If I add new fields directly to my MongoDB database and I forget to add them to my Mongoose schema, how can I alert myself to the problem without it failing silently.
The following example shows that all fields are returned from a query (regardless of the schema) but undefined if you access the key.
var mongoose = require('mongoose');
var user_conn = mongoose.createConnection('mongodb://db/user');
var userSchema = mongoose.Schema({
email: String,
// location: String,
admin: Boolean
});
var User = user_conn.model('User', userSchema);
User.findOne({email: 'foo@bar.com.au'}, function (err, doc) {
if (err) return console.log(err);
console.log(doc);
console.log(doc.email);
console.log(doc.location);
});
Result:
{ _id: 57ce17800c6b25d4139d1f95,
email: 'foo@bar.com.au',
location: 'Australia',
admin: true,
__v: 0 } // <-- console.log(doc);
foo@bar.com.au // <-- console.log(doc.email);
undefined // <-- console.log(doc.location);
I could read each doc key and throw an error if undefined, but is this the only way?
Versions Node.js: 6.5.0 Mongoose: 4.6.0
You can set strict
to false
on the schema so it will save all properties even if they are not in schema:
var userSchema = mongoose.Schema({ email: String, admin: Boolean }, {strict: false});
http://mongoosejs.com/docs/guide.html#strict
In order to get a property which is not in schema you need to use doc.toObject()
and use the returned object, or to use doc.get('location')
Following on from Amiram's answer. I now use lean() to get the object during a query but when I need to update or save it still looks up the schema.
User.findOne({email: 'foo@bar.com.au'}).lean().exec(function (err, doc) {
console.log(doc);
console.log(doc.email);
console.log(doc.location);
});
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