4d_admin_backend/app/Models/Region.php

<?php

namespace App\Models;

// use Illuminate\Contracts\Authenticate\MustVerifyEmail;
use DateTimeInterface;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;
use Laravel\Sanctum\HasApiTokens;
use Tymon\JWTAuth\Contracts\JWTSubject;

class Region extends Model
{
    use HasFactory;

    // 设置表名
    protected $table = 'region';

    // 设置主键
//    public $primaryKey = 'id';

    /**
     * 自动生成时间戳
     */
    public $timestamps = FALSE;


    /**
     * 日期时间的存储格式
     *
     * @var string
     */
//    protected $dateFormat = 'Y-m-d H:i:s';


    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [];


    /**
     * The attributes that should be hidden for serialization.
     *
     * @var array<int, string>
     */
    protected $hidden = [];

    public function children()
    {
        return $this->hasMany(Region::class,'parentId','id');
    }

    public function service()
    {
        return $this->hasOne(ProjectServiceRelevancy::class,'service_id','id');
    }
}