Routes Constraints and Namespaces

In this lesson, we will be working on the config/routes.rb file. Specifically, we will set the route constraints and the default response format for each request.

Create an API controller

Let’s start by isolating the API controllers under a namespace.

This is fairly simple process with Rails. First, we have to create a folder under the app/controllers named api. The name is important because that’s the namespace we’ll use to manage the API endpoints’ controllers. We will create this folder using the following command:

$ mkdir app/controllers/api

Now create this folder in our app by typing this command in the terminal below.