express mongoose status

This is a simple lib to handle mongoose responses and convert them to correct HTTP status in a REST API using Express

under continuous improvement....

Problems in common mongoose + express usage

Many code around the web, you can see something like this (when the err has error handler...):

route.get("/some/route/:id", function (req, res, next) {
  MongooseModel.find({"_id": req.params.id }, function (err, data) {
    if (err) {
      return res.status(500).send(err.name); //or next(err), res.sendStatus(500) etc
    }
    res.send(data);
  });
});

Whats the problem with follow approach?

• Any kind of error will throws status 500 Internal Error
• If the param.id isn't a ObjectId, it will throw a CastError (instead of 404 not found behavior)
• Any ValidatorError error will not throws a expected 400 Bad Request
• Even with valid ObjectId in param.id, successful, but empty responses will throw a 200 OK

Why not just abstract this? Why repeat yourself with a lot of validations? It can be so simple...

var statusHandler = require("express-mongoose-status");
route.get("/some/route/:id", function (req, res, next) {
  MongooseModel.find({"_id": req.params.id }, function (err, data) {
    statusHandler(err, res, data);
  });
});

Installation

npm install express-mongoose-status --save

To be added

• Doc
• Samples
• Tests