form/messages

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return function () {
    return form((array) $_POST + (array) $a)
        ->validate(['name' => 'trim|required'])
        ->on_after_render(function ($e, $r, $_this) {
            if ($_this->_validate_ok) {
                common()->message_success('ok');
                common()->message_warning('warn');
                common()->message_error('error');
                common()->message_info('info');
                $_this->_rendered = '';
            }
        })
        ->text('name')
        ->save();
};