Zend Framework框架Smarty扩展实现方法

本文实例讲述了Zend Framework框架Smarty扩展实现方法。分享给大家供大家参考，具体如下：

今天总结一下ZF框架中扩展Smarty模板的方法，在ZF帮助文档中已经有比较详细的介绍，在这我稍微多说一些。

一.将smarty的核心文件包放在lib文件夹下，文件包中要包括（internals/,plugins/,Config_File.class.php,Smarty.class.php,Smarty_Compiler.class.php,debug.tpl）.

二.在Zend/View下添加文件：Smarty.php ，文件的内容如下：

<?php/*** Zend_View_Interface*/require_once 'Zend/View/Interface.php';/*** Smarty */require_once("smarty/Smarty.class.php");/*** 创建Smarty视图*/class Zend_View_Smarty implements Zend_View_Interface{  /**   * Smarty object   * @var Smarty   */  protected $_smarty;  /**   * Constructor   *   * @param string $tmplPath   * @param array $extraParams   * @return void   */  public function __construct($tmplPath = null, $extraParams = array())  {    $this->_smarty = new Smarty;    if (null !== $tmplPath) {      $this->setScriptPath($tmplPath);    }    foreach ($extraParams as $key => $value) {      $this->_smarty->$key = $value;    }  }  /**   * Return the template engine object     *   * @return Smarty   */  public function getEngine()  {    return $this->_smarty;  }  /**   * Set the path to the templates   *   * @param string $path The directory to set as the path.   * @return void   */  public function setScriptPath($path)  {    if (is_readable($path)) {      $this->_smarty->template_dir = $path;      return;    }    throw new Exception('Invalid path provided');  }  /**  * set smarty缓存  * @author lengfeng  */  public function setCompilePath($path){    if (is_readable($path)) {      $this->_smarty->compile_dir = $path;      return;    }    throw new Exception('Invalid path provided');      }  /**  * set smarty 编译后文档  * @author lengfeng  */  public function setCachePath($path){    if (is_readable($path)) {      $this->_smarty->cache_dir = $path;      return;    }    throw new Exception('Invalid path provided');      }  /**   * Retrieve the current template directory   *   * @return string   */  public function getScriptPaths()  {    return array($this->_smarty->template_dir);  }  /**   * Alias for setScriptPath   *   * @param string $path   * @param string $prefix Unused   * @return void   */  public function setBasePath($path, $prefix = 'Zend_View')  {    return $this->setScriptPath($path);  }  /**   * Alias for setScriptPath   *   * @param string $path   * @param string $prefix Unused   * @return void   */  public function addBasePath($path, $prefix = 'Zend_View')  {    return $this->setScriptPath($path);  }  /**   * Assign a variable to the template   *   * @param string $key The variable name.   * @param mixed $val The variable value.   * @return void   */  public function __set($key, $val)  {    $this->_smarty->assign($key, $val);  }  /**   * Retrieve an assigned variable   *   * @param string $key The variable name.   * @return mixed The variable value.   */  public function __get($key)  {    return $this->_smarty->get_template_vars($key);  }  /**   * Allows testing with empty() and isset() to work   *   * @param string $key   * @return boolean   */  public function __isset($key)  {     return (null !== $this->_smarty->get_template_vars($key));  }  /**   * Allows unset() on object properties to work   *   * @param string $key   * @return void   */  public function __unset($key)  {    $this->_smarty->clear_assign($key);  }  /**   * Assign variables to the template   *   * Allows setting a specific key to the specified value, OR passing an array   * of key => value pairs to set en masse.   *   * @see __set()   * @param string|array $spec The assignment strategy to use (key or array of key   * => value pairs)   * @param mixed $value (Optional) If assigning a named variable, use this   * as the value.   * @return void   */  public function assign($spec, $value = null)  {    if (is_array($spec)) {      $this->_smarty->assign($spec);      return;    }    $this->_smarty->assign($spec, $value);  }  /**   * Clear all assigned variables   *   * Clears all variables assigned to Zend_View either via {@link assign()} or   * property overloading ({@link __get()}/{@link __set()}).   *   * @return void   */  public function clearVars()  {    $this->_smarty->clear_all_assign();  }  /**   * Processes a template and returns the output.   *   * @param string $name The template to process.   * @return string The output.   */  public function render($name)  {    return $this->_smarty->fetch($name);  }  /**   * 设置是否生成缓存   * 如果没有参数,默认为true   */  public function setCache($bool){     if (isset($bool)) {      $this->_smarty->caching = $bool;      return;    }  }}