Hello Community,

I have a question as a beginner using Odoo.  Suppose one is making a hospital system model on Odoo , then created a patient model and an appointment model. Now if someone created an appointment from appointment home page it should be a wizard message with info to create an appointment date with the patient's name field manually to be entered, but if someone entered through patient home page, I want the patient name to be filled automatically from the entered patient record to the appointment's patient field. 

I tried with a code like this

class CreateAppointmentWizard(models.TransientModel):

    _name = "create.appointment.wizard"
    _inherit=["hospital.patient"]
    _description = "Appointment Wizard"

    name = fields.Char(string='Name', required=True)
    patient_id = fields.Many2one('hospital.patient', string="Patient")

def action_create_appointment(self):
    if self.env['hospital.patient']: // patient model
        self.patient_id = self.env['hospital.patient'].patient_id
    else:
        self.patient_id = ''

I need a help in this if it is possible

Thank you