[FIX] group intervention_type on sol

models/sale_intervention.py

@@ -939,13 +939,25 @@ class SaleIntervention(models.Model):
     # Business methods
     # ------------------------------------------------------
     def _update_order_lines(self):
-        product_tmpl = self.intervention_type_id
+        # group by intervention_type for current project
+        lines = self.read_group(
+            (("project_id", "=", self.project_id.id),),
+            ("price", "intervention_length", "plant_qty"),
+            "intervention_type_id",
+            lazy=False,
+        )
+        for line in lines:
+            product_tmpl_id = line["intervention_type_id"][0]
+            product_tmpl = self.env["product.template"].browse(product_tmpl_id)
             quantity = (
-            self.intervention_length if product_tmpl.uom_name == "m" else self.plant_qty
+                line["intervention_length"]
+                if product_tmpl.uom_name == "m"
+                else line["plant_qty"]
             )
+            data = {}
             if quantity != 0:
                 data = {
-                "price_unit": self.price / quantity,
+                    "price_unit": line["price"] / quantity,
                     "product_uom_qty": quantity,
                 }
                 existing_lines = self.sale_order_id.order_line.filtered(