[fix] error with read_group

models/sale_intervention.py

@@ -11,7 +11,6 @@ class SaleIntervention(models.Model):
         """
         Rewrite function to use Taxes
         """
-        product_tmpl = self.intervention_type_id
         plant_categ_id = self.env.ref("ap_sale_project.product_category_plant")
         vat_plant_categ = (
             self.env["product.category"].browse(plant_categ_id.id).taxes_id
@@ -22,28 +21,30 @@ class SaleIntervention(models.Model):
         vat_furniture_categ = (
             self.env["product.category"].browse(furniture_categ_id.id).taxes_id
         )
+        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)
             pricelist = self.project_subvention_id.product_pricelist_ids.filtered(
-            lambda i: i.intervention_type_id.id == product_tmpl.id
+                lambda i: i.intervention_type_id.id == product_tmpl_id
             )
             if (
                 pricelist
                 and pricelist.item_ids.filtered(lambda i: i.categ_id == plant_categ_id)
                 and self.env.user.company_id.vat
             ):
-            interventions = self.project_id.intervention_ids.filtered(
-                lambda i: i.intervention_type_id == self.intervention_type_id
-            )
-            quantity = 0
-            price = 0
-            for inter in interventions:
-                quantity += (
-                    inter.intervention_length
+                quantity = (
+                    line["intervention_length"]
                     if product_tmpl.uom_name == "m"
-                    else inter.plant_qty
+                    else line["plant_qty"]
                 )
-                price += inter.price
                 if quantity != 0:
-                price_unit = price / quantity
+                    price_unit = line["price"] / quantity
                     plant_pricelist_item = pricelist.item_ids.filtered(
                         lambda i: i.categ_id == plant_categ_id
                     )