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89 lines
2.4 KiB
PHTML
89 lines
2.4 KiB
PHTML
2 years ago
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<?php
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namespace Common\Model;
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/**
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* 生成多层树状下拉选框的工具模型
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*/
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class TreeModel {
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/**
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* 把返回的数据集转换成Tree
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* @access public
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* @param array $list 要转换的数据集
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* @param string $pid parent标记字段
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* @param string $level level标记字段
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* @return array
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*/
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public function toTree($list=null, $pk='id',$pid = 'pid',$child = '_child'){
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if(null === $list) {
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// 默认直接取查询返回的结果集合
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$list = &$this->dataList;
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}
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// 创建Tree
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$tree = array();
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if(is_array($list)) {
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// 创建基于主键的数组引用
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$refer = array();
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foreach ($list as $key => $data) {
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$_key = is_object($data)?$data->$pk:$data[$pk];
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$refer[$_key] =& $list[$key];
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}
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foreach ($list as $key => $data) {
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// 判断是否存在parent
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$parentId = is_object($data)?$data->$pid:$data[$pid];
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$is_exist_pid = false;
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foreach($refer as $k=>$v){
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if($parentId==$k){
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$is_exist_pid = true;
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break;
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}
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}
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if ($is_exist_pid) {
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if (isset($refer[$parentId])) {
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$parent =& $refer[$parentId];
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$parent[$child][] =& $list[$key];
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}
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} else {
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$tree[] =& $list[$key];
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}
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}
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}
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return $tree;
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}
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/**
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* 将格式数组转换为树
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*
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* @param array $list
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* @param integer $level 进行递归时传递用的参数
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*/
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private $formatTree; //用于树型数组完成递归格式的全局变量
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private function _toFormatTree($list,$level=0,$title = 'title') {
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foreach($list as $key=>$val){
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$tmp_str=str_repeat(" ",$level*2);
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$tmp_str.="└";
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$val['level'] = $level;
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$val['title_show'] =$level==0?$val[$title]." ":$tmp_str.$val[$title]." ";
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// $val['title_show'] = $val['id'].'|'.$level.'级|'.$val['title_show'];
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if(!array_key_exists('_child',$val)){
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array_push($this->formatTree,$val);
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}else{
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$tmp_ary = $val['_child'];
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unset($val['_child']);
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array_push($this->formatTree,$val);
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$this->_toFormatTree($tmp_ary,$level+1,$title); //进行下一层递归
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}
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}
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return;
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}
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public function toFormatTree($list,$title = 'title',$pk='id',$pid = 'pid',$root = 0){
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$list = list_to_tree($list,$pk,$pid,'_child',$root);
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$this->formatTree = array();
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$this->_toFormatTree($list,0,$title);
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return $this->formatTree;
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}
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}
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?>
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