Yaf + Smarty 整合笔记

Yaf真的是太简单了，简单到使用mvc的时候在view里面需要手写php脚本。因此考虑整合一下smarty模板引擎。随心所欲也正是yaf的魅力

Yaf 安装

这里简单说一下yaf的安装，已经是非常无脑了。下载安装与php版本相对应的yaf.so Yaf扩展下载：https://pecl.php.net/package/yaf
文档参考：Yaf开发文档
修改 php.ini
[yaf]
; Yaf Framework
extension="/usr/lib64/php/modules/yaf.so"
; fix Yaf_Loader err
yaf.use_spl_autoload=On

开启yaf.use_spl_autoload可以解决下面这个问题
Warning: Yaf_Loader::autoload() [yaf-loader.autoload]: Failed opening script...

不过官方建议还是关闭这个选项。

Smarty

将Smarty 放入 yaf 的 library 目录里。新建一个 Adapter.php 做接入：

<?php
/**
 *
 * @Author: Carl
 * @Since: 2017-11-23 11:45
 * Created by PhpStorm.
 */
Yaf_Loader::import( "Smarty/Smarty.class.php");

class Smarty_Adapter implements Yaf_View_Interface
{
    /**
     * Smarty object
     * @var Smarty
     */
    public $_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);
        }
        // var_dump($extraParams);
        foreach ($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');
    }
    /**
     * Retrieve the current template directory
     *
     * @return string
     */
    public function getScriptPath()
    {
        return $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);
    }

    /**
     * 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, $value = NULL) {
        return $this->_smarty->fetch($name);
    }

    public function display($name, $value = NULL) {
        echo $this->_smarty->fetch($name);
    }

}

这里用 Smarty_Adapter 继承了 Yaf 的 view . 将yaf的view的相关方法转交给smarty处理

Bootstrap

通过Bootstrap.php 在 yaf 中初始化 smarty

public function _initSmarty(Yaf_Dispatcher $dispatcher){
    $smarty = new Smarty_Adapter(null , Yaf_Application::app()->getConfig()->smarty);
    Yaf_Dispatcher::getInstance()->setView($smarty);
}

smarty 配置

根据自己喜好配置，注意cache文件夹的写入权限

smarty.left_delimiter   = "<{"
smarty.right_delimiter  = "}>"
smarty.template_dir     = APP_PATH "/application/views/"
smarty.compile_dir      = APP_PATH "/application/cache/compile"
smarty.cache_dir        = APP_PATH "/application/cache/"

smarty.caching          = 0