text: module.exports = (req, res, next) => {
      if (!req.body) {
          res.status(400).json( { 
              message: "Missing body data. Ensure you sent the user data you wish to be updated." 
          } );
      } else if (req.body.username || req.body.password || req.body.role || req.body.first_name || req.body.last_name || req.body.email || req.body.image) {
          next();
      } else {
          //if the req has a body, but doesn't include any of the user's fields
          res.status(400).json({ message: "Ensure you sent data referring to one of the user's felds." });
      }
  }