mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
6bd5da7e6e
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@60206 467b73ca-7a2a-4603-9d3b-597d59a354a9
448 lines
14 KiB
PHP
448 lines
14 KiB
PHP
<?php
|
|
/**
|
|
* Base controller class.
|
|
* Controllers are the cornerstone of all site functionality in Sapphire. The {@link Director}
|
|
* selects a controller to pass control to, and then calls {@link run()}. This method will execute
|
|
* the appropriate action - either by calling the action method, or displaying the action's template.
|
|
*
|
|
* See {@link getTemplate()} for information on how the template is chosen.
|
|
* @package sapphire
|
|
* @subpackage control
|
|
*/
|
|
class Controller extends RequestHandlingData {
|
|
/**
|
|
* An array of arguments extracted from the URL
|
|
*/
|
|
protected $urlParams;
|
|
protected $requestParams;
|
|
protected $action;
|
|
|
|
/**
|
|
* The {@link Session} object for this controller
|
|
*/
|
|
protected $session;
|
|
|
|
/**
|
|
* Stack of current controllers.
|
|
* Controller::$controller_stack[0] is the current controller.
|
|
*/
|
|
protected static $controller_stack = array();
|
|
|
|
protected $basicAuthEnabled = true;
|
|
|
|
/**
|
|
* The HTTPResponse object that the controller returns
|
|
*/
|
|
protected $response;
|
|
|
|
/**
|
|
* Default URL handlers - (Action)/(ID)/(OtherID)
|
|
*/
|
|
static $url_handlers = array(
|
|
'$Action//$ID/$OtherID' => 'handleAction',
|
|
);
|
|
|
|
static $allowed_actions = array(
|
|
'handleAction',
|
|
'handleIndex',
|
|
);
|
|
|
|
/**
|
|
* Handles HTTP requests.
|
|
* @param $request The {@link HTTPRequest} object that is responsible for distributing request parsing.
|
|
*/
|
|
function handleRequest($request) {
|
|
$this->pushCurrent();
|
|
$this->urlParams = $request->allParams();
|
|
$this->response = new HTTPResponse();
|
|
|
|
// Init
|
|
$this->baseInitCalled = false;
|
|
$this->init();
|
|
if(!$this->baseInitCalled) user_error("init() method on class '$this->class' doesn't call Controller::init(). Make sure that you have parent::init() included.", E_USER_WARNING);
|
|
|
|
// If we had a redirection or something, halt processing.
|
|
if($this->response->isFinished()) {
|
|
$this->popCurrent();
|
|
return $this->response;
|
|
}
|
|
|
|
$body = parent::handleRequest($request);
|
|
if($body instanceof HTTPResponse) {
|
|
$this->response = $body;
|
|
|
|
} else {
|
|
if(is_object($body)) $body = $body->getViewer($request->latestParam('Action'))->process($body);
|
|
$this->response->setBody($body);
|
|
}
|
|
|
|
|
|
ContentNegotiator::process($this->response);
|
|
HTTP::add_cache_headers($this->response);
|
|
|
|
$this->popCurrent();
|
|
return $this->response;
|
|
}
|
|
|
|
/**
|
|
* Controller's default action handler. It will call the method named in $Action, if that method exists.
|
|
* If $Action isn't given, it will use "index" as a default.
|
|
*/
|
|
function handleAction($request) {
|
|
// urlParams, requestParams, and action are set for backward compatability
|
|
$this->urlParams = array_merge($this->urlParams, $request->latestParams());
|
|
$this->action = str_replace("-","_",$request->param('Action'));
|
|
$this->requestParams = $request->requestVars();
|
|
if(!$this->action) $this->action = 'index';
|
|
$methodName = $this->action;
|
|
|
|
// run & init are manually disabled, because they create infinite loops and other dodgy situations
|
|
if(!$this->checkAccessAction($this->action) || in_array(strtolower($this->action), array('run', 'init'))) {
|
|
if($this->hasMethod($methodName)) {
|
|
$result = $this->$methodName($request);
|
|
|
|
// Method returns an array, that is used to customise the object before rendering with a template
|
|
if(is_array($result)) {
|
|
return $this->getViewer($this->action)->process($this->customise($result));
|
|
|
|
// Method returns a string / object, in which case we just return that
|
|
} else {
|
|
return $result;
|
|
}
|
|
|
|
// There is no method, in which case we just render this object using a (possibly alternate) template
|
|
} else {
|
|
return $this->getViewer($this->action)->process($this);
|
|
}
|
|
} else {
|
|
return $this->httpError(403, "Action '$this->action' isn't allowed on class $this->class");
|
|
}
|
|
}
|
|
|
|
function setURLParams($urlParams) {
|
|
$this->urlParams = $urlParams;
|
|
}
|
|
|
|
/**
|
|
* @return array The parameters extracted from the URL by the {@link Director}.
