What is the process for retaining data in mongoose without generating a new database object?

Whenever I try to save data using a bot command, a new object is created every time the data is submitted. I want to ensure that only one object is created, but every time the same user submits data, it should automatically update rather than create a new object.

Here is the code snippet for saving the data:

const subregis = "!reg ign:";
client.on("message", msg => {
  if (msg.content.includes(subregis)){ 
      const user = new User({
        _id: mongoose.Types.ObjectId(),
        userID: msg.author.id,
        nickname: msg.content.substring(msg.content.indexOf(":") + 1) // any content after the : will be the username
      });
      user.save().then(result => console.log(result)).catch(err => console.log(err));
      msg.reply("Data has been submitted successfully") 
  }
});

Here is the schema being used:

const mongoose = require('mongoose');

const Schema = mongoose.Schema;
const profileSchema = new Schema({
    _id: mongoose.Schema.Types.ObjectId,
    userID: String,
    nickname: String,
});

module.exports = mongoose.model("User", profileSchema);

Currently, every time I use the command !reg ign, a new object is added instead of saving/updating the existing user ID.

Answer №1

Before creating a collection, it is important to check if there is existing data related to the user.

Schema.findOne({ userID: msg.author.id }, async (err, data) =>{
   if (data) {
       return msg.reply({content: `you already have a nickname, it's ${data.nicknamd}})
   }
   if (!data) {
       // Create the Schema
   }
})

To update the nickname, you can use the following:

const newdata = Schema.findOneandUpdate({}) ...
//then follow what lpizzini said above

Answer №2

To make changes to an existing User record, consider utilizing the findOneAndUpdate method:

const registration = '!reg ign:';
client.on('message', async (msg) => {
  try {
    if (msg.content.includes(registration)) {
      const updatedUser = await User.findOneAndUpdate(
        { userID: msg.author.id },
        {
          nickname: msg.content.substring(msg.content.indexOf(':') + 1), // any text following the colon will become the username
        },
        {
          new: true, // Provide an updated User instance
        }
      );
      console.log(updatedUser);
      msg.reply('Data has been updated successfully');
    }
  } catch (err) {
    console.log(err);
  }
});

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