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Zend Framework动作助手FlashMessenger用法详解

网络编程 2021-07-05 09:10www.168986.cn编程入门
这篇文章主要介绍了Zend Framework动作助手FlashMessenger用法,分析了动作助手FlashMessenger的功能,并结合实例形式演示了FlashMessenger的使用技巧,需要的朋友可以参考下

本文实例讲述了Zend Framework动作助手FlashMessenger用法。分享给大家供大家参考，具体如下

FlashMessenger 用来处理Flash Messenger会话；FlashMessenger是一个神奇的助手。

有这么一种场景，在用户注册成功后，需要在提示页面上显示用户的名称，如果不通过get传递请求，你也可以通过session传递

要显示的用户名称。seesion的操作难免复杂，可以使用Flash Messenger快速的实现这个需求。

FlashMessenger助手允许你传递用户可能需要在下个请求看到的消息。

FlashMessenger也是使用Zend_Session_Namespace来存储消息以备将来或下个请求来读取，相对简单一些。

FlashMessenger简单用法

在helper_demo1项目的基础上

新增/helper_demo1/application/controllers/UserController.php

<?php
class UserController extends Zend_Controller_Action
{
  protected $_flashMessenger = null;
  public function init()
  {
    $this->_flashMessenger =
    $this->_helper->getHelper('FlashMessenger');
    $this->initView();
  }
  public function registerAction()
  {
    $this->_flashMessenger->addMessage('xxxxx,Wele!');
    $this->_helper->redirector('regtips');
  }
  public function regtipsAction()
  {
    $this->view->messages = $this->_flashMessenger->getMessages();
  }
}

新增/helper_demo1/application/views/scripts/user/regtips.phtml

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://.w3./TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>test</title>
</head>
<body>
<?php
var_dump($this->messages);
?>
</body>
</html>

访问http://.localzend./helper_demo1/public/user/register
跳转到http://.localzend./helper_demo1/public/user/regtips

FlashMessager实现源码如下

<?php
/
  Zend Framework
 
  LICENSE
 
  This source file is subject to the new BSD license that is bundled
  with this package in the file LICENSE.txt.
  It is also available through the world-wide-web at this URL:
  http://framework.zend./license/new-bsd
  If you did not receive a copy of the license and are unable to
  obtain it through the world-wide-web, please send an email
  to license@zend. so we can send you a copy immediately.
 
  @category  Zend
  @package  Zend_Controller
  @subpackage Zend_Controller_Action_Helper
  @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://.zend.)
  @license  http://framework.zend./license/new-bsd   New BSD License
 /
/
  @see Zend_Session
 /
require_once 'Zend/Session.php';
/
  @see Zend_Controller_Action_Helper_Abstract
 /
require_once 'Zend/Controller/Action/Helper/Abstract.php';
/
  Flash Messenger - implement session-based messages
 
  @uses    Zend_Controller_Action_Helper_Abstract
  @category  Zend
  @package  Zend_Controller
  @subpackage Zend_Controller_Action_Helper
  @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://.zend.)
  @license  http://framework.zend./license/new-bsd   New BSD License
  @version  $Id: FlashMessenger.php 23775 2011-03-01 17:25:24Z ralph $
 /
class Zend_Controller_Action_Helper_FlashMessenger extends Zend_Controller_Action_Helper_Abstract implements IteratorAggregate, Countable
{
  /
    $_messages - Messages from previous request
   
    @var array
   /
  static protected $_messages = array();
  /
    $_session - Zend_Session storage object
   
    @var Zend_Session
   /
  static protected $_session = null;
  /
    $_messageAdded - Wether a message has been previously added
   
    @var boolean
   /
  static protected $_messageAdded = false;
  /
    $_namespace - Instance namespace, default is 'default'
   
    @var string
   /
  protected $_namespace = 'default';
  /
    __construct() - Instance constructor, needed to get iterators, etc
   
    @param string $namespace
    @return void
   /
  public function __construct()
  {
    if (!self::$_session instanceof Zend_Session_Namespace) {
      self::$_session = new Zend_Session_Namespace($this->getName());
      foreach (self::$_session as $namespace => $messages) {
        self::$_messages[$namespace] = $messages;
        unset(self::$_session->{$namespace});
      }
    }
  }
  /
    postDispatch() - runs after action is dispatched, in this
    case, it is resetting the namespace in case we have forwarded to a different
    action, Flashmessage will be 'clean' (default namespace)
   
    @return Zend_Controller_Action_Helper_FlashMessenger Provides a fluent interface
   /
  public function postDispatch()
  {
    $this->resetNamespace();
    return $this;
  }
  /
    setNamespace() - change the namespace messages are added to, useful for
    per action controller messaging between requests
   
    @param string $namespace
    @return Zend_Controller_Action_Helper_FlashMessenger Provides a fluent interface
   /
  public function setNamespace($namespace = 'default')
  {
    $this->_namespace = $namespace;
    return $this;
  }
  /
    resetNamespace() - reset the namespace to the default
   
    @return Zend_Controller_Action_Helper_FlashMessenger Provides a fluent interface
   /
  public function resetNamespace()
  {
    $this->setNamespace();
    return $this;
  }
  /
    addMessage() - Add a message to flash message
   
    @param string $message
    @return Zend_Controller_Action_Helper_FlashMessenger Provides a fluent interface
   /
  public function addMessage($message)
  {
    if (self::$_messageAdded === false) {
      self::$_session->setExpirationHops(1, null, true);
    }
    if (!is_array(self::$_session->{$this->_namespace})) {
      self::$_session->{$this->_namespace} = array();
    }
    self::$_session->{$this->_namespace}[] = $message;
    return $this;
  }
  /
    hasMessages() - Wether a specific namespace has messages
   
    @return boolean
   /
  public function hasMessages()
  {
    return isset(self::$_messages[$this->_namespace]);
  }
  /
    getMessages() - Get messages from a specific namespace
   
    @return array
   /
  public function getMessages()
  {
    if ($this->hasMessages()) {
      return self::$_messages[$this->_namespace];
    }
    return array();
  }
  /
    Clear all messages from the previous request & current namespace
   
    @return boolean True if messages were cleared, false if none existed
   /
  public function clearMessages()
  {
    if ($this->hasMessages()) {
      unset(self::$_messages[$this->_namespace]);
      return true;
    }
    return false;
  }
  /
    hasCurrentMessages() - check to see if messages have been added to current
    namespace within this request
   
    @return boolean
   /
  public function hasCurrentMessages()
  {
    return isset(self::$_session->{$this->_namespace});
  }
  /
    getCurrentMessages() - get messages that have been added to the current
    namespace within this request
   
    @return array
   /
  public function getCurrentMessages()
  {
    if ($this->hasCurrentMessages()) {
      return self::$_session->{$this->_namespace};
    }
    return array();
  }
  /
    clear messages from the current request & current namespace
   
    @return boolean
   /
  public function clearCurrentMessages()
  {
    if ($this->hasCurrentMessages()) {
      unset(self::$_session->{$this->_namespace});
      return true;
    }
    return false;
  }
  /
    getIterator() - plete the IteratorAggregate interface, for iterating
   
    @return ArrayObject
   /
  public function getIterator()
  {
    if ($this->hasMessages()) {
      return new ArrayObject($this->getMessages());
    }
    return new ArrayObject();
  }
  /
    count() - Complete the countable interface
   
    @return int
   /
  public function count()
  {
    if ($this->hasMessages()) {
      return count($this->getMessages());
    }
    return 0;
  }
  /
    Strategy pattern: proxy to addMessage()
   
    @param string $message
    @return void
   /
  public function direct($message)
  {
    return $this->addMessage($message);
  }
}

更多关于zend相关内容感兴趣的读者可查看本站专题《》、《》、《》、《》、《》、《》及《》

希望本文所述对大家PHP程序设计有所帮助。

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