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 $readonly = true;
/**
* Returns a readonly span containing the correct value.
*/
public function Field($properties = array()) {
$source = $this->getSource();
// Normalize value to array to simplify further processing
$values = (is_array($this->value) || is_object($this->value)) ? $this->value : array(trim($this->value));
$mapped = array();
if($source instanceof SQLMap) {
foreach($values as $value) $mapped[] = $source->getItem($value);
} else if($source instanceof ArrayAccess || is_array($source)) {
foreach($values as $value) {
if(isset($source[$value])) $mapped[] = $source[$value];
}
} else {
$mapped = array();
}
// Don't check if string arguments are matching against the source,
// as they might be generated HTML diff views instead of the actual values
if($this->value && !$mapped) {
$mapped = array(trim($this->value));
$values = array();
}
if($mapped) {
$attrValue = implode(', ', array_values($mapped));
if(!$this->dontEscape) $attrValue = Convert::raw2xml($attrValue);
$inputValue = implode(', ', array_values($values));
} else {
$attrValue = "<i>(none)</i>";
$inputValue = '';
}
return "<span class=\"readonly\" id=\"" . $this->id() .
"\">$attrValue</span><input type=\"hidden\" name=\"" . $this->name .
"\" value=\"" . $inputValue . "\" />";
}
public function performReadonlyTransformation() {
$clone = clone $this;
return $clone;
}
public function Type() {
return "lookup readonly";
}
/**
* Override parent behaviour by not merging arrays.
*/
public function getSource() {
return $this->source;
}
}