silverstripe-framework/Forms/TreeMultiselectField_Readonly.php

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<?php
namespace SilverStripe\Forms;
class TreeMultiselectField_Readonly extends TreeMultiselectField
{
protected $readonly = true;
public function Field($properties = array())
{
$titleArray = $itemIDs = array();
$titleList = $itemIDsList = "";
if ($items = $this->getItems()) {
foreach ($items as $item) {
$titleArray[] = $item->Title;
}
foreach ($items as $item) {
$itemIDs[] = $item->ID;
}
if ($titleArray) {
$titleList = implode(", ", $titleArray);
}
if ($itemIDs) {
$itemIDsList = implode(",", $itemIDs);
}
}
$field = new ReadonlyField($this->name . '_ReadonlyValue', $this->title);
$field->setValue($titleList);
$field->setForm($this->form);
$valueField = new HiddenField($this->name);
$valueField->setValue($itemIDsList);
$valueField->setForm($this->form);
return $field->Field() . $valueField->Field();
}
}