Question

我正在玩microFramework Slim + Twig模板引擎。但实际上是在render方法中传递一个数组。

SomeOne帮助我解决错误。

使用XAMPP在我的本地环境中运行

以下是我在index.php中的代码

   <?php

/* Require and initialize Slim and Twig */
require 'Slim/Slim.php';
\Slim\Slim::registerAutoloader();
require 'Views/Twig/lib/Twig/Autoloader.php';
Twig_Autoloader::register();

$app = new \Slim\Slim(array(
    'view'              =>  new \Slim\Extras\Views\Twig(),
    'templates.path'    =>  './Templates'
));

/* Application routes */
$app->get('/', function () use($app) {
    $pageTitle = 'hello world';
    $body = 'sup world';   
    $app->render('index.php',array('title' => $pageTitle, 'body' => $body));
});

/* Run the application */
$app->run();

以下是我得到的错误

    Slim Application Error

The application could not run because of the following error:
Details
Type: ErrorException
Code: 4096
Message: Argument 1 passed to Twig_Template::render() must be an array, object given, called in C:\xampp\htdocs\app\Slim\Extras\Views\Twig.php on line 99 and defined
File: C:\xampp\htdocs\app\Views\Twig\lib\Twig\Template.php
Line: 244
Trace

Answer 1

不幸的是我必须回答我的问题。

我刚刚在Twig.php中做了一点点破解（在苗条的附加内容中）并引入了一个名为ObjectToArray的新函数，现在它可以正常工作

function objectToArray( $object ) {
            $array=array();
    foreach($object as $member=>$data)
    {
        $array[$member]=$data;
    }
    return $array;
    }

所以我的自定义Twig.php文件看起来像这样

<?php
/**
 * Slim - a micro PHP 5 framework
 *
 * @author      Josh Lockhart
 * @link        http://www.slimframework.com
 * @copyright   2011 Josh Lockhart
 *
 * MIT LICENSE
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
namespace Slim\Extras\Views;

/**
 * TwigView
 *
 * The TwigView is a custom View class that renders templates using the Twig
 * template language (http://www.twig-project.org/).
 *
 * Two fields that you, the developer, will need to change are:
 * - twigDirectory
 * - twigOptions
 */
class Twig extends \Slim\View
{
    /**
     * @var string The path to the Twig code directory WITHOUT the trailing slash
     */
    public static $twigDirectory = null;

    /**
     * @var array Paths to directories to attempt to load Twig template from
     */
    public static $twigTemplateDirs = array();

    /**
     * @var array The options for the Twig environment, see
     * http://www.twig-project.org/book/03-Twig-for-Developers
     */
    public static $twigOptions = array();

    /**
     * @var TwigExtension The Twig extensions you want to load
     */
    public static $twigExtensions = array();

    /**
     * @var TwigEnvironment The Twig environment for rendering templates.
     */
    private $twigEnvironment = null;

    /**
     * Get a list of template directories
     *
     * Returns an array of templates defined by self::$twigTemplateDirs, falls
     * back to Slim\View's built-in getTemplatesDirectory method.
     *
     * @return array
     **/
    private function getTemplateDirs()
    {
        if (empty(self::$twigTemplateDirs)) {
            return array($this->getTemplatesDirectory());
        }
        return self::$twigTemplateDirs;
    }

    /**
     * Render Twig Template
     *
     * This method will output the rendered template content
     *
     * @param   string $template The path to the Twig template, relative to the Twig templates directory.
     * @return  void
     */
    public function render($template)
    {
        $env = $this->getEnvironment();
        $template = $env->loadTemplate($template);
        return $template->render($this->objectToArray($this->data));
    }

    /**
     * Creates new TwigEnvironment if it doesn't already exist, and returns it.
     *
     * @return Twig_Environment
     */
    public function getEnvironment()
    {
        if (!$this->twigEnvironment) {
            // Check for Composer Package Autoloader class loading
            if (!class_exists('\Twig_Autoloader')) {
                require_once self::$twigDirectory . '/Autoloader.php';
            }

            \Twig_Autoloader::register();
            $loader = new \Twig_Loader_Filesystem($this->getTemplateDirs());
            $this->twigEnvironment = new \Twig_Environment(
                $loader,
                self::$twigOptions
            );

            // Check for Composer Package Autoloader class loading
            if (!class_exists('\Twig_Extensions_Autoloader')) {
                $extension_autoloader = dirname(__FILE__) . '/Extension/TwigAutoloader.php';
                if (file_exists($extension_autoloader)) require_once $extension_autoloader;
            }

            if (class_exists('\Twig_Extensions_Autoloader')) {
                \Twig_Extensions_Autoloader::register();

                foreach (self::$twigExtensions as $ext) {
                    $extension = is_object($ext) ? $ext : new $ext;
                    $this->twigEnvironment->addExtension($extension);
                }
            }
        }

        return $this->twigEnvironment;
    }

    /**
     * Converts PHP objects into Array.
     *
     * @return array
     */
    private function objectToArray( $object ) {
                $array=array();
        foreach($object as $member=>$data)
        {
            $array[$member]=$data;
        }
        return $array;
        }
}

我认为如果没有上述修改，它应该可行。

如果您确实找到了更好的解决方案，请告诉我

Answer 2

您的解决方案是一种开销。更好的方法是传递$this->all()，它将返回一组set的键值数据，作为$template->render()方法的参数。

public function render($template)
{
    $env = $this->getEnvironment();
    $template = $env->loadTemplate($template);

    return $template->render($this->all());
}

四月之前$this->data是一个数组，但现在它是一个Set，这就是问题发生的原因。

Answer 3

这样可以解决问题！

function objectToArray($object){
    if (!is_object($object) && !is_array($object)) {
        return $object;
    }
    if (is_object($object)) {
        $object = get_object_vars($object);
    }
    return array_map('objectToArray', $object);
}

渲染时Slim Twig数组转换错误

3 个答案: