baoshi-was/app/Customer.php

<?php

namespace App;

use App\Traits\ModelTimeFormat;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;

use App\Traits\ModelLogChanging;

class Customer extends Model
{
    use ModelLogChanging;

    use ModelTimeFormat;

    protected $fillable = [
        "code",             //客户代码
        "name",             //客户名称
        "company_name",     //公司名称
        "invoice_address",  //发票地址
        "contact_man",      //联系人
        "phone",            //联系电话
        "remark",           //公司备注
    ];

    public function customerLogs(): HasMany
    {
        return $this->hasMany(CustomerLog::class,'customer_id','id');
    }

    public function owners()
    {   //子项目
        return $this->hasMany(Owner::class,"customer_id","id");
    }

    public function tags()
    {   //标签
        return $this->belongsToMany(CustomerTag::class,"customer_tag_customer");
    }
}