Hello All,

i selected patient from   patient  and open patient form  , And above the patient form i add a button for this button wizard is opened and getting  appointment information .

I want that patient_id filed in   create appointment  wizard should be auto field when user open it

How can i  do this? 

##################### Code ####################

from odoo import models, fields, api

class CreateAppintment(models.TransientModel):

    _name = 'create.appointment'

    patient_id = fields.Many2one('clinic.patient', string='Patient')

    date_appointment = fields.Datetime('Date of Appointment')

    appointment_type = fields.Selection([('type1', 'Medical consultation'), ('type2', 'Check Up')],

                                        string="Appointment Type",

                                        help="To Detect The Type Of Appointment")

    appointment_status = fields.Selection(

        [('Pending', 'Pending'), ('Comfirmed', 'Comfirmed'), ('Done', 'Done'), ('Canceled', 'Canceled')], String="Status",

        readonly=True, default='Pending')

    doctor_id = fields.Many2one('hr.employee', string='Doctor',

                                domain="[('department_id.name', '=', 'Doctors')]")

    notes = fields.Html('Notes')

    def default_get(self):

        pass

        # Create Appointment

    def create_appointment(self):

        vals = {

            'patient_id': self.patient_id.id,

            'doctor_id': self.doctor_id.id,

            'date_appointment': self.date_appointment,

            'appointment_type': self.appointment_type,

            'appointment_status': self.appointment_status,

            'notes': self.notes

        }

        # adding a message to the Chatter from code

        self.patient_id.message_post(body='Test String', subject="Appointment Creation")

        # creating appointments from the code

        self.env['clinic.appointment'].create(vals)