bike-admin/app/Models/CardRiding.php

<?php

namespace App\Models;

use App\Traits\ModelHelpers;
use Illuminate\Database\Eloquent\Model;

class CardRiding extends Model
{
    use ModelHelpers;
    protected $table = 'card_riding';

    protected $fillable = ['name','is_limit_times','effective_days','times','day_can_ridding_times','price','discount','is_discount','status','admin_id','deduction_money'];
    const LIMIT_TIMES_YES = 1;
    const LIMIT_TIMES_NO = 0;
    public static $limitTimesMaps = [
      self::LIMIT_TIMES_NO => '不限次',
      self::LIMIT_TIMES_YES => '限次',
    ];

    const DISCOUNT_YES = 1;
    const DISCOUNT_NO = 0;
    public static $discountMaps = [
      self::DISCOUNT_NO => '无折扣',
      self::DISCOUNT_YES => '有折扣',
    ];

    const STATUS_OK = 1;
    const STATUS_NO = 0;
    public static $statusMaps = [
      self::STATUS_OK=>'启用',
      self::STATUS_NO=>'停用',
    ];

    public function areaRidingCard(){
        return $this->belongsToMany(
            Area::class,
            'card_riding_area',
            'riding_card_id',
            'area_id'
        )->withTimestamps();
    }

    public function delete()
    {
        $this->areaRidingCard()->detach();
        return parent::delete();
    }
}