sam-manage/app/Models/Finance/CorporateCardPrepayment.php

<?php

namespace App\Models\Finance;

use Illuminate\Database\Eloquent\Model;

class CorporateCardPrepayment extends Model
{
    protected $table = 'corporate_card_prepayments';

    protected $fillable = ['tenant_id', 'year_month', 'amount', 'memo', 'items'];

    protected $casts = [
        'items' => 'array',
    ];

    public function scopeForTenant($query, int $tenantId)
    {
        return $query->where('tenant_id', $tenantId);
    }

    public static function getOrCreate(int $tenantId, string $yearMonth): self
    {
        return static::firstOrCreate(
            ['tenant_id' => $tenantId, 'year_month' => $yearMonth],
            ['amount' => 0, 'memo' => null]
        );
    }
}