baoshi-was/app/OwnerLogisticFeeReport.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

use App\Traits\ModelLogChanging;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class OwnerLogisticFeeReport extends Model
{
    use ModelLogChanging;

    public $fillable = [
        'owner_logistic_sum_fee_report_id',//
        'logistic_id',//承运商
        'province_id', //省份
        'counted_date',//统计月份
        'initial_weight',//首重
        'initial_weight_price',//首重价格
        'initial_amount', //数量
        'additional_weight', //续重
        'additional_price', //续重价格
        'additional_amount',//续重数量
        'fee',//费用
        'tax_fee',//税费
        'owner_id'//货主
    ];

        protected $appends = [
            'initial_weight_fee',
            'additional_weight_fee'
        ];
    public $timestamps = false;

    public function logistic(): BelongsTo
    {
        return $this->belongsTo(Logistic::class);
    }

    public function province(): BelongsTo
    {
        return $this->belongsTo(Province::class);
    }

    public function getInitialWeightFeeAttribute(): string
    {
        return number_format($this->initial_weight * $this->initial_weight_price * $this->initial_amount, 2);
    }

    public function getAdditionalWeightFeeAttribute(): string
    {
        return number_format($this->additional_weight * $this->additional_price * $this->additional_amount, 2);
    }
}