|
|
*/
|
|
function getURLParams() {
|
|
return $this->urlParams;
|
|
}
|
|
|
|
/**
|
|
* Returns the HTTPResponse object that this controller is building up.
|
|
* Can be used to set the status code and headers
|
|
*/
|
|
function getResponse() {
|
|
return $this->response;
|
|
}
|
|
|
|
protected $baseInitCalled = false;
|
|
|
|
/**
|
|
* Executes this controller, and return an {@link HTTPResponse} object with the result.
|
|
*
|
|
* This method first does a few set-up activities:
|
|
* - Push this controller ont to the controller stack - see {@link Controller::curr()} for information about this.
|
|
* - Call {@link init()}
|
|
*
|
|
* Then it looks for the action method. The action is taken from $this->urlParams['Action'] - for this reason, it's important
|
|
* to have $Action included in your Director rule
|
|
*
|
|
* If $requestParams['executeForm'] is set, then the Controller assumes that we're processing a form. This is usually
|
|
* set by adding ?executeForm=XXX to the form's action URL. Form processing differs in the following ways:
|
|
* - The action name will be the name of the button clicked. If no button-click can be detected, the first button in the
|
|
* list will be assumed.
|
|
* - If the given action method doesn't exist on the controller, Controller will look for that method on the Form object.
|
|
* this lets developers package both a form and its action handlers in a single subclass of Form.
|
|
*
|
|
* NOTE: You should rarely need to overload run() - this kind of change is only really appropriate for things like nested
|
|
* controllers - {@link ModelAsController} and {@link RootURLController} are two examples here. If you want to make more
|
|
* orthodox functionality, it's better to overload {@link init()} or {@link index()}.
|
|
*
|
|
* Execute the appropriate action handler. If none is given, use defaultAction to display
|
|
* a template. The default action will be appropriate in most cases where displaying data
|
|
* is the core goal; the Viewer can call methods on the controller to get the data it needs.
|
|
*
|
|
* @param array $requestParams GET and POST variables.
|
|
* @return HTTPResponse The response that this controller produces, including HTTP headers such as redirection info
|
|
*/
|
|
|
|
/**
|
|
* Return the object that is going to own a form that's being processed, and handle its execution.
|
|
* Note that the result needn't be an actual controller object.
|
|
*/
|
|
function getFormOwner() {
|
|
// Get the appropraite ocntroller: sometimes we want to get a form from another controller
|
|
if(isset($this->requestParams['formController'])) {
|
|
$formController = Director::getControllerForURL($this->requestParams['formController']);
|
|
|
|
while(is_a($formController, 'NestedController')) {
|
|
$formController = $formController->getNestedController();
|
|
}
|
|
return $formController;
|
|
|
|
} else {
|
|
return $this;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This is the default action handler used if a method doesn't exist.
|
|
* It will process the controller object with the template returned by {@link getViewer()}
|
|
*/
|
|
function defaultAction($action) {
|
|
return $this->getViewer($action)->process($this);
|
|
}
|
|
|
|
/**
|
|
* Returns the action that is being executed on this controller.
