crm/app/model/OperateLog.php

<?php

namespace app\model;

use think\Model;

class OperateLog extends Model
{
     /**
     * 员工
     */
    public function employee()
    {
        return $this->belongsTo(Employee::class, 'employee_id');
    }

    /**
     * 公司
     */
    public function company()
    {
        return $this->belongsTo(Company::class, 'root_id','root_id');
    }  
}