Over the last few weeks, we have been building a web application in one of our clients and ended up duplicating some template code. These new pages had something in common between them, but not with the rest of the application. We needed an inner layout to reuse the template code between these pages, however, … »
Today we will learn how to build forms in Phoenix that use our schema information to dynamically show the proper input fields with validations, errors and so on. We aim to support the following API in our templates: <%= input f, :name %> <%= input f, :address %> <%= input f, :date_of_birth %> <%= input … »
Note: Elixir v1.4 has been released and improves on many points touched by this article. From v1.4, Elixir will automatically infer the list of applications based on your dependencies. For more information, read the official announcement. In my journey as a curious Elixir developer, I’ve come across this seemingly simple question a few times: which … »
We’ve been talking about deploy and releases with Elixir lately, like how to run migrations on top of a release or how to deal with environment variables. Now it’s time to discover another tool that can help us release our Elixir application. After practicing deploy and tracing through nodes with Exrm, we got more comfortable … »
It’s very common (and highly recommended) that application keeps its configuration values separated from its version control. A way of doing this is by using ENV vars (environment variables). They’re being used for improvements mostly on maintainability. The 12-factor app manifesto explains it on its Configuration section: The twelve-factor app stores config in environment variables … »
Today we will continue exploring techniques for debugging and tracing Elixir code that are so important for running and understanding production systems. In the past, we have discussed: how to debug your application how to trace systems with Erlyberly how to use the observer to introspect applications. The examples above always connected to systems running … »
