新手,写了基本功能,未写排序等相关操作;求高手改进,
数据库:
类库文件:
Category.class.php<?php <br />
/**<br>
应用基于thinkphp的左右值无限分类<br>
**/<br>
class Category<br>
{<br>
//传入实化的对象【M('表名')】<br>
private $objCategory;<br>
//基础节点ID号<br>
public $intCurrentId;<br>
//设置制表符样式<br>
private $arrTabsStyle = array(<br>
'indent' => ' ',<br>
'process' => '├ ',<br>
'end'=>'└ '<br>
);<br>
//构造函数初始化<br>
public function __construct($objCategory)<br>
{<br>
$this->objCategory = $objCategory;<br>
}<br>
//验证传入ID【大于0的数字】<br>
private function checkFun($intId)<br>
{<br>
//$intId优先验证<br>
if(isset($intId))<br>
{<br>
$this->intCurrentId = $intId;<br>
return true;<br>
}<br>
//如果$this->intCurrentId 已设置,验证<br>
else<br>
{<br>
if(isset($this->intCurrentId))<br>
{<br>
return true;<br>
}<br>
else<br>
{<br>
return false;<br>
}<br>
}<br>
}<br>
//根据ID号获取当前节点左右值<br>
private function setCurrentData($intId)<br>
{<br>
if(false == $this->checkFun($intId))<br>
{<br>
return false;<br>
}<br>
$map['id'] = $this->intCurrentId;<br>
return $this->objCategory->field(array('lft','rgt'))->where($map)->find();<br>
}<br>
/*<br>
*作用:<br>
设置输出列表数据的制表符样式<br>
*参数:<br>
$key:arrTabsStyle的KEY<br>
$value:arrTabsStyle的值<br>
*/<br>
public function setTabStyle($key, $value = '')<br>
{<br>
if(isset($this->arrTabsStyle[$key]))<br>
{<br>
$this->arrTabsStyle[$key] = $value;<br>
}<br>
}<br>
/*<br>
*作用:<br>
根据ID号获取当前节点数据<br>
*参数:<br>
$intId:可设置的,需读取节点ID号<br>
*/<br>
public function getCurrentData($intId)<br>
{<br>
if(false == $this->checkFun($intId))<br>
{<br>
return false;<br>
}<br>
$map['id'] = $this->intCurrentId;<br>
return $this->objCategory->field(array('id','title'))->where($map)->find();<br>
}<br>
/*<br>
*作用:<br>
获取当前节点的父节点数据<br>
*参数:<br>
$intId:需要读取节点的ID<br>
*/<br>
public function getParentCategoryData($intId)<br>
{<br>
$arrRoot = $this->setCurrentData($intId);<br>
if($arrRoot)<br>
{<br>
$map['lft'] = array('LT', $arrRoot['lft']);<br>
$map['rgt'] = array('GT', $arrRoot['rgt']);<br>
return $this->objCategory->where($map)->find();<br>
}<br>
else<br>
{<br>
return false;<br>
}<br>
}<br>
/*<br>
*作用:<br>
获取ID下节点列表<br>
*参数:<br>
$intId:需要读取节点的父ID<br>
$intLevel:目录等级默认到100级<br>
*/<br>
public function getCategoryList($intId = 1, $intLevel = 100)<br>
{<br>
//获取选定节点左右值,得出取值区间<br>
$arrRoot = $this->setCurrentData($intId);<br>
if($arrRoot)<br>
{<br>
//读取数据库符合条件的数据<br>
$map['lft'] = array('BETWEEN', array($arrRoot['lft'], $arrRoot['rgt']));<br>
$arrChildList = $this->objCategory->where($map)->order('lft')->select();<br>
//return $arrChildList;<br>
//对取出数据进行格式化<br>
$arrRight = array();<br>
foreach($arrChildList as $v)<br>
{<br>
<br>
if(count($arrRight))<br>
{<br>
while ($arrRight[count($arrRight) - 1]
{<br>
array_pop($arrRight);<br>
}<br>
}<br>
//设置读取目录等级<br>
if($intLevel > count($arrRight))<br>
{<br>
$title = $v['title'];<br>
//设置输出时的样式<br>
if(count($arrRight))<br>
{<br>
$title = $this->arrTabsStyle['process'].$title;<br>
}<br>
$title = str_repeat($this->arrTabsStyle['indent'], count($arrRight)).$title;<br>
$returnCategoryList[] = array('id'=>$v['id'],'title'=>$title,'lft'=>$v['lft'],'rgt'=>$v['rgt']);<br>
$arrRight[] = $v['rgt'];<br>
}<br>
}<br>
return $returnCategoryList;<br>
