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The native SDKs provide a convenient way to retrieve available payment options for your checkout. This allows you to display all payment methods that are available for the transaction to your users.

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Use cases

List payment options to:
  • Display available payment methods at checkout
  • Filter payment options based on merchant, country, currency, and amount
  • Determine which payment methods to present to your customer
  • Implement dynamic payment method selection UI

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Implementation

Create a request with your checkout details and retrieve available payment options. 
let gr4vy = try Gr4vy(
    gr4vyId: "example",
    token: "your_jwt_token",
    merchantId: "merchant_123", // Set the default merchant ID
    server: .sandbox,
    debugMode: true
)

let request = Gr4vyPaymentOptionRequest(
    merchantId: "merchant_123", // Optional, uses SDK merchantId if not provided
    metadata: ["order_id": "12345"],
    country: "US",
    currency: "USD",
    amount: 1299,
    locale: "en-US",
    cartItems: nil
)

// Async/await
do {
    let paymentOptions = try await gr4vy.paymentOptions.list(request: request)
    print("Available payment options: \(paymentOptions.count)")
} catch {
    print("Error fetching payment options: \(error)")
}

// Completion handler
gr4vy.paymentOptions.list(request: request) { result in
    switch result {
    case .success(let paymentOptions):
        print("Available payment options: \(paymentOptions.count)")
    case .failure(let error):
        print("Error fetching payment options: \(error)")
    }
}

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Best practices

  • Cache results: Store payment options locally to reduce API calls when the country, currency, and amount haven’t changed.
  • Error handling: Always handle network and HTTP errors gracefully and show appropriate messages to users.
  • Timeout configuration: Use custom timeouts for payment options requests if your network conditions require it.
  • Localization: Use the appropriate locale to ensure payment option labels are displayed in the correct language.