star-erp/app/Models/Vendor.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Spatie\Activitylog\Traits\LogsActivity;
use Spatie\Activitylog\LogOptions;

class Vendor extends Model
{
    use LogsActivity;

    protected $fillable = [
        'code',
        'name',
        'short_name',
        'tax_id',
        'owner',
        'contact_name',
        'tel',
        'phone',
        'email',
        'address',
        'remark'
    ];
    public function products(): BelongsToMany
    {
        return $this->belongsToMany(Product::class, 'product_vendor')
                    ->withPivot('last_price')
                    ->withTimestamps();
    }

    public function purchaseOrders(): HasMany
    {
        return $this->hasMany(PurchaseOrder::class);
    }

    public function getActivitylogOptions(): LogOptions
    {
        return LogOptions::defaults()
            ->logAll()
            ->logOnlyDirty()
            ->dontSubmitEmptyLogs();
    }
}