exchange-2.0/app/Models/TransactionMappingLog.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class TransactionMappingLog extends Model
{
    protected $fillable = ['imported_by','data','imported_date','type'];

    /**
     * Get the attributes that should be cast.
     *
     * @return array<string, string>
     */
    protected function casts(): array
    {
        return [
            'data' => 'array',
        ];
    }

    public static function boot() {
        parent::boot();

        static::creating(function ($model) {
            $model->imported_by = auth()->user()->id;
        });
    }
    
}