Hello, I am a new programmer to odoo and in my search i didn't find an answer to my problem.

def leave_filter_act(self):
    print("Hello Odooo")

    return {

        'name': _("Partner Report"),
        'type': 'ir.actions.act_window',
        'res_model': 'account.report.standard.ledger',
        'view_type': 'form',
        'view_mode': 'form',
        'target': 'current',
    }

I return that field to XML.

 ledger_type = fields.Selection(
        [('partner', 'Partner Ledger'),],
        string='Type', default='partner', required=True,
        help=' * Partner Ledger : Journal entries group by account\n')

How is it possible.