Mongoose use only createdAt timestamp - node.js

Question

I have the following message schema in mongoose:
var messageSchema = mongoose.Schema({
userID: { type: ObjectId, required: true, ref: 'User' },
text: { type: String, required: true }
},
{
timestamps: true
});
Is there anyway to ignore the updatedAt timestamp? Messages won't be updated so updatedAt will be wasted space

Answer 1

Maybe even better with Mongoose v5 is to do the following;
const schema = new Schema({
// Your schema...
}, {
timestamps: { createdAt: true, updatedAt: false }
})

Answer 2

Edit I've amended the answer to reflect the better option to use the default as per #JohnnyHK
You can handle this yourself by declaring the createdAt (or whatever you want to call it) in your schema:
mongoose.Schema({
created: { type: Date, default: Date.now }
...
Alternatively we can also update values on new document in a pre save hook:
messageSchema.pre('save', function (next) {
if (!this.created) this.created = new Date;
next();
})
Along those lines is also the flag isNew which you can use to check if a document is new.
messageSchema.pre('save', function (next) {
if (this.isNew) this.created = new Date;
next();
})

Answer 3

Older topic but there may be a better option depending on your schema...
If you're sticking with the default of having mongodb/mongoose auto-gen _id, there's already a timestamp built in. If all you need is "created" and not "updated" just use...
document._id.getTimestamp();
From MongoDB docs here...
ObjectId.getTimestamp()
And Here... stackoverflow

Answer 4

Mongoose timestamp interface has these optional fields.
interface SchemaTimestampsConfig {
createdAt?: boolean | string;
updatedAt?: boolean | string;
currentTime?: () => (Date | number);
}
We can pass the boolean for the field we want(createdAt: true and updatedAt: true will add both fields).
We can use the currentTime function to overwrite the date format.
example:
import mongoose from 'mongoose';
const { Schema } = mongoose;
const annotationType = ['NOTES', 'COMMENTS'];
const referenceType = ['TASKS', 'NOTES'];
const AnnotationSchema = new Schema(
{
sellerOrgId: {
type: String,
required: true,
},
createdById: {
type: String,
required: true,
},
annotationType: {
type: String,
enum: annotationType,
},
reference: {
id: { type: String, index: true },
type: {
type: String,
enum: referenceType,
},
},
data: Schema.Types.Mixed,
},
{ timestamps: { createdAt: true },
);
const AnnotationModel = mongoose.models.annotation || mongoose.model('annotation', AnnotationSchema);
export { AnnotationModel, AnnotationSchema };