Atk4 Agile UI - Custom CRUD form

myCrud.php

<?php
// RUNNABLE IN atk/demos DIR (VERSION 2.0.4)
// https://github.com/atk4/ui/issues/1081

require 'init.php';
require 'database.php';

class MyForm extends \atk4\ui\Form {
    function setModel($m, $fields = null) {
        parent::setModel($m, false);
        
        $cols_layout = $this->layout->addSubLayout('Columns');
        $c1 = $cols_layout->addColumn();
        $c1->addField('name');
        $c2 = $cols_layout->addColumn();
        $c2->addField('iso');

        $this->addField('numcode');

        return $this->model;
    }
}

class MyExecutor extends atk4\ui\ActionExecutor\UserAction {
    public $form = '\\'.MyForm::class;
}

$m = new Country($db);

// SINGLE OPERATION OPTION
$m->getAction('edit')->ui['executor'] = MyExecutor::class;
$crud = $app->add(['CRUD']);

// GENERIC OPERATION OPTION
//$crud = $app->add(['CRUD', 'executor' => MyExecutor::class]);

$crud->setModel($m);

?>