October 15, 2025
Use Mongoose with Next-Auth Without an Adapter! 🚀
title: "Use Mongoose with Next-Auth Without an Adapter!" date: "2024-02-03" description: "A clean and minimal CRUD setup using MongoDB + Next.js."
MongoDB CRUD in Next.js (App Router)
A small, readable CRUD example you can copy into any project.
1. DB Connection
// lib/db.ts
import mongoose from "mongoose";
export async function connectDB() {
if (mongoose.connection.readyState >= 1) return;
await mongoose.connect(process.env.MONGO_URL!);
}
2. Model
// models/Todo.ts
import { Schema, model, models } from "mongoose";
const TodoSchema = new Schema({
title: String,
done: Boolean,
});
export default models.Todo || model("Todo", TodoSchema);
3. API Routes
// app/api/todos/route.ts
import { NextResponse } from "next/server";
import Todo from "@/models/Todo";
import { connectDB } from "@/lib/db";
export async function GET() {
await connectDB();
const todos = await Todo.find();
return NextResponse.json(todos);
}
export async function POST(req: Request) {
await connectDB();
const body = await req.json();
const todo = await Todo.create(body);
return NextResponse.json(todo);
}
4. Client Page
"use client";
import { useEffect, useState } from "react";
export default function Page() {
const [todos, setTodos] = useState([]);
useEffect(() => {
fetch("/api/todos")
.then((r) => r.json())
.then(setTodos);
}, []);
return (
<div className="p-4">
<h1 className="text-xl font-bold mb-2">Todos</h1>
{todos.map((t) => (
<div key={t._id} className="border p-2 mb-1 rounded">
{t.title}
</div>
))}
</div>
);
}
A simple CRUD to showcase your MDX template.