How to exclude some fields from the document

Question

I have the following simple shema: ``` var userSchema = new Schema({ name : String, age: Number, _creator: Schema.ObjectId }); var User = mongoose.model('User',userSchema); ``` What I want to do is create the new document and return to client, but I want to exclude the 'creator' field from one: ``` app.post('/example.json', function (req, res) { var user = new User({name: 'John', age: 45, _creator: 'some ObjectId'}); user.save(function (err) { if (err) throw err; res.json(200, {user: user}); // how to exclude the _creator field? }); }); ``` At the end I want to send the new created user without _creator field: ``` { name: 'John', age: 45 } ``` Is it possible to make without extra find request to mongoose? P.S:It's preferable to make it by

Accepted Answer

Another way to handle this on the schema level is to override toJSON for the model.

```
UserSchema.methods.toJSON = function() {
  var obj = this.toObject()
  delete obj.passwordHash
  return obj
}
```

I came across this question looking for a way to exclude password hash from the json i served to the client, and `select: false` broke my verifyPassword function because it didn't retrieve the value from the database at all.

How to exclude some fields from the document

Solution

Problem