ustk-todolist/routes/lists.js

const express = require("express");
const mongoose = require("mongoose");

const router = express.Router();

const TodoList = mongoose.model("TodoList");

const asyncHelper = require("../asyncHelper");

// index
router.get(
  "/",
  asyncHelper(async (req, res) => {
    const lists = await TodoList.find({})
      .populate("todos")
      .exec();
    res.json(lists);
  })
);

// create
router.post(
  "/",
  asyncHelper(async (req, res) => {
    const { name } = req.body;
    const newList = new TodoList({ name });
    await newList.save();
    res.json({ success: true });
  })
);

module.exports = router;