Zend Framework实现Zend_View集成Smarty模板系统的方法

04111

Zend Framework实现Zend_View集成Smarty模板系统的方法。具体如下：

Zend_View抽象出了Zend_View_Interface，可以让我们集成不同的视图解决方案，例如可以集成smarty。要在zend中使用其他视图系统作为视图，只要实现Zend_View_Interface接口即可。

Zend_View_Interface的接口定义:

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<?php
/**
 * Interface class for Zend_View compatible template engine implementations
 *
 * @category  Zend
 * @package  Zend_View
 * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license  http://framework.zend.com/license/new-bsd   New BSD License
 */
interface Zend_View_Interface
{
  /**
   * Return the template engine object, if any
   *
   * If using a third-party template engine, such as Smarty, patTemplate,
   * phplib, etc, return the template engine object. Useful for calling
   * methods on these objects, such as for setting filters, modifiers, etc.
   *
   * @return mixed
   */
  /**
   * Set the path to find the view script used by render()
   *
   * @param string|array The directory (-ies) to set as the path. Note that
   * the concrete view implentation may not necessarily support multiple
   * directories.
   * @return void
   */
  public function setScriptPath($path);
  /**
   * Retrieve all view script paths
   *
   * @return array
   */
  public function getScriptPaths();
  /**
   * Set a base path to all view resources
   *
   * @param string $path
   * @param string $classPrefix
   * @return void
   */
  public function setBasePath($path, $classPrefix = 'Zend_View');
  /**
   * Add an additional path to view resources
   *
   * @param string $path
   * @param string $classPrefix
   * @return void
   */
  public function addBasePath($path, $classPrefix = 'Zend_View');
  /**
   * Assign a variable to the view
   *
   * @param string $key The variable name.
   * @param mixed $val The variable value.
   * @return void
   */
  public function __set($key, $val);
  /**
   * Allows testing with empty() and isset() to work
   *
   * @param string $key
   * @return boolean
   */
  public function __isset($key);
  /**
   * Allows unset() on object properties to work
   *
   * @param string $key
   * @return void
   */
  public function __unset($key);
  /**
   * Assign variables to the view script via differing strategies.
   *
   * Suggested implementation is to allow 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);
  /**
   * 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();
  /**
   * Processes a view script and returns the output.
   *
   * @param string $name The script name to process.
   * @return string The script output.
   */
  public function render($name);
}

集成Smarty的基本实现如下：

smarty下载地址

http://www.smarty.net/files/Smarty-3.1.7.tar.gz

目录结构

root@coder-671T-M:/www/zf_demo1# tree
.
├── application
│   ├── Bootstrap.php
│   ├── configs
│   │   └── application.ini
│   ├── controllers
│   │   ├── ErrorController.php
│   │   └── IndexController.php
│   ├── models
│   └── views
│       ├── helpers
│       └── scripts
│           ├── error
│           │   └── error.phtml
│           └── index
│               ├── index.phtml
│               └── index.tpl
├── docs
│   └── README.txt
├── library
│   ├── Lq
│   │   └── View
│   │       └── Smarty.php
│   └── smartylib
│       ├── debug.tpl
│       ├── plugins
│       │   ├── ………………………
│       │   └── variablefilter.htmlspecialchars.php
│       ├── SmartyBC.class.php
│       ├── Smarty.class.php
│       └── sysplugins
│           ├── ……………………..
│           └── smarty_security.php
├── public
│   └── index.php
├── temp
│   └── smarty
│       └── templates_c
│           └── 73d91bef3fca4e40520a7751bfdfb3e44b05bdbd.file.index.tpl.php
└── tests
├── application
│   └── controllers
│       └── IndexControllerTest.php
├── bootstrap.php
├── library
└── phpunit.xml

