Easy Mocking in Elixir
Quick, dependency-free mocking in Elixir tests. Learn how to configure your mock once and use it everywhere. Simple and effective for all test suites.
Hey, I’m Peter! Developer & Educator.
I'm a Senior Elixir developer with a Psychology background, PragProg Author, Public Speaker and Blogger, and Founder. I'm passionate about Software Architecture, Product Engineering, and sharing knowledge.
Products
Building Table Views with Phoenix LiveView
Data is at the core of every business, but it is useless if nobody can access it. This book shows you how to generate business value by making your data accessible with advanced table UIs.
Build an MVP with Elixir
New to Elixir? This video course gets you started by developing a real-world product using Phoenix LiveView, deploying it to Fly.io, adding payments to it using LemonSqueezy, and more.
Building Forms with Phoenix LiveView
Creating forms in LiveView is easy - until it's not. This course teaches you how to build forms like a pro and to avoid the pitfalls along the way.Blog Posts
Easy Mocking in Elixir
The Saga Pattern in Elixir
Explore the Saga pattern in Elixir for managing complex, multi-step processes. Learn about choreography and orchestration approaches, with code examples for implementing long-lived transactions.
Resurrect your Phoenix Context
A retraction: I changed my mind about Phoenix contexts. Here's how I structure my Elixir code with a simpler, more effective design in the true functional way.
Handle Phoenix Exceptions gracefully
Silence the noisy Phoenix.NotAcceptableError and Plug.CSRFProtection.InvalidCSRFTokenError exceptions in your Phoenix application by implementing the Plug.Exception protocol for them.
Distribute your Files Globally with Tigris and Fly.io
Serve your files quickly to users all around the globe with just a small configuration change using Tigris' globally distributed S3-compatible storage solution.
Resize User-provided Images with Cloudflare Images
Learn how to upload user-provided images to Cloudflare Images and to resize them into size variants that are optimal for your application.
Sending Emails with Swoosh and Oban
Learn how to send emails from robust Oban workers so that you'll never miss sending an email again.
Every Ending is a new Beginning
Announcing my departure from employment life and the start of my freelancing and entrepreneurship life. At least until further notice.
Test an external, read-only Repository in Phoenix
When your application connects to an external database in read-only mode, it becomes difficult to write proper tests for it. This post explains how to set up a simulated external database locally to make testing becomes easy again.
