correct computation of lot relations in account_invoice.py

ext/custom-addons/dp_reports_account/models/account_invoice.py

@@ -48,6 +48,7 @@ class AccountInvoiceLine(models.Model):
     )
 
     lot_formatted_note = fields.Html(
+        comodel_name='stock.production.lot',
         string='Formatted Note',
         compute='_compute_line_lots',
     )
@@ -57,9 +58,8 @@ class AccountInvoiceLine(models.Model):
         for line in self:
             if not line.order_line_ids:
                 return
-            line.prod_lot_ids = self.mapped(
+            line.prod_lot_ids = line.mapped(
                 'order_line_ids.move_ids.move_line_ids.lot_id')
-        print('End')
 
     @api.multi
     def _compute_line_lots(self):