Controller and model

abc_region.php

<?php
class Abc_Region extends Db_ActiveRecord
{
	public $table_name = 'abc_regions';
	public $has_many = array(
		'countries'=>array('class_name'=>'Shop_Country', 'foreign_key'=>'abc_region_id')
	);
	
	public function define_columns($context = null)
	{
		$this->define_column('id', '#')->invisible();
		$this->define_column('name', 'Name')->validation()->fn('trim')->required();
		$this->define_multi_relation_column('countries', 'countries', 'Countries', '@name')->validation()->required();
	}
	
	public function define_form_fields($context = null)
	{
		$this->add_form_field('name');
		$this->add_form_field('countries');	
	}
	
	public static function create()
	{
		return new self();
	}
}
?>

abc_regions.php

<?php
class Abc_Regions extends Backend_Controller
{
	public $uri = '/abc/regions';
	public $implement = 'Db_ListBehavior, Db_FormBehavior';
	public $model = 'Abc_Region';
	
	/*=== Db_ListBehavior ===*/
	public $list_model_class = null;	
	public $list_search_enabled = true;
	public $list_search_fields = array('@name');
	public $list_search_prompt = 'find region';
	public $list_record_url = null;
	public $list_custom_body_cells = null;
	public $list_custom_head_cells = null;
	public $list_top_partial = null;
	
	/*=== Db_FormBehavior ===*/
	public $form_model_class = null;
	public $form_redirect = null;
	public $form_create_title = 'New Region';
	public $form_edit_title = 'Edit Region';
	public $form_not_found_message = 'Region not found';
	
	public function __construct()
	{
		parent::__construct();
		$this->app_module_name = 'Abc';
		$this->app_tab = 'abc';
		$this->app_page = 'regions';
		
		$this->form_redirect = $this->url();
		$this->list_record_url = $this->url("/edit/");
		$this->list_model_class = $this->form_model_class = $this->model;
	}
	
	public function index() {
		$this->app_page_title = 'Regions';
	}
	
	protected function url($slug = "")
	{
		return url($this->uri . $slug);
	}

	protected function evalTotal()
	{
		return Abc_Region::create()->requestRowCount();
	}
}
?>