I have problem using uuid
with new mongoose.Schema
. I use it to generate unique key for a device and save it to the MongoDb using Node.js. the problem is that it uses the same UUID every time.
This is the model:
const mongoose = require('mongoose');
const uuid = require('uuid/v4');
const DeviceSchema = new mongoose.Schema({
deviceNumberHash: {
type: String,
required: true
},
receivingKey: {
type: String,
default: uuid()
}...
});
And this is what is saved in MongoDb:
Any idea what's wrong?
You're calling uuid
and passing its return value in as the default to use.
Instead, pass in the function (by not putting ()
after it):
const DeviceSchema = new mongoose.Schema({
deviceNumberHash: {
type: String,
required: true
},
receivingKey: {
type: String,
default: uuid // <========== No ()
}...
});
The default can be a function per the docs (an example there uses default: Date.now
to provide a default for a date field, for instance).
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