transform(new MyTransformation());
* @package forms
* @subpackage transformations
*/
class FormTransformation extends Object {
public function transform(FormField $field) {
// Look for a performXXTransformation() method on the field itself.
// performReadonlyTransformation() is a pretty commonly applied method.
// Otherwise, look for a transformXXXField() method on this object.
// This is more commonly done in custom transformations
// We iterate through each array simultaneously, looking at [0] of both, then [1] of both.
// This provides a more natural failover scheme.
$transNames = array_reverse(array_values(ClassInfo::ancestry($this->class)));
$fieldClasses = array_reverse(array_values(ClassInfo::ancestry($field->class)));
$len = max(sizeof($transNames), sizeof($fieldClasses));
for($i=0;$i<$len;$i++) {
// This is lets fieldClasses be longer than transNames
if($transName = $transNames[$i]) {
if($field->hasMethod('perform' . $transName)) {
$funcName = 'perform' . $transName;
//echo "$field->class used $funcName";
return $field->$funcName($this);
}
}
// And this one does the reverse.
if($fieldClass = $fieldClasses[$i]) {
if($this->hasMethod('transform' . $fieldClass)) {
$funcName = 'transform' . $fieldClass;
//echo "$field->class used $funcName";
return $this->$funcName($field);
}
}
}
user_error("FormTransformation:: Can't perform '$this->class' on '$field->class'", E_USER_ERROR);
}
}