Mongoose ODM, change variables before saving Mongoose ODM, change variables before saving express express

Mongoose ODM, change variables before saving


node.js express mongoose odm

In your Schema.pre('save', callback) function, this is the document being saved, and modifications made to it before calling next() alter what's saved.

node.js express mongoose odm

Another option is to use Getters. Here's an example from the website:

function toLower (v) {  return v.toLowerCase();}var UserSchema = new Schema({  email: { type: String, set: toLower } });

http://mongoosejs.com/docs/getters-setters.html

node.js express mongoose odm 

var db = require('mongoose');var schema = new db.Schema({  foo:     { type: String }});schema.pre('save', function(next) {  this.foo = 'bar';  next();});db.model('Thing', schema);

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