php – 如何使用zend_auth作为插件

您可以扩展Zend_Auth并添加额外的方法来设置auth适配器并管理存储,然后您可以调用Your_Custom_Auth :: getInstance()来获取auth实例,然后您可以在preDispatcth()部分中检查auth.您需要身份验证的控制器.

这样,您可以使用更少的代码轻松地在多个位置使用zend_auth

<?php

class My_User_Authenticator extends Zend_Auth
{
    protected function __construct()
    {}

    protected function __clone()
    {}

    public static function getInstance()
    {
        if (null === self::$_instance) {
            self::$_instance = new self();
        }

        return self::$_instance;
    }

    // example using zend_db_adapter_dbtable and mysql
    public static function getAdapter($username,$password)
    {
        $db = Zend_Controller_Front::getInstance()
                                     ->getParam('bootstrap')
                                     ->getResource('db');

        $authAdapter = new Zend_Auth_Adapter_DbTable($db,'accounts','username','password');

        $authAdapter->setIdentity($username)
                    ->setCredential($password)
                    ->setCredentialTreatment(
                        'SHA1(?)'
                    );

        return $authAdapter;
    }

    public static function updateStorage($storageObject)
    {
        self::$_instance->getStorage()->write($storageObject);
    }
}


// in your controllers that should be fully protected,or specific actions
// you could put this in your controller's preDispatch() method
if (My_User_Authenticator::getInstance()->hasIdentity() == false) {
    // forward to login action
}


// to log someone in
$auth = My_User_Authenticator::getInstance();

$result = $auth->authenticate(
    My_User_Authenticator::getAdapter(
        $form->getValue('username'),$form->getValue('password'))
);

if ($result->isValid()) {
    $storage = new My_Session_Object();
    $storage->username = $form->getValue('username');
    // this object should hold the info about the logged in user,e.g. account details
    My_User_Authenticator::getInstance()->updateStorage($storage); // session now has identity of $storage
    // forward to page
} else {
    // invalid user or pass
}

希望有所帮助.