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231 lines
5.9 KiB
231 lines
5.9 KiB
10 months ago
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<?php
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declare(strict_types=1);
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namespace addons\shopro\library;
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use think\model\Collection;
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class Tree
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{
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protected $model = null;
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public function __construct($model)
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{
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$this->model = $model;
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}
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/**
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* 获取递归树
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*
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* @param integer|array|Collection $items 可以传入某个id 查询这个id的下级树,也可以传一个查询列表结果,将获取这个列表的所有的下级 树
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* @param \Closure $resultCb 用来处理每一次查询的结果 比如要取出树中的所有 name
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* @return Collection
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*/
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public function getTree($items = 0, \Closure $resultCb = null)
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{
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if (!is_array($items) && !$items instanceof Collection) {
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$items = $this->getQuery()->where('parent_id', $items)->select();
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$resultCb && $items = $resultCb($items);
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}
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foreach ($items as $key => &$item) {
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$child = $this->getTree($item->id, $resultCb);
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if ($child) {
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$item->children = $child;
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}
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}
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return $items;
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}
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/**
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* 获取递归树(包含自身)
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*
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* @param integer $id
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* @param \Closure $resultCb 用来处理每一次查询的结果 比如要取出树中的所有 name
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* @return Collection
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*/
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public function getChildren($id, \Closure $resultCb = null)
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{
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$self = $this->getQuery()->where('id', $id)->select();
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if(!$self) {
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error_stop('未找到数据');
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}
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$items = $this->getQuery()->where('parent_id', $id)->select();
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$resultCb && $items = $resultCb($items);
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foreach ($items as $key => &$item) {
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$child = $this->getTree($item->id, $resultCb);
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if ($child) {
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$item->children = $child;
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}
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}
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$self[0]->children = $items;
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return $self;
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}
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/**
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* 检测id 是不是自己的下级
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*
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* @param [type] $parent_id
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* @param [type] $id
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* @return void
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*/
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public function checkParent($parent_id, $id)
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{
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if ($parent_id == $id) {
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error_stop('当前上级不能是自己');
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}
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$childIds = $this->getChildIds($id);
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if (in_array($parent_id, $childIds)) {
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error_stop('当前上级不能是自己的下级');
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}
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return true;
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}
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/**
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* 获取当前对象所属级别
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*
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* @param [type] $object
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* @return void
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*/
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public function getLevel($object)
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{
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$parentIds = $this->getParentFields($object, 'id');
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return count($parentIds);
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}
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/**
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* 缓存递归获取当前对象的上级 指定字段
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*
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* @param \think\Model|int $id
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* @param boolean $self 是否包含自己
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* @return array
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*/
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public function getParentFields($item, $field = 'id', $self = true)
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{
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if (!$item instanceof \think\Model) {
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$item = $this->getQuery()->find($item);
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if (!$item) {
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return [];
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}
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}
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// 判断缓存
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$cacheKey = 'object-' . $this->getTable() . '-' . $item->id . '-' . $field . '-parent-ids';
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$objectIds = cache($cacheKey);
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if (!$objectIds) {
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$objectIds = array_reverse($this->recursionGetParentFields($item, $field));
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if ($self) {
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$objectIds[] = $item[$field]; // 加上自己
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}
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// 缓存暂时注释,如果需要,可以打开,请注意后台更新角色记得清除缓存
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// cache($cacheKey, $objectIds, (600 + mt_rand(0, 300))); // 加入随机秒数,防止一起全部过期
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}
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return $objectIds;
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}
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/**
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* 递归获取所有上级 id
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*/
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private function recursionGetParentFields($item, $field = 'id', $ids = [])
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{
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if ($item->parent_id) {
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$parent = $this->getQuery()->find($item->parent_id);
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if ($parent) {
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$ids[] = $parent[$field];
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return $this->recursionGetParentFields($parent, $field, $ids);
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}
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}
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return $ids;
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}
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/**
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* 缓存递归获取子对象 id
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*
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* @param int $id 要查询的 id
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* @param boolean $self 是否包含自己
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* @return array
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*/
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public function getChildIds($id, $self = true)
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{
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// 判断缓存
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$cacheKey = 'object-' . $this->getTable() . '-' . $id . '-child-ids';
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$objectIds = cache($cacheKey);
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if (!$objectIds) {
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$objectIds = $this->recursionGetChildIds($id, $self);
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// 缓存暂时注释,如果需要,可以打开,请注意后台更新角色记得清除缓存
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// cache($cacheKey, $objectIds, (600 + mt_rand(0, 300))); // 加入随机秒数,防止一起全部过期
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}
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return $objectIds;
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}
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/**
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* 递归获取子分类 id
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*
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*/
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private function recursionGetChildIds($id, $self)
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{
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$ids = $self ? [$id] : [];
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$childrenIds = $this->getQuery()->where(['parent_id' => $id])->column('id');
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if ($childrenIds) {
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foreach ($childrenIds as $v) {
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$grandsonIds = $this->recursionGetChildIds($v, true);
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$ids = array_merge($ids, $grandsonIds);
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}
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}
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return $ids;
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}
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/**
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* 获取当前 查询
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*
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* @return think\model|think\db\Query
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*/
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private function getQuery()
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{
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if ($this->model instanceof \Closure) {
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return ($this->model)();
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}
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return $this->model;
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}
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/**
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* 获取表
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*/
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private function getTable()
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{
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$query = $this->getQuery();
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if ($query instanceof \think\Model) {
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$table_name = $query->getQuery()->getTable();
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} else {
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$table_name = $query->getTable();
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}
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return $table_name;
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}
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}
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