24 directories, 134 files

/zf_demo1/library/Lq/View/Smarty.php

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<?php
require_once 'smartylib/Smarty.class.php';
class Lq_View_Smarty implements Zend_View_Interface {
  /**
   * Smarty object
   *
   * @var Smarty
   */
  protected $_smarty;
  /**
   * Constructor
   *
   * @param $tmplPath string
   * @param $extraParams array
   * @return void
   */
  public function __construct($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 $path string
   *      The directory to set as the path.
   * @return void
   */
  public function setScriptPath($path) {
    if (is_readable ( $path )) {
      $this->_smarty->template_dir = $path;
      return;
    }
    throw new Exception ( 'Invalid path provided' );
  }
  /**
   * Retrieve the current template directory
   *
   * @return string
   */
  public function getScriptPaths() {
    return array ($this->_smarty->template_dir );
  }
  /**
   * Alias for setScriptPath
   *
   * @param $path string
   * @param $prefix string
   *      Unused
   * @return void
   */
  public function setBasePath($path, $prefix = 'Zend_View') {
    return $this->setScriptPath ( $path );
  }
  /**
   * Alias for setScriptPath
   *
   * @param $path string
   * @param $prefix string
   *      Unused
   * @return void
   */
  public function addBasePath($path, $prefix = 'Zend_View') {
    return $this->setScriptPath ( $path );
  }
  /**
   * Assign a variable to the template
   *
   * @param $key string
   *      The variable name.
   * @param $val mixed
   *      The variable value.
   * @return void
   */
  public function __set($key, $val) {
    $this->_smarty->assign ( $key, $val );
  }
  /**
   * Retrieve an assigned variable
   *
   * @param $key string
   *      The variable name.
   * @return mixed The variable value.
   */
  public function __get($key) {
    return $this->_smarty->get_template_vars ( $key );
  }
  /**
   * Allows testing with empty() and isset() to work
   *
   * @param $key string
   * @return boolean
   */
  public function __isset($key) {
    return (null !== $this->_smarty->get_template_vars ( $key ));
  }
  /**
   * Allows unset() on object properties to work
   *
   * @param $key string
   * @return void
   */
  public function __unset($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 $spec string|array
   *      The assignment strategy to use (key or array of key
   *      => value pairs)
   * @param $value mixed
   *      (Optional) If assigning a named variable, use this
   *      as the value.
   * @return void
   */
  public function assign($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 $name string
   *      The template to process.
   * @return string The output.
   */
  public function render($name) {
    ob_start();
    echo $this->_smarty->fetch ( $name );
    unset($name);
  }
}

/zf_demo1/application/configs/application.ini

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[production]
includePaths.library = APPLICATION_PATH "/../library"
bootstrap.path = APPLICATION_PATH "/Bootstrap.php"
bootstrap.class = "Bootstrap"
appnamespace = "Application"
autoloadernamespaces.lq = "Lq_"
pluginpaths.Lq_View_Smarty = "Lq/View/Smarty"
resources.frontController.controllerDirectory = APPLICATION_PATH "/controllers"
resources.frontController.params.displayExceptions = 1
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1

/zf_demo1/application/Bootstrap.php

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<?php
class Bootstrap extends Zend_Application_Bootstrap_Bootstrap {
  /**
   * Initialize Smarty view
   */
  protected function _initSmarty() {
    $smarty = new Lq_View_Smarty ();
    $smarty->setScriptPath('/www/zf_demo1/application/views/scripts');
    return $smarty;
  }
}

/zf_demo1/application/controllers/IndexController.php

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<?php
class IndexController extends Zend_Controller_Action {
  public function init() {
    /*
     * Initialize action controller here
     */
  }
  public function indexAction() {
    $this->_helper->getHelper('viewRenderer')->setNoRender();
    $this->view = $this->getInvokeArg ( 'bootstrap' )->getResource ( 'smarty' );
    $this->view->book = 'Hello World! ';
    $this->view->author = 'by smarty';
    $this->view->render('index/index.tpl');
  }
}

/zf_demo1/application/views/scripts/index/index.tpl

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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
{$book}
{$author}
</body>
</html>

如果需要配置smarty可以打开/zf_demo1/library/smartylib/Smarty.class.php文件进行相应配置例如

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/**
* Initialize new Smarty object
*
*/
public function __construct()
{
    // selfpointer needed by some other class methods
    $this->smarty = $this;
    if (is_callable('mb_internal_encoding')) {
      mb_internal_encoding(Smarty::$_CHARSET);
    }
    $this->start_time = microtime(true);
    // set default dirs
    $this->setTemplateDir('/www/zf_demo1/temp/smarty' . DS . 'templates' . DS)
      ->setCompileDir('/www/zf_demo1/temp/smarty' . DS . 'templates_c' . DS)
      ->setPluginsDir(SMARTY_PLUGINS_DIR)
      ->setCacheDir('/www/zf_demo1/temp/smarty' . DS . 'cache' . DS)
      ->setConfigDir('/www/zf_demo1/temp/smarty' . DS . 'configs' . DS);
    $this->debug_tpl = 'file:' . dirname(__FILE__) . '/debug.tpl';
    if (isset($_SERVER['SCRIPT_NAME'])) {
      $this->assignGlobal('SCRIPT_NAME', $_SERVER['SCRIPT_NAME']);
    }
}
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