oralcavity/application/admin/model/Change.php

<?php

namespace app\admin\model;

use think\Model;

class Change extends Model
{

    public function getAll($param, $page, $pageSize)
    {
        unset($param['page']);
        unset($param['pageSize']);
        foreach ($param as $k => $v) {
            if ($param[$k] === '' || $param[$k] === null) {
                unset($param[$k]);
            }
        }
        $result = $this->where($param)->with(['getUserOneData', 'getCustomerOneData'])->limit($page, $pageSize)->select();
        $total = $this->where($param)->count();
        return ['rows' => $result, 'total' => $total];
    }

    public function getUserOneData()
    {
        return $this->hasOne(\app\admin\model\User::class, 'id', 'user_id')->bind(['username' => 'username']);
    }

    public function getCustomerOneData()
    {
        return $this->hasOne(\app\admin\model\Customer::class, 'id', 'customer_id')->bind(['customer_name' => 'name']);
    }

}