old_contents: # -*- coding: utf-8 -*-
  # Part of Odoo. See LICENSE file for full copyright and licensing details.
  
  from odoo import api, models
  
  from odoo.addons.calendar.models.calendar import get_real_ids
  
  
  class Message(models.Model):
  
      _inherit = "mail.message"
  
      @api.model
      def search(self, args, offset=0, limit=0, order=None, count=False):
          """ Convert the search on real ids in the case it was asked on virtual ids, then call super() """
          args = list(args)
          for index in range(len(args)):
              if args[index][0] == "res_id":
                  if isinstance(args[index][2], basestring):
                      args[index] = (args[index][0], args[index][1], get_real_ids(args[index][2]))
                  elif isinstance(args[index][2], list):
                      args[index] = (args[index][0], args[index][1], map(lambda x: get_real_ids(x), args[index][2]))
          return super(Message, self).search(args, offset=offset, limit=limit, order=order, count=count)
  
      @api.model
      def _find_allowed_model_wise(self, doc_model, doc_dict):
          if doc_model == 'calendar.event':
              order = self._context.get('order', self._order)
              for virtual_id in self.env[doc_model].get_recurrent_ids(doc_dict.keys(), [], order=order):
                  doc_dict.setdefault(virtual_id, doc_dict[get_real_ids(virtual_id)])
          return super(Message, self)._find_allowed_model_wise(doc_model, doc_dict)
  
new_contents: # -*- coding: utf-8 -*-
  # Part of Odoo. See LICENSE file for full copyright and licensing details.
  
  from odoo import api, models
  
  from odoo.addons.calendar.models.calendar import get_real_ids
  
  
  class Message(models.Model):
  
      _inherit = "mail.message"
  
      @api.model
      def search(self, args, offset=0, limit=0, order=None, count=False):
          """ Convert the search on real ids in the case it was asked on virtual ids, then call super() """
          args = list(args)
          for index in range(len(args)):
              if args[index][0] == "res_id":
                  if isinstance(args[index][2], basestring):
                      args[index] = (args[index][0], args[index][1], get_real_ids(args[index][2]))
                  elif isinstance(args[index][2], list):
                      args[index] = (args[index][0], args[index][1], map(lambda x: get_real_ids(x), args[index][2]))
          return super(Message, self).search(args, offset=offset, limit=limit, order=order, count=count)
  
      @api.model
      def _find_allowed_model_wise(self, doc_model, doc_dict):
          if doc_model == 'calendar.event':
              order = self._context.get('order', self._order)
              for virtual_id in self.env[doc_model].browse(doc_dict.keys()).get_recurrent_ids([], order=order):
                  doc_dict.setdefault(virtual_id, doc_dict[get_real_ids(virtual_id)])
          return super(Message, self)._find_allowed_model_wise(doc_model, doc_dict)
  
subject: fix call to get_recurrent_ids broken when migrating