19.0 vanilla

odoo-bringout-oca-ocb-pos_hr/pos_hr/models/pos_payment.py

@@ -0,0 +1,15 @@
+from odoo import models, fields, api
+
+
+class PosPayment(models.Model):
+    _inherit = "pos.payment"
+
+    employee_id = fields.Many2one('hr.employee', string='Cashier', related='pos_order_id.employee_id', store=True, index=True)
+
+    @api.depends('employee_id', 'user_id')
+    def _compute_cashier(self):
+        for order in self:
+            if order.employee_id:
+                order.cashier = order.employee_id.name
+            else:
+                order.cashier = order.user_id.name