text: const Calculator = require('../models/Calculator');
  module.exports = {
      indexGet: (req, res) => {
          res.render('home/index');
      },
      indexPost: (req, res) => {
          let calculatorBody = req.body;
  
          let calculatorParams = calculatorBody['calculator'];
  
          let calculator = new Calculator();
          calculator.leftOperand= Number(calculatorParams.leftOperand);
          calculator.operator= calculatorParams.operator;
          calculator.rightOperand= Number(calculatorParams.rightOperand);
  
          let result = calculator.calculateResult();
  
          res.render('home/index', {'calculator': calculator, 'result': result});
  
      }
  };