In this chapter, we have covered a lot of ground. We have gone from an idea and an expectant Rails installation to a full-fledged data model, populated from an external data source, with full validation and unit test suite. We have also written a script to get the data into the application, and shared the code development across the team.

We also had a tantalizing glimpse of how Rails exposes this data to end users through a browser interface when we applied the scaffold. In the next chapter, we will exploit the full power of Rails to go beyond the scaffold, building the logic for the application controllers, and fleshing out the user interface.