|
|
*/
|
|
function getAction() {
|
|
return $this->action;
|
|
}
|
|
|
|
/**
|
|
* Return an SSViewer object to process the data
|
|
* @return SSViewer The viewer identified being the default handler for this Controller/Action combination
|
|
*/
|
|
function getViewer($action) {
|
|
// Hard-coded templates
|
|
if($this->templates[$action]) {
|
|
$templates = $this->templates[$action];
|
|
} else if($this->templates['index']) {
|
|
$templates = $this->templates['index'];
|
|
} else if($this->template) {
|
|
$templates = $this->template;
|
|
} else {
|
|
$parentClass = $this->class;
|
|
while($parentClass != "Controller") {
|
|
$templateName = $parentClass;
|
|
if(($pos = strpos($templateName,'_')) !== false) $templateName = substr($templateName, 0, $pos);
|
|
|
|
if($action && $action != "index") $templates[] = $templateName . '_' . $action;
|
|
$templates[] = $templateName;
|
|
|
|
$parentClass = get_parent_class($parentClass);
|
|
}
|
|
$templates = array_unique($templates);
|
|
}
|
|
if(isset($_GET['showtemplate'])) Debug::show($templates);
|
|
return new SSViewer($templates);
|
|
}
|
|
|
|
/**
|
|
* Call this to disable basic authentication on test sites.
|
|
* must be called in the init() method
|
|
* @deprecated Use BasicAuth::disable() instead? This is used in CliController - it should be updated.
|
|
*/
|
|
function disableBasicAuth() {
|
|
$this->basicAuthEnabled = false;
|
|
}
|
|
|
|
/**
|
|
* Initialisation function that is run before any action on the controller is called.
|
|
*
|
|
* @uses BasicAuth::requireLogin()
|
|
*/
|
|
function init() {
|
|
// Test and development sites should be secured, via basic-auth
|
|
if(ClassInfo::hasTable("Group") && ClassInfo::hasTable("Member") && Director::isTest() && $this->basicAuthEnabled) {
|
|
BasicAuth::requireLogin("SilverStripe test website. Use your CMS login", "ADMIN");
|
|
}
|
|
|
|
//
|
|
Cookie::set("PastVisitor", true);
|
|
|
|
// ClassInfo::hasTable() called to ensure that we're not in a very-first-setup stage
|
|
if(ClassInfo::hasTable("Group") && ClassInfo::hasTable("Member") && ($member = Member::currentUser())) {
|
|
Cookie::set("PastMember", true);
|
|
DB::query("UPDATE Member SET LastVisited = NOW() WHERE ID = $member->ID", null);
|
|
}
|
|
|
|
// This is used to test that subordinate controllers are actually calling parent::init() - a common bug
|
|
$this->baseInitCalled = true;
|
|
}
|
|
|
|
/**
|
|
* @deprecated use Controller::curr() instead
|
|
* @returns Controller
|
|
*/
|
|
public static function currentController() {
|
|
user_error('Controller::currentController() is deprecated. Use Controller::curr() instead.', E_USER_NOTICE);
|
|
return self::curr();
|
|
}
|
|
|
|
/**
|
|
* Returns the current controller
|
|
* @returns Controller
|
|
*/
|
|
public static function curr() {
|
|
if(Controller::$controller_stack) {
|
|
return Controller::$controller_stack[0];
|
|
} else {
|
|
user_error("No current controller available", E_USER_WARNING);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Tests whether we have a currently active controller or not
|
|
* @return boolean True if there is at least 1 controller in the stack.
|
|
*/
|
|
public static function has_curr() {
|
|
return Controller::$controller_stack ? true : false;
|
|
}
|
|
|
|
/**
|
|
* Returns true if the member is allowed to do the given action.
|
|
* @param perm The permission to be checked, such as 'View'.
|
|
* @param member The member whose permissions need checking. Defaults to the currently logged
|
|
* in user.
|
|
* @return boolean
|
|
* @deprecated I don't believe that the system has widespread use/support of this.
