old_contents: # -*- coding: utf-8 -*-
  ##############################################################################
  #
  #    OpenERP, Open Source Management Solution
  #    Copyright (C) 2010-Today OpenERP SA (<http://www.openerp.com>)
  #
  #    This program is free software: you can redistribute it and/or modify
  #    it under the terms of the GNU General Public License as published by
  #    the Free Software Foundation, either version 3 of the License, or
  #    (at your option) any later version.
  #
  #    This program is distributed in the hope that it will be useful,
  #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  #    GNU General Public License for more details.
  #
  #    You should have received a copy of the GNU General Public License
  #    along with this program.  If not, see <http://www.gnu.org/licenses/>
  #
  ##############################################################################
  
  from openerp.osv import osv
  
  
  class mail_message(osv.Model):
      """ Messages model: system notification (replacing res.log notifications),
          comments (OpenChatter discussion) and incoming emails. """
      _name = 'mail.message'
      _inherit = 'mail.message'
  
      def check_related_document(self, cr, uid, model_obj, mids, operation, context=None):
          """If the user posting the message to an employee  is an employee, only
          the read access are checked"""
  
          if model_obj._name == 'hr.employee':
              employee_ids = model_obj.search(cr, uid, [('user_id', '=', uid)], context=context)
              if len(employee_ids) > 0:
                  model_obj.check_access_rights(cr, uid, 'read')
                  model_obj.check_access_rule(cr, uid, mids, 'read', context=context)
                  return
  
          super(mail_message, self).check_related_document(cr, uid, uid, model_obj, mids, operation, context)
  
new_contents: # -*- coding: utf-8 -*-
  ##############################################################################
  #
  #    OpenERP, Open Source Management Solution
  #    Copyright (C) 2010-Today OpenERP SA (<http://www.openerp.com>)
  #
  #    This program is free software: you can redistribute it and/or modify
  #    it under the terms of the GNU General Public License as published by
  #    the Free Software Foundation, either version 3 of the License, or
  #    (at your option) any later version.
  #
  #    This program is distributed in the hope that it will be useful,
  #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  #    GNU General Public License for more details.
  #
  #    You should have received a copy of the GNU General Public License
  #    along with this program.  If not, see <http://www.gnu.org/licenses/>
  #
  ##############################################################################
  
  from openerp.osv import osv
  
  
  class mail_message(osv.Model):
      """ Messages model: system notification (replacing res.log notifications),
          comments (OpenChatter discussion) and incoming emails. """
      _name = 'mail.message'
      _inherit = 'mail.message'
  
      def check_related_document(self, cr, uid, model_obj, mids, operation, context=None):
          """If the user posting the message to an employee  is an employee, only
          the read access are checked"""
  
          if model_obj._name == 'hr.employee':
              employee_ids = model_obj.search(cr, uid, [('user_id', '=', uid)], context=context)
              if len(employee_ids) > 0:
                  model_obj.check_access_rights(cr, uid, 'read')
                  model_obj.check_access_rule(cr, uid, mids, 'read', context=context)
                  return
  
          super(mail_message, self).check_related_document(cr, uid, model_obj, mids, operation, context)
  
subject: correct arguments method