fix billed amount

odex25_purchase/purchase_requisition_custom/models/purchase_order.py

@@ -8,6 +8,23 @@ from dateutil.relativedelta import relativedelta
 class PurchaseOrderCustom(models.Model):
     _inherit = "purchase.order"
 
+    billed_amount = fields.Float(store=True, compute='_compute_amount')
+    remaining_amount = fields.Float(store=True, compute='_compute_amount')
+
+    @api.depends('invoice_ids','invoice_count')
+    def _compute_amount(self):
+        for order in self:
+            billed_amount = 0.0
+            for invoice in order.invoice_ids:
+                billed_amount += invoice.amount_total
+
+            currency = order.currency_id or order.partner_id.property_purchase_currency_id or \
+                self.env.company.currency_id
+            order.update({
+                'billed_amount': currency.round(billed_amount),
+                'remaining_amount': order.amount_total - billed_amount,
+            })
+
     def copy(self, default=None):
         data = super(PurchaseOrderCustom, self).copy(default)
         data.email_to_vendor = False