[FIX] delivery: handle multiple references in delivery email

Steps to reproduce:
- install sales and easypost shipping
- have a delivery order of multiple packages with easypost
- click "send confirmation email"

previous behavior:
the template does not handle multiple package references
and the associated link is wrong

current behavior:
each reference is set in a separated link

opw-2167037

closes odoo/odoo#45507

X-original-commit: 65eaa3e7daf0b547ae2bb98e335fc5941cb200a6
Signed-off-by: mightyjol <jhk-odoo@users.noreply.github.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/addons/delivery/models/stock_picking.py b/addons/delivery/models/stock_picking.py
index 199f2fa9695..ba2f6c18553 100644
--- a/addons/delivery/models/stock_picking.py
+++ b/addons/delivery/models/stock_picking.py
@@ -109,6 +109,13 @@ class StockPicking(models.Model):
             else:
                 picking.return_label_ids = False
 
+    def get_multiple_carrier_tracking(self):
+        self.ensure_one()
+        try:
+            return json.loads(self.carrier_tracking_url)
+        except ValueError:
+            return False
+
     @api.depends('move_lines')
     def _cal_weight(self):
         for picking in self: