MongoDB connection with Next js
In model folder create a file user.js
for schema
import mongoose from 'mongoose'
const UserSchema = new mongoose.Schema({
name: String,
email: String
})
module.exports = mongoose.models.User || mongoose.model('User', UserSchema)
create a file in root lib. MongoDB.js
import mongoose from 'mongoose'
const MONGODB_URI = "mongodb://localhost:27017"
if (!MONGODB_URI) {
throw new Error(
'Please define the MONGODB_URI environment variable inside .env.local'
)
}
/**
* Global is used here to maintain a cached connection across hot reloads
* in development. This prevents connections growing exponentially
* during API Route usage.
*/
let cached = global.mongoose
if (!cached) {
cached = global.mongoose = { conn: null, promise: null }
}
async function dbConnect () {
if (cached.conn) {
return cached.conn
}
if (!cached.promise) {
const opts = {
useNewUrlParser: true,
useUnifiedTopology: true,
bufferCommands: false,
bufferMaxEntries: 0,
useFindAndModify: true,
useCreateIndex: true
}
cached.promise = mongoose.connect(MONGODB_URI, opts).then(mongoose => {
return mongoose
})
}
cached.conn = await cached.promise
return cached.conn
}
export default dbConnect
in API folder
import User from '../../models/User'
export default async function handler (req, res) {
const { method } = req
await dbConnect()
switch (method) {
case 'GET':
try {
const users = await User.find({})
res.status(200).json({ success: true, data: users })
} catch (error) {
res.status(400).json({ success: false })
}
break
case 'POST':
try {
const user = await User.create(req.body)
res.status(201).json({ success: true, data: user })
} catch (error) {
res.status(400).json({ success: false })
}
break
default:
res.status(400).json({ success: false })
break
}
}
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