text: # -*- coding: utf-8 -*-
  
  from odoo import models, fields, api
  
  
  class RegistrationEditor(models.TransientModel):
      _name = "registration.editor"
      _description = 'Edit Attendee Details on Sales Confirmation'
  
      sale_order_id = fields.Many2one('sale.order', 'Sales Order', required=True, ondelete='cascade')
      event_registration_ids = fields.One2many('registration.editor.line', 'editor_id', string='Registrations to Edit')
  
      @api.model
      def default_get(self, fields):
          res = super(RegistrationEditor, self).default_get(fields)
          if not res.get('sale_order_id'):
              sale_order_id = res.get('sale_order_id', self._context.get('active_id'))
              res['sale_order_id'] = sale_order_id
          sale_order = self.env['sale.order'].browse(res.get('sale_order_id'))
          registrations = self.env['event.registration'].search([
              ('sale_order_id', '=', sale_order.id),
              ('event_ticket_id', 'in', sale_order.mapped('order_line.event_ticket_id').ids),
              ('state', '!=', 'cancel')])
  
          attendee_list = []
          for so_line in [l for l in sale_order.order_line if l.event_ticket_id]:
              existing_registrations = [r for r in registrations if r.event_ticket_id == so_line.event_ticket_id]
              for reg in existing_registrations:
                  attendee_list.append([0, 0, {
                      'event_id': reg.event_id.id,
                      'event_ticket_id': reg.event_ticket_id.id,
                      'registration_id': reg.id,
                      'name': reg.name,
                      'email': reg.email,
                      'phone': reg.phone,
                      'mobile': reg.mobile,
                      'sale_order_line_id': so_line.id,
                  }])
              for count in range(int(so_line.product_uom_qty) - len(existing_registrations)):
                  attendee_list.append([0, 0, {
                      'event_id': so_line.event_id.id,
                      'event_ticket_id': so_line.event_ticket_id.id,
                      'sale_order_line_id': so_line.id,
                      'name': so_line.order_partner_id.name,
                      'email': so_line.order_partner_id.email,
                      'phone': so_line.order_partner_id.phone,
                      'mobile': so_line.order_partner_id.mobile,
                  }])
          res['event_registration_ids'] = attendee_list
          res = self._convert_to_write(res)
          return res
  
      def action_make_registration(self):
          self.ensure_one()
          registrations_to_create = []
          for registration_line in self.event_registration_ids:
              values = registration_line.get_registration_data()
              if registration_line.registration_id:
                  registration_line.registration_id.write(values)
              else:
                  registrations_to_create.append(values)
  
          self.env['event.registration'].create(registrations_to_create)
          self.sale_order_id.order_line._update_registrations(confirm=self.sale_order_id.amount_total == 0)
  
          return {'type': 'ir.actions.act_window_close'}
  
  
  class RegistrationEditorLine(models.TransientModel):
      """Event Registration"""
      _name = "registration.editor.line"
      _description = 'Edit Attendee Line on Sales Confirmation'
      _order = "id desc"
  
      editor_id = fields.Many2one('registration.editor')
      sale_order_line_id = fields.Many2one('sale.order.line', string='Sales Order Line')
      event_id = fields.Many2one('event.event', string='Event', required=True)
      registration_id = fields.Many2one('event.registration', 'Original Registration')
      event_ticket_id = fields.Many2one('event.event.ticket', string='Event Ticket')
      email = fields.Char(string='Email')
      phone = fields.Char(string='Phone')
      mobile = fields.Char(string='Mobile')
      name = fields.Char(string='Name', index=True)
  
      def get_registration_data(self):
          self.ensure_one()
          return {
              'event_id': self.event_id.id,
              'event_ticket_id': self.event_ticket_id.id,
              'partner_id': self.editor_id.sale_order_id.partner_id.id,
              'name': self.name or self.editor_id.sale_order_id.partner_id.name,
              'phone': self.phone or self.editor_id.sale_order_id.partner_id.phone,
              'mobile': self.mobile or self.editor_id.sale_order_id.partner_id.mobile,
              'email': self.email or self.editor_id.sale_order_id.partner_id.email,
              'sale_order_id': self.editor_id.sale_order_id.id,
              'sale_order_line_id': self.sale_order_line_id.id,
          }
  