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HomeBackend DevelopmentPHP TutorialCodeIgniter模板引擎使用实例详解

CodeIgniter模板引擎使用实例详解

Jun 06, 2016 pm 08:10 PM
codeignitertemplate engine

这篇文章主要介绍了CodeIgniter模板引擎使用实例,需要的朋友可以参考下

一、示例:

通常在使用codeigniter的时候经常使用这样的方式载入:

$this->load->view('about', $data);

通过这个类库,可以将一个视图载入到这个模板中:

$this->template->load('template', 'about', $data);

这里将视图about.php载入到template模板文件中。

二、安装

下载ci_template_library.zip
解压后将Template.php放到application/libraries应用类库目录中;
应用程序启动自动加载application/config/autoload.php;

三、创建一个模板文件application/views/template.php
模板中的代码如下:

<html>
<body>
  <p id="contents"><?= $contents ?></p>
  <p id="footer">Copyright 2008</p>
</body>
</html>

$contents是你在控制器中显示需要插入的内容。

四、创建一个视图application/views/about.php
添加如下代码:

<h1>About</h1>
<p>I&#39;m so human!</p>

在模板引擎中载入视图
在你的控制器中可以使用

$this->template->load(&#39;template&#39;, &#39;about&#39;);

这个模板引擎工作流程:

视图被载入到一个变量中,这个变量会被载入到模板中去

var $template_data = array();
 
function set($name, $value)
{
 $this->template_data[$name] = $value;
}
 
function load($template = &#39;&#39;, $view = &#39;&#39; , $view_data = array(), $return = FALSE)
{        
 $this->CI =& get_instance();
 $this->set(&#39;contents&#39;, $this->CI->load->view($view, $view_data, TRUE)); 
 return $this->CI->load->view($template, $this->template_data, $return);
}

五、技巧总结

高级技巧1:模板中更简单的短标记

例子:你如果需要在页面中显示标题。
那么在HTML的头部views/template.php增加:

<head>
  <title><?= $title ?></title>
</head>

然后直接在控制器中设置:

$this->template->set(&#39;title&#39;, &#39;About me&#39;);

高级技巧2:高亮显示当前导航

导航通常是被用于在模板中,一个体验好的导航应该告诉用户当前所处的位置分类是什么。

定义你的导航项目:

引入application/libraries/Template.php,然后在控制器中增加:

$this->set(&#39;nav_list&#39;, array(&#39;Home&#39;, &#39;Photos&#39;, &#39;About&#39;, &#39;Contact&#39;));

更新你的模板:

在application/views/template.php中增加:

<ul class="navigation">
 <?php foreach($nav_list as $i => $nav_item): ?>
 <li class="<?= ($nav == $nav_item ? &#39;selected&#39; : &#39;&#39;)?>">
 <?= anchor($nav_item, $nav_item) ?>
 </li>
 <?php endforeach ?>
</ul>

这里用到了anchor函数,需要在自动加载配置中增加相关的小助手:

$autoload[&#39;helper&#39;] = array(&#39;url&#39;);

更新你的控制器:

增加:

$this->template->set(&#39;nav&#39;, &#39;About&#39;);

需要注意:
1·如果所有的导航都在一个控制器中,你可以在析构函数中增加通用的导航代码;
2·定义好当前导航的样式,例如:#navigation .selected

高级技巧3:多模板

最简单处理多个模板,可以在libraries/Template.php定义多个新的方法来替换已经存在的内容,第二个高级技巧使用自定义的方法:

function load_main($view = '', $view_data = array(), $return = FALSE)
{
 $this->set(&#39;nav_list&#39;, array(&#39;Home&#39;, &#39;Photos&#39;, &#39;About&#39;, &#39;Contact&#39;));
 $this->load('template', $view, $view_data, $return);
}

将代码粘贴到控制器中

$this->template->set(&#39;nav&#39;, &#39;About&#39;);
$this->template->set(&#39;title&#39;, &#39;About me&#39;);
$this->template->load_main('about');

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