Zend Framework创建自己的动作助手详解

本文实例讲述了Zend Framework创建自己的动作助手实现方法。分享给大家供大家参考，具体如下：

助手的抽象基类是Zend_Controller_Action_Helper_Abstract，如要定义自己的助手，需要继承此类。

类的源代码如下：

<?php/** * @see Zend_Controller_Action */require_once 'Zend/Controller/Action.php';abstract class Zend_Controller_Action_Helper_Abstract{  /**   * $_actionController   *   * @var Zend_Controller_Action $_actionController   */  protected $_actionController = null;  /**   * @var mixed $_frontController   */  protected $_frontController = null;  /**   * setActionController()   *   * @param Zend_Controller_Action $actionController   * @return Zend_Controller_ActionHelper_Abstract Provides a fluent interface   */  public function setActionController(Zend_Controller_Action $actionController = null)  {    $this->_actionController = $actionController;    return $this;  }  /**   * Retrieve current action controller   *   * @return Zend_Controller_Action   */  public function getActionController()  {    return $this->_actionController;  }  /**   * Retrieve front controller instance   *   * @return Zend_Controller_Front   */  public function getFrontController()  {    return Zend_Controller_Front::getInstance();  }  /**   * Hook into action controller initialization   *   * @return void   */  public function init()  {  }  /**   * Hook into action controller preDispatch() workflow   *   * @return void   */  public function preDispatch()  {  }  /**   * Hook into action controller postDispatch() workflow   *   * @return void   */  public function postDispatch()  {  }  /**   * getRequest() -   *   * @return Zend_Controller_Request_Abstract $request   */  public function getRequest()  {    $controller = $this->getActionController();    if (null === $controller) {      $controller = $this->getFrontController();    }    return $controller->getRequest();  }  /**   * getResponse() -   *   * @return Zend_Controller_Response_Abstract $response   */  public function getResponse()  {    $controller = $this->getActionController();    if (null === $controller) {      $controller = $this->getFrontController();    }    return $controller->getResponse();  }  /**   * getName()   *   * @return string   */  public function getName()  {    $fullClassName = get_class($this);    if (strpos($fullClassName, '_') !== false) {      $helperName = strrchr($fullClassName, '_');      return ltrim($helperName, '_');    } elseif (strpos($fullClassName, '//') !== false) {      $helperName = strrchr($fullClassName, '//');      return ltrim($helperName, '//');    } else {      return $fullClassName;    }  }}

助手基类提供的常用方法如下：

setActionController() 用来设置当前的动作控制器。
init()，该方法在实例化时由助手经纪人触发，可用来触发助手的初始化过程；