ptb-be/middleware/validation.js

const Validator = require("fastest-validator");

exports.validation = (valueFrom, schema, ) => (req, res, next) => {
  const v = new Validator();
  const check = v.compile(schema);
  const validationError = check(valueFrom(req))
  if (validationError.length) {
    return res.status(400).json({
      message: 'Validation Error',
      error: validationError
    })
  }
  next()
}