For a Rails validator, how would you define an error message for the model attribute address with the message "This address is invalid"?

Given the URL helper product_path(@product), which statement would be expected to be false?

In Rails, how would you cache a partial template that is rendered?

What is the reason for using Concerns in Rails?

When using an ActiveRecord model, which method will create the model instance in memory and save it to the database?

You are using an existing database that has a table named coffee_orders. What would the ActiveRecord model be named in order to use that table?

What is the default value for a global variable (before initialization)?

Which files is used to specify any default data that should be loaded into the application's database, when it is first setup?

The recommended directory in which to place your app's javascript files is:

Which of these is not a standard directory in a Rails application?

What is a typical file extension found in the app/controllers directory