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<?php
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namespace com;
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/**
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* 分类管理
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*/
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class Category {
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private $model; //分类的数据表模型
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private $rawList = array(); //原始的分类数据
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private $formatList = array(); //格式化后的分类
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private $error = ""; //错误信息
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private $icon = array('', '', ''); //格式化的字符
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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
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/**
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* 构造函数,对象初始化
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* @param array,object $model 数组或对象,基于TP5.0的数据表模型名称,若不采用TP,可传递空值。
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* @param array $field 字段映射,分类cid,上级分类fid,分类名称,格式化后分类名称fullname
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*/
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public function __construct($model = '', $fields = array()) {
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if (is_string($model) && (!empty($model))) {
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if (!$this->model = db($model))
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$this->error = $model . "模型不存在!";
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}
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if (is_object($model))
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$this->model = &$model;
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$this->fields['cid'] = $fields['0'] ? $fields['0'] : 'cid';
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$this->fields['fid'] = $fields['1'] ? $fields['1'] : 'fid';
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$this->fields['name'] = $fields['2'] ? $fields['2'] : 'name';
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$this->fields['fullname'] = $fields['3'] ? $fields['3'] : 'fullname';
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}
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/**
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* 获取分类信息数据
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* @param array,string $condition 查询条件
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* @param string $orderby 排序
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*/
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private function _findAllCat($condition, $orderby = NULL) {
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$this->rawList = empty($orderby) ? $this->model->where($condition)->select() : $this->model->where($condition)->order($orderby)->select();
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}
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/**
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* 返回给定上级分类$fid的所有同一级子分类
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* @param int $fid 传入要查询的fid
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* @return array 返回结构信息
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*/
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public function getChild($fid) {
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$childs = array();
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foreach ($this->rawList as $Category) {
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if ($Category[$this->fields['fid']] == $fid)
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$childs[] = $Category;
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}
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return $childs;
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}
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/**
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* 递归格式化分类前的字符
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* @param int $cid 分类cid
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* @param string $space
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*/
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private function _searchList($cid = 0, $space = "",$level=1,$p_name='') {
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$childs = $this->getChild($cid);
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//下级分类的数组
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//如果没下级分类,结束递归
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if (!($n = count($childs)))
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return;
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$m = 1;
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//循环所有的下级分类
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for ($i = 0; $i < $n; $i++) {
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$pad = '';
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$childs[$i]['level'] = $level;
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$childs[$i]['label'] = $childs[$i]['name'];
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$childs[$i]['structure_id'] = $childs[$i]['id'];
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$this->formatList[] = $childs[$i];
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$this->_searchList($childs[$i][$this->fields['cid']], $space . $pad . " ",$level+1,$childs[$i]['else']);//递归下一级分类
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$m++;
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}
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}
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/**
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* 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
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* @param array,string $condition 条件
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* @param int $cid 起始分类
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* @param string $orderby 排序
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* @return array 返回结构信息
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*/
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public function getList($condition = NULL, $cid = 0, $orderby = NULL) {
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unset($this->rawList, $this->formatList);
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$this->_findAllCat($condition, $orderby, $orderby);
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$this->_searchList($cid);
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return $this->formatList? $this->formatList: [];
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}
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/**
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* 获取结构
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* @param array $data 二维数组数据
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* @param int $cid 起始分类
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* @return array 递归格式化分类数组
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*/
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public function getTree($data, $cid = 0) {
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unset($this->rawList, $this->formatList);
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$this->rawList = $data;
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$this->_searchList($cid);
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return $this->formatList;
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}
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/**
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* 获取错误信息
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* @return string 错误信息字符串
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*/
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public function getError() {
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return $this->error;
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}
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/**
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* 检查分类参数$cid,是否为空
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* @param int $cid 起始分类
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* @return boolean 递归格式化分类数组
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*/
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private function _checkCatID($cid) {
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if (intval($cid)) {
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return true;
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} else {
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$this->error = "参数分类ID为空或者无效!";
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return false;
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}
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}
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/**
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* 检查分类参数$cid,是否为空
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* @param int $cid 分类cid
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*/
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private function _searchPath($cid) {
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//检查参数
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if (!$this->_checkCatID($cid))
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return false;
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$rs = $this->model->find($cid); //初始化对象,查找上级Id;
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$this->formatList[] = $rs; //保存结果
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$this->_searchPath($rs[$this->fields['fid']]);
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}
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/**
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* 查询给定分类cid的路径
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* @param int $cid 分类cid
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* @return array 数组
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*/
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public function getPath($cid) {
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unset($this->rawList, $this->formatList);
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$this->_searchPath($cid); //查询分类路径
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return array_reverse($this->formatList);
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}
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/**
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* 添加分类
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* @param array $data 一维数组,要添加的数据,$data需要包含上级分类ID。
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* @return boolean 添加成功,返回相应的分类ID,添加失败,返回FALSE;
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*/
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public function add($data) {
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if (empty($data))
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return false;
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return $this->model->data($data)->add();
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}
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/**
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* 修改分类
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* @param array $data 一维数组,$data需要包含要修改的分类cid。
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* @return boolean 组修改成功,返回相应的分类ID,修改失败,返回FALSE;
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*/
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public function edit($data) {
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if (empty($data))
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return false;
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return $this->model->data($data)->save();
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}
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/**
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* 删除分类
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* @param int $cid 分类cid
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* @return boolean 删除成功,返回相应的分类ID,删除失败,返回FALSE
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*/
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public function del($cid) {
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$cid = intval($cid);
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if (empty($cid))
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return false;
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$conditon[$this->fields['cid']] = $cid;
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return $this->model->where($conditon)->delete();
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}
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}
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?>
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