[FIX] delivery: package UOM

Since it is now possible to select the default UOM, do not hardcode `kg`
in the view.

opw-1920809

closes odoo/odoo#30427

addons/delivery/wizard/choose_delivery_package.py

@@ -21,6 +21,7 @@ class ChooseDeliveryPackage(models.TransientModel):
         string='Shipping Weight',
         default=lambda self: self._default_shipping_weight()
     )
+    weight_uom_name = fields.Char(string='Weight unit of measure label', compute='_compute_weight_uom_name')
 
     def _default_stock_quant_package_id(self):
         if self.env.context.get('default_stock_quant_package_id'):
@@ -45,6 +46,12 @@ class ChooseDeliveryPackage(models.TransientModel):
             total_weight = sum([po.qty_done * po.product_id.weight for po in move_line_ids])
             return total_weight
 
+    @api.depends('stock_quant_package_id', 'delivery_packaging_id')
+    def _compute_weight_uom_name(self):
+        weight_uom_id = self.env['product.template']._get_weight_uom_id_from_ir_config_parameter()
+        for package in self:
+            package.weight_uom_name = weight_uom_id.name
+
     @api.onchange('delivery_packaging_id', 'shipping_weight')
     def _onchange_packaging_weight(self):
         if self.delivery_packaging_id.max_weight and self.shipping_weight > self.delivery_packaging_id.max_weight:

addons/delivery/wizard/choose_delivery_package_views.xml

@@ -11,7 +11,7 @@
                     <label for="shipping_weight" attrs="{'invisible': [('delivery_packaging_id', '=', False)]}"/>
                     <div class="o_row" attrs="{'invisible': [('delivery_packaging_id', '=', False)]}">
                         <field name="shipping_weight"/>
-                        <span>kg</span>
+                        <field name="weight_uom_name"/>
                     </div>
                 </group>
                 <footer>