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使用zend framework框架搭建网站(三) --smarty扩展

2011-12-05 08:52 591 查看
使用zend framework框架搭建网站(三) --smarty扩展
2008/07/24 11:02 P.M.
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;

}

}

}

三.在app文件夹下创建cache ，compile 文件夹

四，在config.ini 配置文件中加入

dir.compile = ../app/compile

dir.cache = ../app/cache

三，四两步可以参见hi.baidu.com/billdkj/blog/item/bec0b4fc8db6c0fbfd037f34.html《使用zendfreamwork框架搭建网站(二)》

五, 在application.php 文件中添加

/**

* 初始化smarty视图

*

*/

private function _initSmartyView()

{

$view = new Zend_View_Smarty();

$view->setBasePath($this->_pathConfig->dir->viewBase);

$view->setScriptPath($this->_pathConfig->dir->viewBase."/scripts");

$view->setCompilePath($this->_pathConfig->dir->compile);

$view->setCachePath($this->_pathConfig->dir->cache);

$smarty=$view->getEngine();

$smarty->caching=false;

$smarty->debugging = true;

$smarty->compile_check = true;

$smarty->left_delimiter = "<{"; //定义标示符

$smarty->right_delimiter = "}>";

$registry = Zend_Registry::getInstance();

$registry->set('smartyview',$smarty); //smarty对象

$registry->set('sview',$view);

}

并在 函数 init()中加入 $this->_initSmartyView();

六:在Controller中调用

因为已经将对象注册，所以可以如下调用：

$view = Zend_Registry::getInstance()->get("smartyview"); //注意这是smarty对象，使用smarty的那些语法，比如 $view->assign("user","root");

$view = Zend_Registry::getInstance()->get("sview");
//这是zf的view对象，按zf中的那些方法用，不用改变。按这样，你如果要将以前写的代码改为用smaty，后台不用变了，只需要将视图文件改变就行了
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