Currently on gov.uk we have some Smart Answers that work primarily with input that we perform calculations on. For example, a lot will ask the user for their salary, dates or time periods, and so on. Various calculations are then performed to determine a result.
This repository is an experiment / early prototype as to a new format that might better suit those Smart Answers, by providing live calculations and instant feedback.
Once you clone the repository down and cd into it, you just need to install dependencies and then run the app:
$ bundle
$ ruby app.rb
Visit localhost:4567/child-benefits to see an example.
Calculator logic is stored in public/js/calculators, and the view files (EJS is used for templating) are in public/views/. There is currently only one fake calculator there to demonstrate how it works.