Hello,

I have models make appointment customer and choose appointment customer the first model has service_id and is_package I want to pass their value into the second wizard so I can create validation here is models 

def action_open_choose_appointment(self):
    choose_appointment = self.env['choose.appointment.customer'].create({
        'service_id': self.service_id.id if self.service_id else False,
        'is_package': self.is_package,
    })
    return {
        'type': 'ir.actions.act_window',
        'res_model': 'choose.appointment.customer',
        'res_id': choose_appointment.id,
        'view_mode': 'form',
        'target': 'new',
        'context': {
            'default_service_id': self.service_id.id if self.service_id else False,
            'is_package': self.is_package,
        },
    }

i use this function in the first model and here is the second model 

lass ChooseMembershipAppointment(models.TransientModel):

    _inherit = ["choose.appointment.customer"]
    _description = "Choose Membership for Customer"

    service_id = fields.Many2one('appointment.product', string="Service")
    # ('consumed_service_ids.service_id', '=', service_id)
    is_package = fields.Boolean(string="Package Selected", default=False)
    membership_id = fields.Many2one('customer.membership', string='Customer Membership',
                                    domain="[('partner_id', '=', partner_id),('status','=','active'),]")
    notes = fields.Text(string="Notes")
    membership_package = fields.Many2one(related='membership_id.membership_package_id')
    has_membership = fields.Boolean(string="Has Membership", compute='_compute_has_membership', store=False)

    def some_method(self):

        business_appointment = self.env['make.business.appointment'].create({})

        result = business_appointment.action_open_choose_appointment()

        return result


    @api.model
    def create(self, vals):

        print("Context: %s", self.env.context)
        service_id = self.env.context.get('default_service_id')
        is_package = self.env.context.get('is_package')
        if service_id:
            print("kkkkkkkkkkkkkk")
            vals['service_id'] = service_id
        if is_package:
            print("wooooooooooooooooooow")
            vals['is_package'] = is_package
        return super(ChooseMembershipAppointment, self).create(vals)


    def default_get(self, fields_list):
        res = super(ChooseMembershipAppointment, self).default_get(fields_list)

        res['is_package'] = self.env.context.get('default_package_selected', False)
        print("Context: %s", self.env.context)
        partner_id = self._context.get('partner_id')


        if partner_id:
            memberships = self.env['customer.membership'].search([
                ('partner_id', '=', partner_id),
                ('status', '=', 'active')
            ], order='date_from asc', limit=1)

            if memberships:
                res['membership_id'] = memberships.id


        return res