/**
* Custom request handler that will check component handlers before proceeding to the default
* implementation.
*
* @todo copy less code from RequestHandler.
*
* @param HTTPRequest $request
* @param DataModel $model
*
* @return array|RequestHandler|HTTPResponse|string|void
*
* @throws HTTPResponse_Exception
*/
public function handleRequest(HTTPRequest $request, DataModel $model)
{
if ($this->brokenOnConstruct) {
user_error(sprintf("parent::__construct() needs to be called on %s::__construct()", __CLASS__), E_USER_WARNING);
}
$this->setRequest($request);
$this->setDataModel($model);
$fieldData = $this->getRequest()->requestVar($this->getName());
/** @skipUpgrade */
if ($fieldData && isset($fieldData['GridState'])) {
$this->getState(false)->setValue($fieldData['GridState']);
}
foreach ($this->getComponents() as $component) {
if ($component instanceof GridField_URLHandler && ($urlHandlers = $component->getURLHandlers($this))) {
foreach ($urlHandlers as $rule => $action) {
if ($params = $request->match($rule, true)) {
// Actions can reference URL parameters.
// e.g. '$Action/$ID/$OtherID' → '$Action'
if ($action[0] == '$') {
$action = $params[substr($action, 1)];
}
if (!method_exists($component, 'checkAccessAction') || $component->checkAccessAction($action)) {
if (!$action) {
$action = "index";
}
if (!is_string($action)) {
throw new LogicException(sprintf('Non-string method name: %s', var_export($action, true)));
}
try {
$result = $component->{$action}($this, $request);
} catch (HTTPResponse_Exception $responseException) {
$result = $responseException->getResponse();
}
if ($result instanceof HTTPResponse && $result->isError()) {
return $result;
}
if ($this !== $result && !$request->isEmptyPattern($rule) && is_object($result) && $result instanceof RequestHandler) {
$returnValue = $result->handleRequest($request, $model);
if (is_array($returnValue)) {
throw new LogicException('GridField_URLHandler handlers can\'t return arrays');
}
return $returnValue;
}
if ($request->allParsed()) {
return $result;
}
return $this->httpError(404, sprintf('I can\'t handle sub-URLs of a %s object.', get_class($result)));
}
}
}
}
}
return parent::handleRequest($request, $model);
}