/**
* Generic method wrapping datatype's toString() method if implemented
* Checks if toString() is implemented in the field's datatype
* If not, data_text will be used by default
* @param eZContentObjectAttribute $attribute
* @return string
*/
public static function convertAttributeToString(eZContentObjectAttribute $attribute)
{
$datatype = $attribute->attribute('data_type_string');
$toStringImplemented = null;
$ret = null;
// First check if datatype is already known as implementing fromString() or not
// (Better performance as the check is made through Reflection API)
if (in_array($datatype, self::$datatypesToStringImpl)) {
$toStringImplemented = true;
} else {
if (in_array($datatype, self::$datatypesToStringNotImpl)) {
$toStringImplemented = false;
} else {
$reflector = new ReflectionObject($attribute->dataType());
$callerClass = $reflector->getMethod('toString')->class;
if ($callerClass == 'eZDataType') {
self::$datatypesToStringNotImpl[] = $datatype;
$toStringImplemented = false;
} else {
self::$datatypesToStringImpl[] = $datatype;
$toStringImplemented = true;
}
}
}
// Now insert data through the appropriate way
if ($toStringImplemented) {
$ret = $attribute->toString();
} else {
$ret = $attribute->attribute('data_text');
}
return $ret;
}
