Welcome back to this final part of our four-part series on metaprogramming in Elixir. Previously, we explored the various applications of macros. In this part, we’ll delve into common pitfalls that you might encounter when metaprogramming in Elixir.
Authorization (not to be confused with authentication) is vital to every application but often isn’t given much thought before implementation. The IETF Site Security Handbook defines authorization as: So, in short, authorization is about defining access policies and scoping. For example, consider a platform like Github.
Welcome back to this third part of our four-part series on metaprogramming in Elixir. Previously, we established the underlying behavior of macros. Now we will dive into the various applications of macros in Elixir using open-source Elixir libraries. Let’s go!
The LiveView framework supports all of the most common features that Single-Page Apps must offer their users, including multipart uploads. In fact, LiveView can give us highly interactive file uploads, right out of the box. In this post, we’ll add a file upload feature to an existing Phoenix LiveView application. Along the way, you’ll learn how to use LiveView to display upload progress and feedback while editing and saving uploaded files.
Welcome back to part two of this series on metaprogramming in Elixir. In part one, we introduced metaprogramming and gave a brief overview of macros. In this part, we will explore the inner workings and behaviors of macros in more depth. As discussed in the previous post, macros are compile-time constructs in Elixir. So, before diving into how macros work, it is important to understand where macros lie within Elixir’s compilation process.
LiveView is a compelling choice for building modern web apps. Built on top of Elixir’s OTP tooling and leveraging WebSockets, it offers super-fast real-time, interactive features alongside impressive developer productivity. LiveView keeps the developer’s mind firmly rooted on the server-side, even when testing and debugging. This can empower you to deliver interactive features in single-page apps faster than ever before.
In this third and final part of my series about production code upgrades in Elixir, we will look at what happens during an application upgrade. Let’s get going!
In this world, there are many mysteries — but few are as elusive as metaprogramming in Elixir. In this four-part series, we’ll start by looking at core concepts and then explore how metaprogramming operates in Elixir specifically. Let’s develop an understanding of metaprogramming and uncover some Elixir metaprogramming secrets!
In the second part of this two-part series on testing LiveView in Elixir, we’ll write an integration test that validates interactions within a single live view, and an integration test that validates the interactions between two separate live views. You will focus on testing the behavior of the survey results chart filter from the previous post. We’ll use the LiveViewTest module’s functions to simulate LiveView connections without a browser.
In the previous chapter of this series, we looked at hot code reloading in Elixir and why we should use GenServer to implement long-running processes. But to organize a whole application, we need one more building block — supervisors. Let’s take a look at supervisors in detail.
