50)
+        self.assertEqual(price_change_aml.debit, 10)
+        self.assertEqual(price_change_aml.ref, 'prda')
+        self.assertEqual(price_change_aml.product_id, self.product1)
+
     def test_fifo_perpetual_1(self):
         self.product1.product_tmpl_id.cost_method = 'fifo'