Hello, dears i want to make records to be unique and I did it  by SQL constraints and it's worked well, and prevented me to make any duplication, 

now I need to make a more advanced method, that will check the name while creating the record and search overall records so if I found it, should return an action with form view of the original record id 

and here is what I had done.

    testt = fields.Text(string="", compute='open_duplicates', required=False, )
    @api.depends('name','id_num')
    def open_duplicates(self):
        duplicated = self.env['muk_dms.directory'].search([('name','=', self.name)])
        if duplicated:
            print('inn')
            return {
                'view_type': 'form',
                'view_mode': 'form',
                'res_model': 'muk_dms.	directory',
                'target': 'current',
                'res_id': duplicated.id,
                'type': 'ir.actions.act_window',
            }
        else:
            pass

now if I ityped a name which already exit the method runs and print the 'inn' but it is'nt return the action 

so how can I do that ??

any help will be appreciated !!