Our sample application will need a few updates in order to use the REST API that we have defined, and generate the pages that we require. The steps that we will need to accomplish are broadly as follows:

• Create a board list component to list all boards as retrieved from the /api/boards endpoint.
• Integrate this board list component into our main page.
• Load and display the Manufacturer list and Board type list in our sidenav component from the /api/manufacturers and /api/board-types endpoints.
• Respond to a click event on a board in the board list and display the board details in our rightscreen component.
• Respond to filter events when a user filters the list of boards based on either manufacturer or board type.

As we make changes to the application, we will discuss the use of the Domain Events design pattern, as well as take a deep dive into the various ways of using Observables to work with and manipulate data.