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CI框架传递数组到视图View层

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Release: 2016-06-13 09:38:12
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视图是用户用户能看到你的网站的所有。 他们使用一个统一的接口, 而且可以根据需要进行修改。 MVC 的好处之一是你分开了表示层和逻辑层, 一切都显得很干净。视图实际上是一组包含有你的内容的HTML结构。结构中有各种元素,如颜色,字体,文字布局等; 不过视图不关心这些,它要做的只是取来内容,显示出来。

一般我们在控制器中这样定义:

function index() {
   $data['mytitle']    = "A website monitoring tool";
   $data['mytext']    = "This website helps you to keep track of the other websites you control.";
   
   $this->load->view('basic_view',$data);
}
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我们把$data数组作为$this->load->view()的第二个叁数,在视图名称之后。视图接收到$data数组后,使用PHP函数extract()把数组中的每个元素转换成内存变量,数组的键名即为变量名,值为变量内所包含的值。这些变量的值能直接被视图引用:

<html>
<head>
</head>
<body>
  <h1 class='test'><?php echo $mytitle; ?></h1>
  <p class='test'><?php echo $mytext; ?></p>
</body>
</html>
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虽然你只能传送一个变量到视图, 但是通过建立数组,你能把大量变量整洁地传入视图。它似乎复杂, 但是实际上是一种紧凑和优秀的信息传输方式。

如果传递过来的数组是包含多个数据,那么就需要遍历,操作一般如下。先是控制器:

	$data["notice"] =array('aaa','bbb');
	 $this->load->view('api/notice',$data);
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视图中解析:

<?php
	if(count($notice)>0){
        foreach($notice as $key =>$value ){
?>
    		<a href="#"><?php echo $value?></a>
<?php
    	}
?>
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再说下二维数组的传递与遍历问题。下面的程序实现遍历某个目录下的文件。

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Data extends CI_Controller {
	public function index()
	{
		$this->load->helper('url');
		
		$data['page_title'] = '帮客之家';
		$data['pre_url'] = 'application/views/default/';
		
     	$this->load->view('default/header', $data);
      	$this->load->view('default/index', $data);
      	$this->load->view('default/footer');
		//$this->load->view('index');
	}
	
	public function gdnews()
	{
		$this->load->helper('url');
		$arr = array();
		
		function tree($directory) 
		{ 
			$mydir = dir($directory); 
			while($file = $mydir->read())
			{ 
				// 是目录的话
				if((is_dir("$directory/$file")) AND ($file!=".") AND ($file!="..")) 
				{
					//echo "<li><font color=\"#ff00cc\"><b>$file</b></font></li>\n"; 
					//tree("$directory/$file"); 
				} 
				// 不是目录
				else 
				{
					$arr['name'][] = @iconv('GB2312','UTF-8',$file);
					$arr['time'][] = @iconv('GB2312','UTF-8',date('Y-m-d H:i:s', filemtime($file)));
				}
			}
			$mydir->close(); 
			return $arr;
		}
		$dir = "datas/gdnews/";
		$arr = tree($dir);
		$data['files'] = $arr;
		
		$data['page_title'] = '帮客之家' ;
		$data['dir'] = $dir;
		
		$this->load->view('default/header', $data);
     	$this->load->view('default/data', $data);
      	$this->load->view('default/footer');
	}
}
?>
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在视图中这么输出就可以:

<?php
    if(count($files)>0)
	{
        foreach($files['name'] as $key =>$value ){
?>
               		<p class="postmetadata">
						<span style="color:#333;"><?=$files['time'][$key]?></span> <?=$files['name'][$key]?>
						<span><a href="<?=base_url().$dir.$files['name'][$key]?>" target="_blank">查看</a> <a href="#">删除</a></span>
					</p>
<?php
		}
	}
?>
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