@classmethod
    def read(cls, ids, fields_names=None):
        results = super(Suppliers, cls).read(ids, fields_names=fields_names)
        user_pool = Pool().get('res.user')
        if 'users' in fields_names:
            for result in results:
                with Transaction().set_context(active_test=False):
                    users = user_pool.search([('supplier', '=', result['id'])])
                    result['users'] = [x.id for x in users]
        return results