vendor/topthink/framework/src/think/service/ModelService.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2021 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: yunwuxin <448901948@qq.com>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace think\service;

use think\Model;
use think\Service;

/**
 * 模型服务类
 */
class ModelService extends Service
{
    public function boot()
    {
        Model::setDb($this->app->db);
        Model::setEvent($this->app->event);
        Model::setInvoker([$this->app, 'invoke']);
        Model::maker(function (Model $model) {
            $config = $this->app->config;

            $isAutoWriteTimestamp = $model->getAutoWriteTimestamp();

            if (is_null($isAutoWriteTimestamp)) {
                // 自动写入时间戳
                $model->isAutoWriteTimestamp($config->get('database.auto_timestamp', 'timestamp'));
            }

            $dateFormat = $model->getDateFormat();

            if (is_null($dateFormat)) {
                // 设置时间戳格式
                $model->setDateFormat($config->get('database.datetime_format', 'Y-m-d H:i:s'));
            }

            $timeField = $config->get('database.datetime_field');
            if (!empty($timeField)) {
                [$createTime, $updateTime] = explode(',', $timeField);
                $model->setTimeField($createTime, $updateTime);
            }

        });
    }
}