无限极分类在做项目中经常会用到,无限极分类的实现方法也多种实现形式,下面我分享一个基于thinkphp3.0的无极限分类,同时也支持普通传值的无极限分类。说明该类很久以前我在互联网上找到是,原编写者信息没有,这里我只是在原有的基础上做了些修改和格式化。
分类表需包含3个基本字段:cid,fid,name 即:分类cid,父级fid,分类名称。
表结构:
CREATE TABLE `think_category` (
`cid` int(11) NOT NULL AUTO_INCREMENT,
`fid` int(11) DEFAULT NULL,
`name` varchar(30) DEFAULT NULL
PRIMARY KEY (`cid`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
有两种使用方法:
第一种是基于THINKPHP3.0的使用:下载后将Category.class.php放到当前项目的ORG目录下(其他的目录也可只要能正常引用)
import("@.ORG.Category");
$cat = new Category('Category', array('cid', 'fid', 'name', 'fullname'));
$s = $cat->getList(); //获取分类结构
$s = $cat->getList('', 1); //获取fid=1的子分类结构
$s = $cat->getList($condition, 1); //$condition为查询条件,获取fid=1的子分类结构
$s = $cat->getPath(3); //获取分类id=3的路径
$data = array("fid" => 0, "name" => "新分类名称");
$s = $cat->add($data); //添加分类,$data需要包含上级分类fid
$data = array("cid" => 2, "name" => "修改后分类名称");
$s = $cat->edit($data); //修改分类,$data需要包含分类ID
$s = $cat->del(10); //删除分类id=10的分类
第二种使用方法不需要使用TP的支持,但是数据结构需一样。
分类类文件Category.class.php内容:
<?php
/**
+------------------------------------------------------------------------------
* 分类管理
+------------------------------------------------------------------------------
*/
class Category {
private $model; //分类的数据表模型
private $rawList = array(); //原始的分类数据
private $formatList = array(); //格式化后的分类
private $error = ""; //错误信息
private $icon = array('  │', '  ├ ', '  └ '); //格式化的字符
private $fields = array(); //字段映射,分类id,上级分类fid,分类名称name,格式化后分类名称fullname
/**
+----------------------------------------------------------
* 构造函数,对象初始化
+----------------------------------------------------------
* @param array,object $model 数组或对象,基于TP3.0的数据表模型名称,若不采用TP,可传递空值。
* @param array $field 字段映射,分类cid,上级分类fid,分类名称,格式化后分类名称fullname
+----------------------------------------------------------
*/
public function __construct($model = '', $fields = array()) {
if (is_string($model) && (!empty($model))) {
if (!$this->model = D($model))
$this->error = $model . "模型不存在!";
}
if (is_object($model))
$this->model = &$model;
$this->fields['cid'] = $fields['0'] ? $fields['0'] : 'cid';
$this->fields['fid'] = $fields['1'] ? $fields['1'] : 'fid';
$this->fields['name'] = $fields['2'] ? $fields['2'] : 'name';
$this->fields['fullname'] = $fields['3'] ? $fields['3'] : 'fullname';
}
/**
+----------------------------------------------------------
* 获取分类信息数据
+----------------------------------------------------------
* @param array,string $condition 查询条件
* @param string $orderby 排序
+----------------------------------------------------------
*/
private function _findAllCat($condition, $orderby = NULL) {
$this->rawList = empty($orderby) ? $this->model->where($condition)->select() : $this->model->where($condition)->order($orderby)->select();
}
/**
+----------------------------------------------------------
* 返回给定上级分类$fid的所有同一级子分类
+----------------------------------------------------------
* @param int $fid 传入要查询的fid
+----------------------------------------------------------
* @return array 返回结构信息
+----------------------------------------------------------
*/
public function getChild($fid) {
$childs = array();
foreach ($this->rawList as $Category) {
if ($Category[$this->fields['fid']] == $fid)
$childs[] = $Category;
}
return $childs;
}
/**
+----------------------------------------------------------
* 递归格式化分类前的字符
+----------------------------------------------------------
* @param int $cid 分类cid
* @param string $space
+----------------------------------------------------------
*/
private function _searchList($cid = 0, $space = "") {
$childs = $this->getChild($cid);
//下级分类的数组
//如果没下级分类,结束递归
if (!($n = count($childs)))
return;
$m = 1;
//循环所有的下级分类
for ($i = 0; $i < $n; $i++) {
$pre = "";
$pad = "";
if ($n == $m) {
$pre = $this->icon[2];
} else {
$pre = $this->icon[1];
$pad = $space ? $this->icon[0] : "";
}
$childs[$i][$this->fields['fullname']] = ($space ? $space . $pre : "") . $childs[$i][$this->fields['name']];
$this->formatList[] = $childs[$i];
$this->_searchList($childs[$i][$this->fields['cid']], $space . $pad . " "); //递归下一级分类
$m++;
}
}
/**
+----------------------------------------------------------
