from odoo import fields, models class McEnrollment(models.Model): _inherit = "mc.enrollment" invoice_ids = fields.One2many("account.move", "mc_enrollment_id", string="Invoices") def action_open_fee_invoice_wizard(self): self.ensure_one() return { "type": "ir.actions.act_window", "res_model": "mc.fee.invoice.generate.wizard", "view_mode": "form", "target": "new", "context": {"default_enrollment_id": self.id}, }