Integrating Zend and Smarty

Two easy step to integrating Zend Framework and Smarty Template Engine.

• Implement Zend_View_Interface
• Configure ViewRenderer Helper

Simple Zend_View_Interface Implementation

<?php
require_once 'Zend/View/Interface.php';
require_once 'Smarty/Smarty.class.php';

/**
 * Simple implementation for Zend View Interface using Smarty Template Engine
 * 
 * @author fridayana baabullah
 */
class App_View_Smarty implements Zend_View_Interface{
 
 /**
  * @var Smarty
  */
 private $smarty;
 
 public function __construct($base) {
  /* Set up Smarty as usual */
  
  $this->smarty = new Smarty();  
  $this->smarty->template_dir = $base . 'templates';
  $this->smarty->compile_dir  = $base . 'templates_c'; 
  $this->smarty->config_dir   = $base . 'configs';
  $this->smarty->cache_dir    = $base . 'cache';
 }
 
    /**
     * 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 Smarty
     */
    public function getEngine() {
     return $this->smarty;
    }

    /**
     * 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($path) {
     if (is_readable($path)) {
            $this->smarty->template_dir = $path;            
        }
    }

    /**
     * Retrieve all view script paths
     *
     * @return array
     */
    public function getScriptPaths() {
     return array($this->smarty->template_dir);
    }

    /**
     * Set a base path to all view resources
     *
     * @param  string $path
     * @param  string $classPrefix
     * @return void
     */
    public function setBasePath($path, $classPrefix = 'Zend_View') {
     return $this->setScriptPath($path);
    }

    /**
     * Add an additional path to view resources
     *
     * @param  string $path
     * @param  string $classPrefix
     * @return void
     */
    public function addBasePath($path, $classPrefix = 'Zend_View') {
     // Ignored! Cannot add additional path to smarty
    }

    /**
     * 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) {
     $this->smarty->assign($key, $val);
    }

    /**
     * Allows testing with empty() and isset() to work
     *
     * @param string $key
     * @return boolean
     */
    public function __isset($key) {
     return $this->smarty->get_config_vars($key) !== null;
    }

    /**
     * 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 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, $value = null) {
     if (is_array($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() {
     return $this->smarty->clear_all_assign();
    }

    /**
     * Processes a view script and returns the output.
     *
     * @param string $name The script script name to process.
     * @return string The script output.
     */
    public function render($name) {
     return $this->smarty->fetch($name);
    }
}

Configure ViewRenderer Helper

require_once 'App/View/Smarty.php';
require_once 'Zend/Controller/Action/HelperBroker.php';
require_once 'Zend/Controller/Action/Helper/ViewRenderer.php';

$view = new App_View_Smarty('/opt/project/smarty/');
$viewRenderer = new Zend_Controller_Action_Helper_ViewRenderer($view);
$viewRenderer->setViewSuffix('tpl');

Zend_Controller_Action_HelperBroker::addHelper($viewRenderer);

Your controller code is remain the same:

require_once 'App/Controller/Base.php';

/**
 * Default action controller
 *
 */
class IndexController extends App_Controller_Base {  
    public function indexAction() { 
     $this->view->assign('first_name', 'fridayana');
 $this->view->last_name = 'baabullah';
    }
}

Here is the smarty template file (index.tpl):

Hello {$first_name} {$last_name}