sale line price update

custom_addons/costing_mrp_bom/models/sale_order_line.py

@@ -97,5 +97,7 @@ class SaleOrderLine(models.Model):
     @api.depends('product_id', 'product_uom', 'product_uom_qty')
     def _compute_price_unit(self):
         for line in self:
+            if line.order_id and line.order_id.state == 'sale':
+                continue
             line.price_unit = 0.0