Fastadmin下拉多选框编辑显示已选选项

php 参数存在 keyValue 只返回已选中数据

     /**
     * @description: 学校下部门
     * @return {*}
     */    
    public function school_dept()
    {
       $params=$this->request->param();
        $where['type']=2;
        $where['status']=1;
        $list=collection($this->model->where($where)->select())->toArray();
        $total = count($list);
        $rows=[];
        foreach($list as $k => $v){
            $item=[];
            $item['id']=$v['id'];
            $item['name']=$v['deptname'];
            if(isset($params['keyValue'])){
                if(in_array($v['id'],explode(',',$params['keyValue']))){
                    $rows[]=$item;
                }
            }else{
                $rows[]=$item;
            }
        }
        $result = array("total" => $total, "rows" => $rows);
        return json($result);
    }