baoshi-was/app/Services/CommodityMaterialBoxModelService.php

<?php 

namespace App\Services;

use App\Traits\ServiceAppAop;
use App\CommodityMaterialBoxModel;

class CommodityMaterialBoxModelService
{
    use ServiceAppAop;
    protected $modelClass=CommodityMaterialBoxModel::class;


    /**
     * 获取最大限值
     *
     * @param integer|null $modelId
     * @param integer|null $commodityId
     *
     * @return int|null
     */
    public function getMaximum($modelId, $commodityId):?int
    {
        if (!$modelId || !$commodityId)return null;
        $model = CommodityMaterialBoxModel::query()->select("maximum")->where("commodity_id",$commodityId)
            ->where("material_box_model_id",$modelId)->first();
        return (int)$model->maximum ?? null;
    }

    /**
     * 设置最大限值
     *
     * @param integer|null $modelId
     * @param integer|null $commodityId
     * @param integer $maximum
     *
     * @return bool
     */
    public function setMaximum($modelId, $commodityId, $maximum):bool
    {
        if (!$modelId || !$commodityId)return false;
        $model = CommodityMaterialBoxModel::query()->select("maximum")->where("commodity_id",$commodityId)
            ->where("material_box_model_id",$modelId)->first();
        if (!$model)CommodityMaterialBoxModel::query()->create([
            "maximum" => $maximum,
            "commodity_id" => $commodityId,
            "material_box_model_id" => $modelId,
        ]);else $model->update(["maximum" => $maximum]);
        return true;
    }
}