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Introduction to the import method of thinkPHP2.1 custom tag library
- 不言Original
- 2018-07-03 16:48:581446browse
This article mainly introduces the import method of thinkPHP2.1 custom tag library, and analyzes in detail the definition, use and automatic import related techniques of thinkPHP tag library. Friends in need can refer to the following
This article is detailed Describes the import method of thinkPHP2.1 custom tag library. I share it with you for your reference. The details are as follows:
TP’s manual seems to be unable to keep up with the pace. It only has a few words about custom tags. After fumbling for a long time, I finally imported the custom tags. My experience As follows:
1. Situation: Create a new custom tag library class: @.Mylib.Tag.TagLibTest — Those who understand TP should know the path represented by this
Use Tag demo file under Examples
<?php
// +-----------------------------------------------------------
// | ThinkPHP
// +------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +------------------------------------------------------------
// | Author: liu21st <liu21st @gmail.com="">
// +------------------------------------------------------------
// $Id$
import('TagLib');
class TagLibArticle extends TagLib{
// 标签定义
protected $tags = array(
// 标签定义：
//attr 属性列表 close 是否闭合（0 或者1 默认1） alias 标签别名 level 嵌套层次
'article'=>array('attr'=>'name,field,limit,order,where,sql,key,mod','level'=>3),
);
//定义查询数据库标签
public function _article($attr,$content) {
$tag = $this->parseXmlAttr($attr,'article');
$result = !empty($tag['result'])?$tag['result']:'article'; //定义数据查询的结果存放变量
$key = !empty($tag['key'])?$tag['key']:'i';
$mod = isset($tag['mod'])?$tag['mod']:'2';
if ($tag['name'])
{ //根据用户输入的值拼接查询条件
$sql = "M('{$tag['name']}')->";
$sql .= ($tag['field'])?"field({$tag['field']})->":'';
$sql .= ($tag['order'])?"order({$tag['order']})->":'';
$sql .= ($tag['where'])?"where({$tag['where']})->":'';
$sql .= "select()";
}else{
if (!$tag['sql']) return ''; //排除没有指定model名称，也没有指定sql语句的情况
$sql .= "M()->query('{$tag['sql']}')";
}
//下面拼接输出语句
$parsestr = '<?php $_result='.$sql.'; if ($_result): $'.$key.'=0;';
$parsestr .= 'foreach($_result as $key=>$'.$result.'):';
$parsestr .= '++$'.$key.';$mod = ($'.$key.' % '.$mod.' );?>';
$parsestr .= $content;//解析在article标签中的内容
$parsestr .= '<?php endforeach; endif;?>';
return $parsestr;
}
}
?></liu21st>
Then create a new taglibs.php file in the Conf directory under the project, content:
<?php return array( 'article'=>'@.TagLib.TagLibarticle', ); ?>
This way you can use it in the template:
<tagLib name="article" />
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>ThinkPHP示例：自定义标签</title>
<link rel='stylesheet' type='text/css' href='__PUBLIC__/Css/common.css'>
</head>
<body>
<p class="main">
<h2>ThinkPHP示例之自定义标签：定义查询数据库的标签</h2>
本示例定义一个查询数据库的标签，可以使模板直接按条件查找指定的数据库并列表显示，本例仅是展示自定义标签的方便之处，可以进一步扩充和完善,打造属于自已的标签体系
<table cellpadding=2 cellspacing=2>
<thead>
<tr>
<td class="tLeft" width="8%">序列</td><td class="tLeft" width="12%">标题</td><td>内容</td>
</tr>
</thead>
<article:article name="form" limit="10">
<tr>
<td>{$article.id}</td>
<td>{$article.title}</td>
<td>{$article.content}</td>
</tr>
</article:article>
<tr>
<td colspan='3'>
<hr> 示例源码<br/>控制器自定义标签类<br/> <php>highlight_file(LIB_PATH.'TagLib/TagLibarticle.class.php');</php></td>
</tr>
</table>
</p>
</body>
</html>
This is a very simple situation, but my idea is to ask myself The defined tag library can be automatically imported, so there is no need to add tags like b62b76393bf80bcc9a22131e73e6ddfa in the first line of each template.
It's just that this has encountered a little problem
2. Automatically import the custom tag library
Add in the config.php file:
'TAGLIB_PRE_LOAD' => 'article' ,
Clear the cache, prompting the error "Instantiate a non-existent class!" ;
I searched around the TP official forum for a few times and found that there is only one way to solve it: import using aliases, that is, in the TP framework Add the import path under commonn/alias.php:
Such as:
'TagLibArticle' => THINK_PATH.'/Lib/Think/Template/TagLib/TagLibArticle.class.php',
There are also some solutions to modify the source code of the Template class, which are not easy to use - because usually I don’t want to worry about a small problem. Modify the core.
So I thought of the import of Action:
Add the import to your own project base class BaseAction.class.php:
function _initialize() {
import("@.Mylibs.Tag.TagLibArticle");
}
Refresh cache, problem solved...
This solution is simple and easy to use.
Supplement:
Use TP’s automatic Loading configuration is faster:
'APP_AUTOLOAD_PATH'=> 'Think.Util.,@.Mylibs.Tag.',
Final solution:
1. Create Mylibs.Tag.TagLibTest — Custom Tag library
2. Configuration:
'APP_AUTOLOAD_PATH'=> 'Think.Util.,@.Mylibs.Tag.', 'TAGLIB_PRE_LOAD' => 'test' ,
It can be used normally after deleting the cache.
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