YII2框架动态创建表模型

namespace backend\classes;
//创建动态表模型 
//在使用调用某些表数据的时候，勿需创建模型既可调用表数据,生成select
//$select= new SelectMade(‘bus_department‘,[‘id‘,‘department‘],‘sort‘,‘department‘,‘department‘);
//$department=$select->dropdown();
class SelectMade extends \yii\db\ActiveRecord {
    static $table;
    private $field;
    public $model;
    public $order;
    public $count;
    public $selectId;
    public $extends;
    public $selectName;
    public $itemid;
    //$table String 表名称
    //$field Array 要查找的字段  egg:[‘id‘,‘department‘]
    //$order String 排序字段
    //$selectName String 下拉列表的名称
    //$selectId String 下拉列表的ID
    //$itemid   Int 自增列序号或主键值
    //$extends 下拉列表的扩展属性 ‘egg:<select $extends></select>
    public function __construct($table,$field,$order,$selectName,$selectId,$itemid=‘‘,$extends=‘‘) {
        self::$table=$table;
        $this->field=$field;
        $this->order=$order;
        $this->selectId=$selectId;
        $this->extends=$extends;
        $this->selectName=$selectName;
        $this->itemid=$itemid;
        parent::__construct();
    }
    //定义动态表名词，数据来自于初始化类时
    public static function tableName(){
        return self::$table;
       
    }
    //数据查询
    public function query(){
        //获得相应的下拉的数组
        $this->model=$this->find()
                ->select($this->field)
                ->orderBy($this->order)
                ->asArray()
                ->all();
       //获得记录的条数，为后续统计服务 ，目前我是预留着，为后续JSON做准备。
        $this->count=$this->find()
                ->select($this->field)
                ->orderBy($this->order)
                ->count();
    }
    //动态生成下拉菜单
    //return String  
    public function dropdown(){
        $this->query();
        $dropdown=‘<select id="‘.$this->selectId.‘" name="‘.$this->selectName.‘" class="easyui-combobox" ‘.$this->extends.‘>‘;

        foreach (array_values($this->model) as $k=>$v){
           $v=  array_values($v);
           $m=($v[0]==$this->itemid)?‘ selected="selected"‘:‘ ‘;
           $dropdown.=‘ <option value="‘.$v[0].‘" ‘.$m.‘>‘.$v[1].‘</option>‘;
        }
        $dropdown.=‘</select>‘;
        return $dropdown;
    }