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Version: v4

MongoDB

The MongoDB adapter does not handle connections automatically, so you will have to make sure that you pass the Adapter a MongoClient that is connected already. Below you can see an example how to do this.

Usage

  1. Install the necessary packages
npm install next-auth @next-auth/mongodb-adapter mongodb
  1. Add lib/mongodb.js
// This approach is taken from https://github.com/vercel/next.js/tree/canary/examples/with-mongodb
import { MongoClient } from "mongodb"

const uri = process.env.MONGODB_URI
const options = {
useUnifiedTopology: true,
useNewUrlParser: true,
}

let client
let clientPromise

if (!process.env.MONGODB_URI) {
throw new Error("Please add your Mongo URI to .env.local")
}

if (process.env.NODE_ENV === "development") {
// In development mode, use a global variable so that the value
// is preserved across module reloads caused by HMR (Hot Module Replacement).
if (!global._mongoClientPromise) {
client = new MongoClient(uri, options)
global._mongoClientPromise = client.connect()
}
clientPromise = global._mongoClientPromise
} else {
// In production mode, it's best to not use a global variable.
client = new MongoClient(uri, options)
clientPromise = client.connect()
}

// Export a module-scoped MongoClient promise. By doing this in a
// separate module, the client can be shared across functions.
export default clientPromise
  1. Add this adapter to your pages/api/[...nextauth].js next-auth configuration object.
import NextAuth from "next-auth"
import { MongoDBAdapter } from "@next-auth/mongodb-adapter"
import clientPromise from "lib/mongodb"

// For more information on each option (and a full list of options) go to
// https://next-auth.js.org/configuration/options
export default NextAuth({
adapter: MongoDBAdapter(clientPromise),
...
})