Laravel Wallet

Refund ​

We already know how to buy, but what about returns? But they exist and you can use them.

User Model ​

Add the CanPay trait and Customer interface to your User model.

The trait CanPay already inherits HasWallet, reuse will cause an error.

php
use Bavix\Wallet\Traits\CanPay;
use Bavix\Wallet\Interfaces\Customer;

class User extends Model implements Customer
{
    use CanPay;
}

Item Model ​

Add the HasWallet trait and interface to Item model.

Since v9.0.0, there are two product interfaces:

  • For an unlimited number of products (ProductInterface);
  • For a limited number of products (ProductLimitedInterface);

An example with an unlimited number of products:

php
use Bavix\Wallet\Traits\HasWallet;
use Bavix\Wallet\Interfaces\Customer;
use Bavix\Wallet\Interfaces\ProductInterface;

class Item extends Model implements ProductInterface
{
    use HasWallet;

    public function getAmountProduct(Customer $customer): int|string
    {
        return 100;
    }

    public function getMetaProduct(): ?array
    {
        return [
            'title' => $this->title, 
            'description' => 'Purchase of Product #' . $this->id,
        ];
    }
}

Example with a limited number of products:

php
use Bavix\Wallet\Traits\HasWallet;
use Bavix\Wallet\Interfaces\Customer;
use Bavix\Wallet\Interfaces\ProductLimitedInterface;
use Bavix\Wallet\External\Api\PurchaseQuery;
use Bavix\Wallet\External\Api\PurchaseQueryHandlerInterface;

class Item extends Model implements ProductLimitedInterface
{
    use HasWallet;

    public function canBuy(Customer $customer, int $quantity = 1, bool $force = false): bool
    {
        /**
         * This is where you implement the constraint logic. 
         * 
         * If the service can be purchased once, then
         *  return ! app(PurchaseQueryHandlerInterface::class)->one(PurchaseQuery::create($customer, $this));
         */
        return true; 
    }
    
    public function getAmountProduct(Customer $customer): int|string
    {
        return 100;
    }

    public function getMetaProduct(): ?array
    {
        return [
            'title' => $this->title, 
            'description' => 'Purchase of Product #' . $this->id,
        ];
    }
}

I do not recommend using the limited interface when working with a shopping cart. For shopping cart checks, use PurchaseQuery + PurchaseQueryHandlerInterface as the primary API. PurchaseServiceInterface remains available as a legacy extension point until v14.

Make a refund ​

Find the user and check the balance.

php
$user = User::first();
$user->balance; // 0

Find the goods and check the balance.

php
$item = Item::first();
$item->balance; // 100

Return of funds!

php
(bool) app(PurchaseQueryHandlerInterface::class)->one(PurchaseQuery::create($user, $item)); // bool(true)
(bool)$user->refund($item); // bool(true)
$item->balance; // 0
$user->balance; // 100

It's simple!