Question

83

Mongoose stopped accepting callbacks for some of its functions

rated 0 times [ 86] [ 3] / answers: 1 / hits: 25715 / 1 Year ago, mon, february 27, 2023, 12:00:00

I've been using callbacks for .save() and .findOne() for a few days now and just today I encounter these errors:

throw new MongooseError('Model.prototype.save() no longer accepts a callback')



MongooseError: Model.prototype.save() no longer accepts a callback

and

MongooseError: Model.findOne() no longer accepts a callback

It's really awkward given that callbacks are still accepted in the docs at least for .findOne().

app.post("/register", (req, res) => {

    const newUser = new User({

        email: req.body.username,

        password: req.body.password

    });



    newUser.save((err) => {

        if (err) console.log(err)

        else res.render("secrets");

    });

});

This is what used to work for me, using express and mongoose. Please let me know how to fix it.

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

ryans

Add To Favorites

Follow

Total Points: 514

Total Questions: 92

Total Answers: 121

Location: Liberia

Member since Fri, Oct 22, 2021

3 Years ago

answered 2 Years ago stacie · Accepted Answer

MongooseError: Model.find() no longer accepts a callback

Since the callback function has been deprecated from now onwards.
If you are using these functions with callbacks, use async/await or promises if async functions don't work for you.

app.get("/articles", async (req, res) => {

  try {

    const articles = await Article.find({ });

    res.send(articles);

    console.log(articles);

  } catch (err) {

    console.log(err);

  }

});