How can I read MongoDB data using discord.js? - database

Question

I've made a coin system and am trying to read how many coins the user has, but for some reason it's coming back as 'undefined', done anyone know why?
else if (command === 'coins') {
const userData = await CoinSystem.find({userID : message.member.user.id});
if (!userData.length) {
const createdData = new CoinSystem({
userID : message.member.user.id,
userName : message.member.user.tag,
coins : 0
})
await createdData.save().catch(e => console.log(e));
await message.channel.send("You have 0 coins.");
return;
}
if (userData.length) {
await message.channel.send(await userData.find(coins));
}
Creating the data.
const mongoose = require('mongoose');
const coinSchema = new mongoose.Schema({
userID : {
type : mongoose.SchemaTypes.String,
required : true
},
userName : {
type : mongoose.SchemaTypes.String,
required : true
},
coins : {
type : mongoose.SchemaTypes.Number,
required : true,
default : 0
}
})
module.exports = mongoose.model('CoinSystem', coinSchema)

Answer 1

First, try using await CoinSystem.findOne({userID : message.member.user.id}); instead of await CoinSystem.find({userID : message.member.user.id});
Second, try using (!userData) and (userData) instead of (!userData.length) and (userData.length)
Third, try using
await message.channel.send({ content: `${userData.coins}` });
instead of await message.channel.send(await userData.find(coins));
The final code is:
const userData = await CoinSystem.findOne({userID : message.member.user.id});
if (!userData) {
const createdData = new CoinSystem({
userID : message.member.user.id,
userName : message.member.user.tag,
coins : 0
})
await createdData.save().catch(e => console.log(e));
await message.channel.send({ content: "You have 0 coins."});
return;
}
if (userData) {
await message.channel.send({ content: `You have ${userData.coins} coins` });
}
Notes --> the reason of using:
message.channel.send({ content: `You have ${userData.coins} coins` })
instead of:
message.channel.send(`You have ${userData.coins} coins`)
is because of Discord.js v13.
If yours is discord.js v12, then u should use:
message.channel.send(`You have ${userData.coins} coins`)