* 不采用数据模型时,可以从外部传递数据,得到递归格式化分类
+----------------------------------------------------------
* @param array,string $condition 条件
* @param int $cid 起始分类
* @param string $orderby 排序
+----------------------------------------------------------
* @return array 返回结构信息
+----------------------------------------------------------
*/
public function getList($condition = NULL, $cid = 0, $orderby = NULL) {
unset($this->rawList, $this->formatList);
$this->_findAllCat($condition, $orderby, $orderby);
$this->_searchList($cid);
return $this->formatList;
}
/**
+----------------------------------------------------------
* 获取结构
+----------------------------------------------------------
* @param array $data 二维数组数据
* @param int $cid 起始分类
+----------------------------------------------------------
* @return array 递归格式化分类数组
+----------------------------------------------------------
*/
public function getTree($data, $cid = 0) {
unset($this->rawList, $this->formatList);
$this->rawList = $data;
$this->_searchList($cid);
return $this->formatList;
}
/**
+----------------------------------------------------------
* 获取错误信息
+----------------------------------------------------------
* @return string 错误信息字符串
+----------------------------------------------------------
*/
public function getError() {
return $this->error;
}
/**
+----------------------------------------------------------
* 检查分类参数$cid,是否为空
+----------------------------------------------------------
* @param int $cid 起始分类
+----------------------------------------------------------
* @return boolean 递归格式化分类数组
+----------------------------------------------------------
*/
private function _checkCatID($cid) {
if (intval($cid)) {
return true;
} else {
$this->error = "参数分类ID为空或者无效!";
return false;
}
}
/**
+----------------------------------------------------------
* 检查分类参数$cid,是否为空
+----------------------------------------------------------
* @param int $cid 分类cid
+----------------------------------------------------------
*/
private function _searchPath($cid) {
//检查参数
if (!$this->_checkCatID($cid))
return false;
$rs = $this->model->find($cid); //初始化对象,查找上级Id;
$this->formatList[] = $rs; //保存结果
$this->_searchPath($rs[$this->fields['fid']]);
}
/**
+----------------------------------------------------------
* 查询给定分类cid的路径
+----------------------------------------------------------
* @param int $cid 分类cid
+----------------------------------------------------------
* @return array 数组
+----------------------------------------------------------
*/
public function getPath($cid) {
unset($this->rawList, $this->formatList);
$this->_searchPath($cid); //查询分类路径
return array_reverse($this->formatList);
}
/**
+----------------------------------------------------------
* 添加分类
+----------------------------------------------------------
* @param array $data 一维数组,要添加的数据,$data需要包含上级分类ID。
+----------------------------------------------------------
* @return boolean 添加成功,返回相应的分类ID,添加失败,返回FALSE;
+----------------------------------------------------------
*/
public function add($data) {
if (empty($data))
return false;
return $this->model->data($data)->add();
}
/**
+----------------------------------------------------------
* 修改分类
+----------------------------------------------------------
* @param array $data 一维数组,$data需要包含要修改的分类cid。
+----------------------------------------------------------
* @return boolean 组修改成功,返回相应的分类ID,修改失败,返回FALSE;
+----------------------------------------------------------
*/
public function edit($data) {
if (empty($data))
return false;
return $this->model->data($data)->save();
}
/**
+----------------------------------------------------------
* 删除分类
+----------------------------------------------------------
* @param int $cid 分类cid
+----------------------------------------------------------
* @return boolean 删除成功,返回相应的分类ID,删除失败,返回FALSE
+----------------------------------------------------------
*/
public function del($cid) {
$cid = intval($cid);
if (empty($cid))
return false;
$conditon[$this->fields['cid']] = $cid;
return $this->model->where($conditon)->delete();
}
}
?>
这个编辑器太不给力了,编辑框又这么小,详细的使用方法和测试包去我的blog下载吧,
http://blog.51edm.org/post/78