Question

Im using node.js+express+mongodb+mongoose, trying to retrieve user from database by custom ids, page returns back completely empty due to incorrect datatype of id value, here is some part of my code:

var User = new Schema({
  name: String , 
  email: String ,
  id: Number,
  role: String
});
var userModel = mongoose.model('User', User);
var person = new userModel();

function loaduser(req, res, next) {
  userModel.find({}, req.params.id, function(err, user){
    if (user){
      req.user = user;
      console.log(user);
      next();
    }
  })
  console.log(typeof req.params.id);
};

//personal page route
app.get('/user/:id', loaduser, function(req, res){
  res.render('show', { users: req.user });
});

and then this returns in console:

string
{ _id: 5012aa222c2d4d5876c5acd0,
    email: '[e-mail]',
    id: '0',
    name: 'alex',
    role: 'admin' },

even though i declared type of id as Number it gets back as String.
Any suggestions are welcome 🙂

Answer 1

Your find call isn’t quite right. The first parameter should be your query document and since you’re looking for one document you should use findOne instead. You also need to convert req.params.id to a number:

userModel.findOne({ id: Number(req.params.id) }, function(err, user){

If you still see a problem with id coming back as a string, it must be a string in the collection.