|
|
*/
|
|
function can($perm, $member = null) {
|
|
if(!$member) $member = Member::currentUser();
|
|
if($this->hasMethod($methodName = 'can' . $perm)) {
|
|
return $this->$methodName($member);
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
/**
|
|
* returns a date object for use within a template
|
|
* Usage: $Now.Year - Returns 2006
|
|
* @return Date The current date
|
|
*/
|
|
function Now() {
|
|
$d = new Date(null);
|
|
$d->setVal(date("Y-m-d h:i:s"));
|
|
return $d;
|
|
}
|
|
|
|
/**
|
|
* Returns a link to any other page
|
|
* @deprecated It's unclear what value this has; construct a link manually or use your own custom link-gen functions.
|
|
*/
|
|
function LinkTo($a, $b) {
|
|
return Director::baseURL() . $a . '/' . $b;
|
|
}
|
|
|
|
/**
|
|
* Returns an absolute link to this controller
|
|
*/
|
|
function AbsoluteLink() {
|
|
return Director::absoluteURL($this->Link());
|
|
}
|
|
|
|
/**
|
|
* Returns the currently logged in user
|
|
*/
|
|
function CurrentMember() {
|
|
return Member::currentUser();
|
|
}
|
|
|
|
/**
|
|
* Returns true if the visitor has been here before
|
|
* @return boolean
|
|
*/
|
|
function PastVisitor() {
|
|
return Cookie::get("PastVisitor") ? true : false;
|
|
}
|
|
|
|
/**
|
|
* Return true if the visitor has signed up for a login account before
|
|
* @return boolean
|
|
*/
|
|
function PastMember() {
|
|
return Cookie::get("PastMember") ? true : false;
|
|
}
|
|
|
|
/**
|
|
* Pushes this controller onto the stack of current controllers.
|
|
* This means that any redirection, session setting, or other things that rely on Controller::curr() will now write to this
|
|
* controller object.
|
|
*/
|
|
function pushCurrent() {
|
|
array_unshift(self::$controller_stack, $this);
|
|
// Create a new session object
|
|
if(!$this->session) {
|
|
if(isset(self::$controller_stack[1])) {
|
|
$this->session = self::$controller_stack[1]->getSession();
|
|
} else {
|
|
$this->session = new Session(null);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Pop this controller off the top of the stack.
|
|
*/
|
|
function popCurrent() {
|
|
if($this === self::$controller_stack[0]) {
|
|
array_shift(self::$controller_stack);
|
|
} else {
|
|
user_error("popCurrent called on $this->class controller, but it wasn't at the top of the stack", E_USER_WARNING);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Redirct to the given URL.
|
|
* It is generally recommended to call Director::redirect() rather than calling this function directly.
|
|
*/
|
|
function redirect($url, $code=302) {
|
|
if($this->response->getHeader('Location')) {
|
|
user_error("Already directed to " . $this->response->getHeader('Location') . "; now trying to direct to $url", E_USER_WARNING);
|
|
return;
|
|
}
|
|
|
|
// Attach site-root to relative links, if they have a slash in them
|
|
if($url == "" || $url[0] == '?' || (substr($url,0,4) != "http" && $url[0] != "/" && strpos($url,'/') !== false)){
|
|
$url = Director::baseURL() . $url;
|
|
}
|
|
|
|
$this->response->redirect($url, $code);
|
|
}
|
|
|
|
/**
|
|
* Tests whether a redirection has been requested.
|
|
* @return string If redirect() has been called, it will return the URL redirected to. Otherwise, it will return null;
|
|
*/
|
|
function redirectedTo() {
|
|
return $this->response->getHeader('Location');
|
|
}
|
|
|
|
/**
|
|
* Get the Session object representing this Controller's session
|
|
* @return Session
|
|
*/
|
|
function getSession() {
|
|
return $this->session;
|
|
}
|
|
|
|
/**
|
|
* Set the Session object.
|
|
*/
|
|
function setSession(Session $session) {
|
|
$this->session = $session;
|
|
}
|
|
|
|
/**
|
|
* Returns true if this controller is processing an ajax request
|
|
* @return boolean True if this controller is processing an ajax request
|
|
*/
|
|
function isAjax() {
|
|
return (
|
|
isset($this->requestParams['ajax']) ||
|
|
(isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == "XMLHttpRequest")
|
|
);
|
|
}
|
|
|
|
}
|
|
|
|
?>
|