hi

in CMS i have

static $has_many = array(
	'WyroznioneProdukty' => 'SiteTree'
);
...

function getCMSFields() {
$fields = parent::getCMSFields();

$KrakowProduktList = DataObject::get('KrakowProdukt');
$fields->addFieldToTab("Root.Content.WyroznijNaStronieKategorii",new CheckboxSetField('WyroznioneProdukty','Select all related pages to appear in the main page', $KrakowProduktList)); 		

return $fields;
}

now how to display checked elements in CheckboxSetField in templetes ?

i tried to

<% control WyroznioneProdukty %>
<p>$Title</p>
<% end_control %> 		

but it displays all elements which are in the CheckboxSetField (checked and unchecked)

The has_many should only return the saved options. Do you have a has one relationship on the other side? (Has many must has a related has one).

this is all my code

<?php
 
class Krakow extends SiteTree {

	static $db = array(
		'SG1Brak' => "Boolean",
		'SG2Brak' => "Boolean",
		'SG3Brak' => "Boolean"	
	);
	
	static $has_one = array(
		'SG1' => 'SiteTree',
		'SG2' => 'SiteTree',
		'SG3' => 'SiteTree',
		'StronaGlowna' => 'StronaGlowna'
	);
	
	static $has_many = array(

		'WyroznioneProdukty' => 'SiteTree'
	);
	
	static $allowed_children = array('KrakowProdukt');

	function getCMSFields() {
		$fields = parent::getCMSFields();		

		$KrakowProduktList = DataObject::get('KrakowProdukt');

		
		$fields->addFieldToTab("Root.Content.PromujNaStronieGlownej", new TreeDropdownField('SG1ID','Produkt pierwszy:','SiteTree')); 
		$fields->addFieldToTab("Root.Content.PromujNaStronieGlownej", new CheckboxField('SG1Brak','Wyświetl ten element'));
		$fields->addFieldToTab("Root.Content.PromujNaStronieGlownej", new TreeDropdownField('SG2ID','Produkt drugi:','SiteTree'));
		$fields->addFieldToTab("Root.Content.PromujNaStronieGlownej", new CheckboxField('SG2Brak','Wyświetl ten element')); 
		$fields->addFieldToTab("Root.Content.PromujNaStronieGlownej", new TreeDropdownField('SG3ID','Produkt trzeci:','SiteTree'));
		$fields->addFieldToTab("Root.Content.PromujNaStronieGlownej", new CheckboxField('SG3Brak','Wyświetl ten element')); 	

		$fields->addFieldToTab("Root.Content.WyroznijNaStronieKategorii",new CheckboxSetField('WyroznioneProdukty','Select all related pages to appear in the right column', $KrakowProduktList)); 		

		
		return $fields;
	}

}
 
class Krakow_Controller extends Strona_Controller { 

 
} 
?>