thinkphp3.2.3含有树形结构的无限分类的实现

<?php
namespace CommonHelper;

class Category {

//一维数组
 static public function toLevel($cate, $delimiter = '———', $parent_id = 0, $level = 0) {

 $arr = array();
 foreach ($cate as $v) {
 if ($v['parent_id'] == $parent_id) {
 $v['level'] = $level + 1;
 $v['delimiter'] = str_repeat($delimiter, $level);
 $arr[] = $v;
 $arr = array_merge($arr, self::toLevel($cate, $delimiter, $v['id'], $v['level']));
}
}

 return $arr;

}


//组成多维数组
 static public function toLayer($cate, $name = 'child', $pid = 0){

 $arr = array();
 foreach ($cate as $v) {
 if ($v['pid'] == $pid) {
 $v[$name] = self::toLayer($cate, $name, $v['id']);
 $arr[] = $v;
}
}

 return $arr;
}


 //一维数组(同模型)(model = tablename相同)，删除其他模型的分类
 static public function getLevelOfModel($cate, $tablename = 'article') {

 $arr = array();
 foreach ($cate as $v) {
 if ($v['tablename'] == $tablename) {
 $arr[] = $v;
}
}

 return $arr;

}

//一维数组(同模型)(modelid)，删除其他模型的分类
 static public function getLevelOfModelId($cate, $modelid = 0) {

 $arr = array();
 foreach ($cate as $v) {
 if ($v['modelid'] == $modelid) {
 $arr[] = $v;
}
}

 return $arr;

}

//传递一个子分类ID返回他的所有父级分类
 static public function getParents($cate, $id) {
 $arr = array();
 foreach ($cate as $v) {
 if ($v['id'] == $id) {
 $arr[] = $v;
 $arr = array_merge(self::getParents($cate, $v['pid']), $arr);
}
}
 return $arr;
}

//传递一个子分类ID返回他的同级分类
 static public function getSameCate($cate, $id) {
 $arr = array();
 $self = self::getSelf($cate, $id);
 if (empty($self)) {
 return $arr;
}

 foreach ($cate as $v) {
 if ($v['id'] == $self['pid']) {
 $arr[] = $v;
}
}
 return $arr;
}



//判断分类是否有子分类,返回false,true
 static public function hasChild($cate, $id) {
 $arr = false;
 foreach ($cate as $v) {
 if ($v['pid'] == $id) {
 $arr = true;
 return $arr;
}
}

 return $arr;
}

//传递一个父级分类ID返回所有子分类ID
/**
 *@param $cate 全部分类数组
 *@param $pid 父级ID
 *@param $flag 是否包括父级自己的ID，默认不包括
**/
 static public function getChildsId($cate, $pid, $flag = 0) {
 $arr = array();
 if ($flag) {
 $arr[] = $pid;
}
 foreach ($cate as $v) {
 if ($v['pid'] == $pid) {
 $arr[] = $v['id'];
 $arr = array_merge($arr , self::getChildsId($cate, $v['id']));
}
}

 return $arr;
}


//传递一个父级分类ID返回所有子级分类
 static public function getChilds($cate, $pid) {
 $arr = array();
 foreach ($cate as $v) {
 if ($v['pid'] == $pid) {
 $arr[] = $v;
 $arr = array_merge($arr, self::getChilds($cate, $v['id']));
}
}
 return $arr;
}

//传递一个分类ID返回该分类相当信息
 static public function getSelf($cate, $id) {
 $arr = array();
 foreach ($cate as $v) {
 if ($v['id'] == $id) {
 $arr = $v;
 return $arr;
}
}
 return $arr;
}

//传递一个分类ID返回该分类相当信息
 static public function getSelfByEName($cate, $ename) {
 $arr = array();
 foreach ($cate as $v) {
 if ($v['ename'] == $ename) {
 $arr = $v;
 return $arr;
}
}
 return $arr;
}

}

?>
<?php
namespace AdminController;
use ThinkController;
use CommonHelperCategory;
class CategoryController extends AuthController {
//栏目列表页
 public function index(){
 $category_list = M('category')->order('sort desc')->select();
 $category_list = Category::toLevel($category_list, '    ',0);

