Programming Phoenix

Using Umbrellas

Now that we’ve confirmed our intuition by using Observer, we can get down to the work of splitting these applications. Each umbrella project has a parent directory that defines:

• The shared configuration of the project
• The dependencies for that project
• The apps directory with child applications

To get started, let’s create an umbrella project called rumbrella. Instead of using mix phoenix.new to build a Phoenix application, we’ll use mix new, which ships with Elixir, and pass it the --umbrella flag. Let’s run the command outside of the rumbl application, like this:

$ mix new rumbrella --umbrella

* creating .gitignore
* creating README.md
* creating mix.exs
* creating apps
* creating config
* creating config/config.exs ...