}<br>
return false;<br>
}<br>
/*<br>
*作用:<br>
获取节点的子节点数<br>
*参数:<br>
$intId:需要读取节点的父ID<br>
*/<br>
public function getCategoryCount($intId)<br>
{<br>
$arrRoot = $this->setCurrentData($intId);<br>
return ($arrRoot['rgt'] - $arrRoot['lft'] - 1) / 2;<br>
}<br>
/*<br>
*作用:<br>
添加节点<br>
*参数:<br>
$bolType:true添加到节点前面,false添加到节点尾部<br>
$intId:添加到的父节点<br>
*/<br>
public function insertCategory($bolType = false, $intPid)<br>
{<br>
$data = I('param.');<br>
if(!isset($intPid))<br>
{<br>
$intPid = $data['pid'];<br>
}<br>
$arrRoot = $this->setCurrentData($intPid);<br>
if($arrRoot)<br>
{<br>
if($bolType)<br>
//true添加到节点前面<br>
{<br>
$this->objCategory->where('rgt>'.$arrRoot['lft'])->setInc('rgt',2);<br>
$this->objCategory->where('lft>'.$arrRoot['lft'])->setInc('lft',2);<br>
//设置当前节点的左右值<br>
$data['lft'] = $arrRoot['lft'] + 1;<br>
$data['rgt'] = $arrRoot['lft'] + 2;<br>
}<br>
else<br>
//false添加到节点尾部<br>
{<br>
$this->objCategory->where('rgt>='.$arrRoot['rgt'])->setInc('rgt',2);<br>
$this->objCategory->where('lft>'.$arrRoot['rgt'])->setInc('lft',2);<br>
$data['lft'] = $arrRoot['rgt'];<br>
$data['rgt'] = $arrRoot['rgt'] + 1;<br>
}<br>
return $this->objCategory->add($data);<br>
}<br>
else<br>
{<br>
return false;<br>
}<br>
}<br>
/*<br>
*作用:<br>
删除节点<br>
*参数:<br>
$intId:被删除的节点ID<br>
*/<br>
public function deleteCategory($intId)<br>
{<br>
$arrRoot = $this->setCurrentData($intId);<br>
if($arrRoot)<br>
{<br>
$ints = $arrRoot['rgt'] - $arrRoot['lft'] + 1;<br>
$map['lft'] = array('BETWEEN', array($arrRoot['lft'], $arrRoot['rgt']));<br>
$this->objCategory->where($map)->delete();<br>
$this->objCategory->where('lft>'.$arrRoot['rgt'])->setDec('lft',$ints);<br>
$this->objCategory->where('rgt>'.$arrRoot['rgt'])->setDec('rgt',$ints);<br>
return true;<br>
}<br>
else<br>
{<br>
return false;<br>
}<br>
}<br>
/*<br>
*作用:<br>
更新节点<br>
*参数:<br>
$intId:被删除的节点ID<br>
*/<br>
public function updateCategory()<br>
{<br>
//读取POST数据存入数组<br>
$data = I('param.');<br>
//父ID等于子ID,直接跳出<br>
if($data['pid'] == $data['id']){return false;}<br>
//post.pid和当前父post.old相等说明未改变目录,不更新左右值<br>
if($data['pid'] !== $data['oldpid'])<br>
{<br>
/**********************************【读取所需的相关值】********************************/<br>
//获取新的父节点的数据<br>
$arrParent = $this->setCurrentData($data['pid']);<br>
//取当前节点的数据<br>
$arrCurrent = $this->setCurrentData($data['id']);<br>
/* 任务:删除节点 */<br>
/**********************************【A-1:隔离数据】************************************/<br>
//将需要调整位置的左右值+100000<br>
$map['lft'] = array(<br>
array('EGT', $arrCurrent['lft']),<br>
array('ELT', $arrCurrent['rgt'])<br>
);<br>
$this->objCategory->where($map)->setInc('lft',100000);<br>
//因为左值已更新,所以条件变化+100000<br>
$map['lft'] = array(<br>
array('EGT', $arrCurrent['lft'] + 100000),<br>
array('ELT', $arrCurrent['rgt'] + 100000)<br>
);<br>
$this->objCategory->where($map)->setInc('rgt',100000);<br>
unset($map);<br>
/**********************************【A-2:更新正常节点值】******************************/<br>
//获取隔离节点后续更新的步长值<br>
$intStep = $arrCurrent['rgt'] - $arrCurrent['lft'] + 1;<br>
//更新节点左右值<br>
$map['lft'] = array(<br>
array('GT', $arrCurrent['rgt']),<br>
array('LT', 100000)<br>
