public function isValid($value)
{
$this->_setValue($value);
if ($this->_current_user == $value) {
return true;
}
$m_users = new GD_Model_UsersMapper();
$existing_user = $m_users->getUserByName($value, false);
if (is_null($existing_user)) {
return true;
} else {
$this->_error(self::ISUNIQUE);
return false;
}
}
/**
* Check that the user has an identity (is logged in) and that they have
* sufficient access to the resource (page) requested.
*
* (non-PHPdoc)
* @see Zend_Controller_Plugin_Abstract::preDispatch()
*/
public function preDispatch(Zend_Controller_Request_Abstract $request)
{
// If we are on the error controller, return immediately to prevent
// any database errors happening on error page
if ($request->controller == "error") {
return;
}
// First determine what role we have (admin, member or guest)
if ($this->_auth->hasIdentity()) {
$username = Zend_Auth::getInstance()->getIdentity();
$userMapper = new GD_Model_UsersMapper();
$user = $userMapper->getUserByName($username);
if ($user->isAdmin()) {
$role = 'admin';
} else {
$role = 'member';
}
} else {
$role = 'guest';
}
// Set the initial request - these will be unmodified if access allowed
$controller = $request->controller;
$action = $request->action;
$module = $request->module;
$resource = $controller;
if (!$this->_acl->has($resource)) {
$resource = null;
}
// Use Zend_Acl to check access permissions
if (!$this->_acl->isAllowed($role, $resource, $action)) {
if (!$this->_auth->hasIdentity()) {
$module = $this->_noauth['module'];
$controller = $this->_noauth['controller'];
$action = $this->_noauth['action'];
} else {
$module = $this->_noacl['module'];
$controller = $this->_noacl['controller'];
$action = $this->_noacl['action'];
}
}
// If the module/controller/action has changed, change the request
if ($request->controller != $controller || $request->action != $action || $request->module != $module) {
$request->setModuleName($module);
$request->setControllerName($controller);
$request->setActionName($action);
}
}
/**
* Handy dandy function to get the GD_Model_User object from the currently
* logged in Zend_Auth identity. Returns null on failure.
*
* @return GD_Model_User|null
*/
public static function GetLoggedInUser()
{
if (!isset(self::$_currentUser) || is_null(self::$_currentUser) || !self::$_currentUser instanceof GD_Model_User) {
$auth = Zend_Auth::getInstance();
$username = $auth->getIdentity();
if (is_null($username)) {
return null;
}
$users = new GD_Model_UsersMapper();
self::$_currentUser = $users->getUserByName($username, true);
return self::$_currentUser;
} else {
return self::$_currentUser;
}
}
