reviewController.updateReview = function(req, res, next) {
  if(req.is('application/json')){
    var targetId = req.params.reviewId;
    var productId = req.params.productId;

    for (var i = 0; i < reviewMock.length; i++){
      if (reviewMock[i].productId == productId && reviewMock[i].reviewId == targetId){
        if (req.body.rating){
          reviewMock[i].rating = req.body.rating;
        }
        if (req.body.title){
          reviewMock[i].title = req.body.title;
        }
        if (req.body.body){
          reviewMock[i].body = req.body.body;
        }
        if (req.body.isAnonymous){
          reviewMock[i].isAnonymous = req.body.isAnonymous;
        }

        fs.writeFile('src/mocks/reviews.json', JSON.stringify(reviewMock), function(err){
          if(err){
            next(err);
          }
          return res.sendStatus(202);    // 202 Accepted
        });
      } else {
        if(i == reviewMock.length - 1){
          console.log("acess");
          var err = new Error('Not Found');
          err.status = 404;
          next(err);
        }
      }
    }
  } else {
    var err = new Error('Unsupported Media Type')
    err.status = 415;
    next(err);
  }
}