silverstripe-framework/Security/PermissionCheckboxSetField_Readonly.php

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<?php
namespace SilverStripe\Security;
use SilverStripe\ORM\DataObjectInterface;
/**
* Readonly version of a {@link PermissionCheckboxSetField} -
* uses the same structure, but has all checkboxes disabled.
*/
class PermissionCheckboxSetField_Readonly extends PermissionCheckboxSetField
{
protected $readonly = true;
public function saveInto(DataObjectInterface $record)
{
return false;
}
}