relations in mongoose with custom field

Question

I\'ve seen many examples about mongoose and relations, but how can I create a reference to another entity into a custom field ?

var mongoose = require(\'mongoose         


        

Answer 1

No, you can't. Mongoose always use _id field to link documents. But...

You can set your own _id for each document, using any datatype you want. There are only two restrictions:

• it should be unique
• it should not be changed during document's lifetime

So, instead of adding new slugname field, use author's _id as a slugname:

var Author = m.model('Author', new m.Schema({
  _id: String, // <-- slugname
  name: String
}));
var Book = m.model('Book', new m.Schema({
  title: String,
  author: { type: String, ref: 'Author' }
}));