silverstripe-framework/forms/LookupField.php

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<?php
/**
* Read-only complement of {@link DropdownField}.
* Shows the "human value" of the dropdown field for the currently selected value.
* @package forms
* @subpackage fields-basic
*/
class LookupField extends DropdownField {
protected $readonly = true;
/**
* Returns a readonly span containing the correct value.
*/
function Field() {
if(trim($this->value) || $this->value === '0') {
$this->value = trim($this->value);
$source = $this->getSource();
if(is_array($source)) {
$mappedValue = isset($source[$this->value]) ? $source[$this->value] : null;
} elseif($source instanceof SQLMap) {
$mappedValue = $source->getItem($this->value);
}
}
if(!isset($mappedValue)) $mappedValue = $this->value ? $this->value : "<i>(none)</i>";
if($this->value) {
$val = $this->dontEscape ? $this->value : Convert::raw2xml($this->value);
} else {
$val = '<i>(none)</i>';
}
$valforInput = $this->value ? Convert::raw2att($val) : "";
return "<span class=\"readonly\" id=\"" . $this->id() .
"\">$mappedValue</span><input type=\"hidden\" name=\"" . $this->name .
"\" value=\"" . $valforInput . "\" />";
}
function performReadonlyTransformation() {
$clone = clone $this;
return $clone;
}
function Type() {
return "lookup readonly";
}
/**
* Override parent behaviour by not merging arrays.
*/
function getSource() {
return $this->source;
}
}
?>