I have tree models and i want to overwrite create function of calendar.event models to get in the patners_ids field, who is patient and append it on the medical.appointment model on create. 

Here a part of code : 

Class MedicalAppointment(models.Model):
    _name = "medical.appointment"
    patient =  fields.Many2one ('medical.patient', 'Patient', readonly=True, states={'draft': [('readonly', False)]}, help="Patient Name", required=True,)
    
class MedicalPatient(models.Model):
    _name = "medical.patient"    
    name = fields.Many2one('res.partner', 'Patient', required="1", track_visibility='onchange', domain=[('is_patient', '=', True), ('is_person', '=', True)], help="Patient Name")
    @api.multi
    @api.depends('name', 'patient_id')
    def name_get(self):
        result = []
        for partner in self:
            name = partner.name.name
            if partner.patient_id:
                name = '[' + partner.patient_id + ']' + name
            result.append((partner.id, name))
        return result
    
    @api.model
    def name_search(self, name, args=None, operator='ilike', limit=100):
        args = args or []
        recs = self.browse()
        # if name:
            # recs = self.search(['|', '|', '|', '|', '|', ('name', operator , name), ('patient_id', operator , name), ('mobile', operator , name), ('other_mobile', operator , name), ('lastname', operator , name), ('middle_name', operator , name) ] )
        if not recs:
            recs = self.search([('name', operator, name)])
        return recs.name_get()
class Meeting(models.Model):
    _name = 'calendar.event'
    partner_ids = fields.Many2many('res.partner', 'calendar_event_res_partner_rel', string='Attendees', states={'done': [('readonly', True)]}, default=_default_partners)    

I write this code but it is not working well : 

class Meeting(models.Model):
    _name = 'calendar.event'
    _inherit = ["calendar.event"]
    @api.model
    def create(self, values):
        if not 'user_id' in values:  # Else bug with quick_create when we are filter on an other user
            values['user_id'] = self.env.user.id
        # compute duration, if not given
        if not 'duration' in values:
            values['duration'] = self._get_duration(values['start'], values['stop'])
        meeting = super(Meeting, self).create(values)
        final_date = meeting._get_recurrency_end_date()
        # `dont_notify=True` in context to prevent multiple notify_next_alarm
        meeting.with_context(dont_notify=True).write({'final_date': final_date})
        meeting.with_context(dont_notify=True).create_attendees()
        # Notify attendees if there is an alarm on the created event, as it might have changed their
        # next event notification
        if not self._context.get('dont_notify'):
            if len(meeting.alarm_ids) > 0:
                self.env['calendar.alarm_manager'].notify_next_alarm(meeting.partner_ids.ids)
        if meeting.partner_ids:            
            patients = meeting.partner_ids.search([('is_patient', '=', True)])
            patient = patients[0]
            pat_name = patient.name
            patient_obj = self.env['medical.patient']
            current_patient = patient_obj.search(pat_name)
        if meeting.start:
            self.env['medical.appointment'].create({'patient': current_patient})
        return meeting

I need a help