controller-example.js

// file: controller.js

const databaseUpdater = require('../model/databaseUpdater');
// ^ This is out model function that goes and updates the database.
function updateTotal(total) {
 databaseUpdater({ body: total });
}
function calculateTotal(data) {
 const total = data.reduce((accumulator, number) => accumulator + number, 0);
 updateTotal(total);
}
module.exports = calculateTotal;