exchange-2.0/app/Models/UserReward.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\SoftDeletes;

class UserReward extends AbstractModel
{
    use SoftDeletes;

    protected $table = 'user_rewards';

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

    public function reward()
    {
        return $this->belongsTo(Reward::class, 'reward_id');
    }

    public function user()
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    public function voucher()
    {
        return $this->belongsTo(Voucher::class, 'voucher_id');
    }
}