hb/server/app/Models/Config.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Config extends Model
{
    protected $table    = 'config';
    protected $fillable = ['key', 'value', 'desc'];

    public function getCreatedAtAttribute($value)
    {
        $dateTime = new \DateTime($value);

        // 格式化时间
        $formattedTime = $dateTime->format('Y-m-d H:i:s');

        return $formattedTime;
    }

    public function getUpdatedAtAttribute($value)
    {
        $dateTime = new \DateTime($value);

        // 格式化时间
        $formattedTime = $dateTime->format('Y-m-d H:i:s');

        return $formattedTime;
    }

    public function getValueAttribute($extra)
    {
        if (18 == $this->id) {
            // 执行格式化操作
            return array_values(json_decode($extra, true) ?: []);
        }

        // 不执行格式化操作
        return $extra;
    }

    public function setValueAttribute($extra)
    {
        if (18 == $this->id) {
            // 执行格式化操作
            return $this->attributes['value'] = json_encode(array_values($extra));
        }

        return $this->attributes['value'] = $extra;
    }
}