clinic/netforce_clinic/models/shop_payment.py

from netforce.model import Model, fields

class ShopPayment(Model):
    _name="clinic.shop.payment"
    _transient=True

    _fields={
        'shop_id': fields.Many2One("clinic.shop","Shop",on_delete="cascade"),
        'payment_id': fields.Many2One("account.payment","Payment",on_delete="cascade"),
        'account_id': fields.Many2One("account.account","Account"),
        'amount': fields.Float("Amount"),
    }

    _defaults={
        'amount': 0.0,
    }

ShopPayment.register()