How to update a data in mongodb using nodejs

Question

I am trying to update a data in mongodb using nodejs. I want the total data to be updated by +1 once a user creates a transaction. But I don't have any idea of it. Because there is no value coming back. like req.body, that I can pass in.

var UserSchema = new mongoose.Schema({
  total: { type: Number, default: 0 }
});

UserSchema.plugin(passortLocalMongoose);
module.exports = mongoose.model("User", UserSchema);

app.post("/bitcoin", isLoggedIn, function(req, res) {
  client.createTransaction({ currency1: "USD", currency2: "BTC", amount: 500 },
    function(err, result) {
      if (err) {
        console.log(err);
      } else {
        User.findByIdAndUpdate(req.params.id, { total: +1 }, function(error,updated) {
          if (error) {
            console.log("error occured " + error);
            return res.redirect("/dashboard");
          } else {
            console.log("total updated" + updated);
          }
        });
        var coinPayment = result;
        res.redirect(coinPayment.status_url);
      }
    }
  );
});

It console.logs this below and it does not update any work around for this

total updated null

Seems that req.params.id is not in the collection. So the findByIdAndUpdate find nothing. — Orelsanpls
– Orelsanpls, Commented Mar 13, 2018 at 11:07

Rahul Sharma · Accepted Answer · 2018-03-13 11:12:54Z

3

Try this, you have not declared id in params.

app.post('/bitcoin/:id',function(req, res){ /* Some stuff */})

Update Query

User.update({_id : req.params.id},{$inc: {total:1}})

answered Mar 13, 2018 at 11:12

Rahul Sharma

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1 Comment

Fillipo Sniper Over a year ago

yeah thanks it is working correctly +1 to you. I had no knowledge of the $inc. :) @Rahul Sharma

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