/**
* Returns the class name in the class hierarchy which contains a given
* field column for a {@link DataObject}. If the field does not exist, this
* will return null.
*
* @param string $candidateClass
* @param string $fieldName
* @return string
*/
public function classForField($candidateClass, $fieldName)
{
// normalise class name
$candidateClass = ClassInfo::class_name($candidateClass);
if ($candidateClass === DataObject::class) {
return null;
}
// Short circuit for fixed fields
$fixed = DataObject::config()->get('fixed_fields');
if (isset($fixed[$fieldName])) {
return $this->baseDataClass($candidateClass);
}
// Find regular field
while ($candidateClass) {
$fields = $this->databaseFields($candidateClass, false);
if (isset($fields[$fieldName])) {
return $candidateClass;
}
$candidateClass = get_parent_class($candidateClass);
}
return null;
}
/**
* Safely get a DataObject from a client-supplied ID and ClassName, checking: argument
* validity; existence; and canView permissions.
*
* @param int $id The ID of the DataObject
* @param string $class The Class of the DataObject
* @return DataObject The referenced DataObject
* @throws HTTPResponse_Exception
*/
protected function getObject($id, $class)
{
$id = (int) $id;
$class = ClassInfo::class_name($class);
if (!$class || !is_subclass_of($class, 'SilverStripe\\ORM\\DataObject') || !Object::has_extension($class, 'SilverStripe\\ORM\\Versioning\\Versioned')) {
$this->controller->httpError(400, _t('AddToCampaign.ErrorGeneral', 'We apologise, but there was an error'));
return null;
}
$object = DataObject::get($class)->byID($id);
if (!$object) {
$this->controller->httpError(404, _t('AddToCampaign.ErrorNotFound', 'That {Type} couldn\'t be found', '', ['Type' => $class]));
return null;
}
if (!$object->canView()) {
$this->controller->httpError(403, _t('AddToCampaign.ErrorItemPermissionDenied', 'It seems you don\'t have the necessary permissions to add {ObjectTitle} to a campaign', '', ['ObjectTitle' => $object->Title]));
return null;
}
return $object;
}
public function testNonClassName()
{
$this->setExpectedException('ReflectionException', 'Class IAmAClassThatDoesNotExist does not exist');
$this->assertEquals('IAmAClassThatDoesNotExist', ClassInfo::class_name('IAmAClassThatDoesNotExist'));
}
