ACCESS_TOKEN

PAYMENT_ID

IDEMPOTENCY_KEY

MERCHANT_ID

LOCATION_ID

REFUND_ID

EMPTY_ORDER_ID

ORDER_ID

INVOICE_ID

CUSTOMER_ID

VERSION

Gain insights into integrating Square APIs in Python to enhance business operations. Learn about payment, order, and invoice APIs and implement an e-commerce web application with Square's seamless workflow.

Handling Financial Services with Square API in Python.png

Square.tar.gz

code-widget

demo-app

Square offers digital payments and financial services to its customers. Developers can learn to integrate Square APIs to help businesses of almost all types and sizes grow.

This course provides a strong foundation with Square APIs for business operations. You'll get introduced to different payment, order, and invoice APIs. By the end of the course, you'll get hands-on experience with an e-commerce web application integrated with Square APIs. You’ll use these APIs to complete the purchase and payment workflow. Such a workflow usually requires creating an order, generating an invoice, and finally paying for it. Square takes care of all of it with just a few API calls.

Handling Financial Services with Square API in Python

This lesson will walk us through a Django e-commerce application that is integrated with Square APIs. We used the following APIs in the application workflow:

1. Orders API
2. Invoices API

# Workflow and APIs

Let's dive into the code and see how we integrate different Square APIs in our e-commerce application. We can see the contents of the `views.py` file in the widget below. Let's discuss it step-by-step:

- **Lines 8–11**: We create the Square client.
- **Lines 113 and 132**: When someone finishes adding items to the cart and wants to proceed with their purchase, the first step is to create an order which is done using the CreateOrder endpoint. We implemented it in the `create_order` function.
- **Lines 147–173 and lines 176–181**: The `get_draft_invoice` and `publish_invoice` functions are implemented respectively. Once the order is generated, the buyer clicks the “Generate invoice” button which takes them to the “Invoices” pages. This page displays the invoice which is generated using the CreateInvoice and PublishInvoice endpoints.
- The final step to complete the purchase is to pay for the order. The "Invoices" page displays the "Public URL" field where the buyer can navigate and pay for their order. The Square-supported credit card numbers discussed in [this](https://www.educative.io/courses/financial-services-square-api-python/create-an-invoice) lesson can be used to complete the payment.


Learn to build a fully functional Django e-commerce application using Square APIs.

Introduction

Square Business APIs

Manage Payments

Process Orders

Handle Invoices

APIs Integration in Django

Conclusion

Demo E-commerce Application