 $this->assign('category_list', $category_list);
$this->display('category_list');
}

 //增加 栏目页面
 public function add(){
 $parent_id = I('parent_id', 0);

 $parent_category_info = M('Category')->where(array('id' => $parent_id))->find();

if($parent_category_info){
 $this->assign('parent_id', $parent_id);
 $this->assign('parent_category_info', $parent_category_info);
}


 $model_list = M('Model')->where(array('status' => 1))->order('sort asc')->select();

 $category_list = M('category')->order('sort desc')->select();
 $category_list = Category::toLevel($category_list, '---',0);

 $this->assign('category_list', $category_list);
 $this->assign('action', 'add');
 $this->assign('model_list', $model_list);
$this->display('category_add');
}


//修改栏目
 public function edit(){
 $category_id = I('id');
 $category_info = M('Category')->find($category_id);
 $model_list = M('Model')->order('sort desc')->select();

 $category_list = M('category')->order('sort desc')->select();
 $category_list = Category::toLevel($category_list, '---',0);

 $this->assign('category_list', $category_list);
 $this->assign('action', 'edit');
 $this->assign('category_id', $category_id);
 $this->assign('category_info', $category_info);
 $this->assign('model_list', $model_list);

$this->display('category_add');
}

//保存栏目
 public function save(){
 $Category = D("Category");
 if (!$Category->create()){
 //验证没有通过 输出错误提示信息
 $errormsg = $Category->getError();
$this->error($errormsg);
}else{
 // 验证通过进行其他数据操作
 $id = I('id', 0);

 $data['title'] = I('title', '');
 $data['flag'] = I('flag', '');
 $data['parent_id'] = I('parent_id', 0);
 $data['content'] = I('content', '');
 $data['sort'] = I('sort', 0);
 $data['status'] = I('status', 1);
 $data['is_show'] = I('is_show', 1);
 $data['has_cover'] = I('has_cover', 1);
 $data['cover'] = I('cover', '');

 $category_info = $Category->find($id);
if($category_info){
//更新操作
 $data['update_time'] = time();

 $result = $Category->where(array('id' => $id))->save($data);
 if(false !== $result || 0 !== $result){
 $this->success('栏目更新成功', U('Admin/Category/index'));
}else{
$this->error('栏目更新失败');
}
}else{
 $data['model_id'] = I('model_id', 0);
 $data['model_flag'] = M('Model')->where(array('id' => I('model_id')))->getField('flag');
 $data['add_time'] = time();

//print_r($data);exit;

 $result = $Category->add($data);
if($result){
 $this->success('栏目添加成功', U('Admin/Category/index'));
}else{
$this->error('栏目添加失败');
}
}
}
}

//更新状态
 public function change_status()
{
 $id = I('id');

 $Category = M('Category');
 $category_info = $Category->find($id);
if(!$category_info){
 $this->ajaxReturn(array('info' => '该栏目不存在'));
}else{
if($category_info['status']){
 $status = 0;
}else{
 $status = 1;
}
 $result = $Category->where(array('id' => $id))->setField('status',$status);
 if(false != $result){
 $this->ajaxReturn(array('status' => 'ok', 'info' => '栏目状态更新成功'));
}else{
 $this->ajaxReturn(array('info' => '栏目状态更新失败'));
}
}

}

//保存排序
 public function save_sort()
{
 $id = I('id');
 $sort = I('sort');

 $Category = M('Category');
 $result = $Category->where(array('id' => $id))->setField('sort',$sort);
 if(false !== $result || 0 !== $result){
 $this->ajaxReturn(array('status' => 'ok', 'info' => '排序更新成功'));
}else{
 $this->ajaxReturn(array('info' => '排序更新失败'));
}
}

//删除栏目
 public function delete()
{
 $id = I('id');

 $Category = M('Category');
 $category_info = $Category->find($id);
if(!$category_info){
 return array('info' => '该模型不存在');
 }else if($category_info['is_system']){
 return array('info' => '系统模型不允许删除');
}else{
 $result = $Category->delete($id);
if($result){
 $this->ajaxReturn(array('status' => 'ok', 'info' => '栏目删除成功'));
}else{
 $this->ajaxReturn(array('info' => '栏目删除失败'));
}
}
}

}