NetTuts.com has continued their series showing how to integrate a custom payment method into your OpenCart instance with part three of the series. In this tutorial they focus more on the frontend aspects, creating controller and model handling for the new method.

If you've been following along with this series, you should be familiar with the kind of file structure we set up for our custom payment method in the back-end. [...] We'll use a similar kind of file setup for the front-end section as well.

He starts with the controller, building a handler for the Custom method, doing some data filtering and getting the order information. He walks you through what each of the lines are doing and shows how to output the result back to a view. He also includes the model code needed for the custom payment method as well as language/template files to display the form needed to gather the necessary data.

On the NetTuts.com site today they've posted the first part of a series showing the integration of the BitPay bitcoin payment service into an OpenCart instance. In this first part they focus on getting some of the initial setup and administration handling set up.

In this series, we are going to look at building a Bitcoin payment system into our installation of OpenCart. Before we get started, I recommend that you practice the basic OpenCart module development if you are not familiar with how to build your own modules. Once done, you should have enough knowledge to continue with developing more advanced modules. In this series, that's exactly what we aim to do.

They start by having you download the BitPay API library and dropping it into the root directory of your OpenCart installation. Next they show you how to create an "Admin" controller with the data you'll need to pass into the view including data pulled from a model. They also create the admin view showing the current orders using bitcoin as payment, their status and options to change the speed of the API requests, status and toggling test mode on and off. Finally they include the code to save the results of the admin form submission and a bit of validation around user permissions and API key validity.