Implementation method of accounting tree menu in ComboTree of ThinkPHP+EasyUI

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Assume that the fields of the accounting data table in the database are: id, code, name, islast. They are the auto-increment primary key, account code, account name, and whether it is the last-level account ("1" indicates the last-level account).

Here, recursion is used in the model layer of Thinkphp to build the data required by ComboTree. The code and annotations are as follows:

namespace Home\Model;
use Think\Model;

class AccountModel extends Model{

　　public function getTreeList(){  
  $data = $this->field('id,code,name,islast')->select(); 
  foreach($data as &$v){　　　　　　　 //这里加入了元素pid，用来标识父级id的　　　
   $len = strlen($v['code']);
   if($len == 3){　　　　　　　　　　//这里假设长度为3位的科目编码是一级,5位为二级科目，7位为三级，以此类推
    $v['pid'] = 0; 
   } else {
    $v['pid'] = substr($v['code'],0,$len-2); 
   }  
  }
  return $this->createTree($data); //生成ComboTree所需的数据结构
 }
 
 //递归的方式生成子树
 private function createSubTree($data,$pid){
  $tree = array();
  foreach($data as $k=>$v){
   if($v['pid'] == $pid){
    $newDate = array(
     'id' => $v['id'],
     'text'=>$v['name'],
     'state'=>($v['islast'] != 1)?'closed':'open'
    ); 
    if($v['islast'] != 1){　　　　　　　　//如果不是末级科目调用自身生成子数据
     $subData = $this->createSubTree($data,$v['code']);
     if(!empty($subData)){
      $newDate['children'] = $subData;  
     }
    }
    array_push($tree,$newDate);
   }   
  } 
  return $tree;
 }
 
 //生成树,先从一级会计科目分类开始创建树形菜单数据
 private function createTree($data){  
  $ret = array();
  foreach($data as $k => $v){
   if($v['pid'] == 0){
    $newDate = array(  //创建为ComboTree能够识别的格式，这里我没有更好的办法了，只能这样处理
     'id' => $v['id'],
     'text'=>$v['name'],
     'state'=>'closed'
    ); 
    $subData = $this->createSubTree($data,$v['code']);
    if(!empty($subData)){
     $newDate['children'] = $subData;  
    }
    $ret[] = $newDate; 
   }    
  }
  return $ret;
 }  
}

Data similar to the above (such as departments, regions, etc.) can basically achieve similar functions by simply modifying the code to build a tree menu.

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