Yii2.0 添加分类category model类

<?php

namespace app\models;

use yii\db\ActiveRecord;
use Yii;
use yii\helpers\ArrayHelper;

class Category extends ActiveRecord
{
public static function tableName()
    {
return "{{%category}}";
    }

public function attributeLabels()
    {
return [
'parentid' => '上级分类',
            'title' => '分类名称'
        ];
    }

public function rules()
    {
return [
            ['parentid', 'required', 'message' => '上级分类不能为空'],
            ['title', 'required', 'message' => '标题名称不能为空'],
            ['createtime', 'safe']
        ];
    }

public function add($data)
    {
$data['Category']['createtime'] = time();
if ($this->load($data) && $this->save()) {
return true;
        }
return false;
    }

public function getData()
    {
$cates = self::find()->all();
$cates = ArrayHelper::toArray($cates);
return $cates;
    }

public function getTree($cates, $pid = 0)
    {
$tree = [];
foreach($cates as $cate) {
if ($cate['parentid'] == $pid) {
$tree[] = $cate;
$tree = array_merge($tree, $this->getTree($cates, $cate['cateid']));
            }
        }
return $tree;
    }

public function setPrefix($data, $p = "|-----")
    {
$tree = [];
$num = 1;
$prefix = [0 => 1];
while($val = current($data)) {
$key = key($data);
if ($key > 0) {
if ($data[$key - 1]['parentid'] != $val['parentid']) {
$num ++;
                }
            }
if (array_key_exists($val['parentid'], $prefix)) {
$num = $prefix[$val['parentid']];
            }
$val['title'] = str_repeat($p, $num).$val['title'];
$prefix[$val['parentid']] = $num;
$tree[] = $val;
next($data);
        }
return $tree;
    }

public function getOptions()
    {
$data = $this->getData();
$tree = $this->getTree($data);
$tree = $this->setPrefix($tree);
$options = ['添加*分类'];
foreach($tree as $cate) {
$options[$cate['cateid']] = $cate['title'];
        }
return $options;
    }

public function getTreeList()
    {
$data = $this->getData();
$tree = $this->getTree($data);
return $tree = $this->setPrefix($tree);
    }

public static function getMenu()
    {
$top = self::find()->where('parentid = :pid', [":pid" => 0])->limit(11)->orderby('createtime asc')->asArray()->all();
$data = [];
foreach((array)$top as $k=>$cate) {
$cate['children'] = self::find()->where("parentid = :pid", [":pid" => $cate['cateid']])->limit(10)->asArray()->all();
$data[$k] = $cate;
        }
return $data;
    }

}