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ymww_backend/addons/shopro/library/Tree.php

230 lines
6.1 KiB

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