);<br>
$this->objCategory->where($map)->setDec('lft',$intStep);<br>
unset($map);<br>
$map['rgt'] = array(<br>
array('GT', $arrCurrent['rgt']),<br>
array('LT', 100000)<br>
);<br>
$this->objCategory->where($map)->setDec('rgt',$intStep);<br>
unset($map);<br>
/* 完成:删除节点 */<br>
/* 任务:更新节点 */<br>
/**********************************【B-1:新父节目点提供下级节点的空间】****************/<br>
$map['lft'] = array(<br>
array('GT', $arrParent['lft']),<br>
array('LT', 100000)<br>
);<br>
$this->objCategory->where($map)->setInc('lft',$intStep);<br>
unset($map);<br>
$map['rgt'] = array(<br>
array('GT', $arrParent['lft']),<br>
array('LT', 100000)<br>
);<br>
$this->objCategory->where($map)->setInc('rgt',$intStep);<br>
unset($map);<br>
/**********************************【B-2:将节点放入指定下级的空间】********************/<br>
//获取隔离节点后续更新的步长值<br>
$intStep = 100000 + ($arrCurrent['lft'] - ($arrParent['lft'] + 1));<br>
//更新左右值大于父节点左值的节点的左右值<br>
$map['lft'] = array(<br>
array('EGT', $arrCurrent['lft'] + 100000),<br>
array('ELT', $arrCurrent['rgt'] + 100000)<br>
);<br>
$this->objCategory->where($map)->setDec('lft',$intStep);<br>
unset($map);<br>
$map['rgt'] = array(<br>
array('EGT', $arrCurrent['lft'] + 100000),<br>
array('ELT', $arrCurrent['rgt'] + 100000)<br>
);<br>
$this->objCategory->where($map)->setDec('rgt',$intStep);<br>
}<br>
return $this->objCategory->where('id='.$data['id'])->setField('title', $data['title']);<br>
}<br>
}<br>
?>
使用:<?php <br />
class CategoryAction extends CommonAction {<br>
private $objCG;<br>
public function _initialize(){<br>
//导入分类库<br>
import('@.ORG.Util.Category');<br>
$this->objCG = new Category(M('CommonCategory'));<br>
}<br>
//目录列表<br>
public function index($id = 1){<br>
$this->cateorylist = $this->objCG->getCategoryList($id);<br>
$this->display();<br>
}<br>
//添加目录<br>
public function add($id=1){<br>
$this->cateorylist = $this->objCG->getCategoryList($id);<br>
$this->display();<br>
}<br>
//编辑目录<br>
public function edit($id){<br>
if (!empty($id)){<br>
//输出所有的节点<br>
$this->cateorylist = $this->objCG->getCategoryList(1);<br>
//读取当前节点数据<br>
$vo = $this->objCG->getCurrentData($id);<br>
if ($vo){<br>
//读取当前节点的父节点数据<br>
$arrParent = $this->objCG->getParentCategoryData($id);<br>
$vo['pid'] = $arrParent['id'];<br>
$this->assign('vo',$vo);<br>
$this->display();<br>
}else{<br>
$this->error('数据不存在!');<br>
}<br>
}else{<br>
$this->error('数据不存在!');<br>
}<br>
}<br>
//添加目录:操作<br>
public function insert(){<br>
$list = $this->objCG->insertCategory();<br>
if ($list !== false)<br>
{<br>
$this->success('数据保存成功!');<br>
}<br>
else<br>
{<br>
$this->error('数据写入错误!');<br>
}<br>
}<br>
public function delete($id){<br>
if (!empty($id))<br>
{<br>
$result = $this->objCG->deleteCategory($id);<br>
if ($result)<br>
{<br>
$this->success('删除成功!');<br>
}<br>
else<br>
{<br>
$this->error('删除出错!');<br>
}<br>
}<br>
else<br>
{<br>
$this->error('ID错误!');<br>
}<br>
}<br>
public function update(){<br>
$list = $this->objCG->updateCategory();<br>
if ($list !== false)<br>
{<br>
$this->success('更新成功!');<br>
}<br>
else<br>
{<br>
$this->error("操作失败!");<br>
}<br>
}<br>
}
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