You need to fetch current currency rates for conversion from EUR to USD and EUR to CHF (both ways) from the currencylayer API and store them into a PostgreSQL database table. https://currencylayer.com (you'll have to sign up for a free account)
- Define an appropriate table structure
- Provide a Ruby application that loads the data from the currencylayer API and stores it in the table
- Build a simple frontend, which allows us to input currency values and convert them accordingly
- Make sure we have the most recent rates every morning at 8:00 CET
- Nice to have: On the frontend side, add a graph with the daily rates of the last weeks for a selected (dropdown) currenty (feel free to use rates.json seed file)
- Please use the
money-currencylayer-bankgem
- Entity / Schema design - what is the best way to persist the data collected here in a maintainable way? - What is the best way to represent monetary data?
- What would you need to add if we were to put this implementation into production?
- What are the advantages / disadvantages of 3rd party libraries?
- How would you test this?
- Use any gem or lib you want
- Any feature from current ruby versions
- Any feature from current PostgreSQL versions
- Follow your and community best practices