Edit a JSON object - node.js

Question

I retrieved a JSON object from a local database, I want to edit a value (invItems) and add a new value to it (filed[filed.invItems]), then upload it back to the database, but it does not seem to work (the JSON does not seem to change)
async function invPut(itemID, message) {
var filed = await frenzyDB.getKey(id + "_invcache");
console.log("Before: " + filed)
newInvItems = filed.invItems + 1;
filed.invItems = newInvItems;
filed[filed.invItems] = itemID;
console.log("After: " + filed);
await frenzyDB.addKey(id + "_invcache", filed)
}
Console Output:
Before: {"invItems":0}
After: {"invItems":0}
It shows no errors, but the JSON doesnt change. Am I doing something wrong? If so, what can I do to fix it?
Thanks for all your help!
Notes:
frenzyDB is just a javascript file that deals with a standard REPL.it Database
Code of frenzyDB:
const Database = require("#replit/database")
const db = new Database()
async function addKey(key, value) {
await db.set(key, value).then(() => {return;});
}
async function getKey(key) {
return await db.get(key).then(value => {return value;});
}
function listAllKeys() {
db.list().then(keys => {return keys;});
}
async function hasKey(key) {
var keys = await listAllKeys();
if (keys.includes(key)) {
return true;
} else {
return false;
}
}
async function removeKey(key) {
await db.delete(key).then(() => {return;});
}
module.exports = {
addKey,
getKey,
listAllKeys,
hasKey,
removeKey
};
Edit: Latest code:
async function invPut(itemID, message) {
await init(message.author.id);
var filed = await frenzyDB.getKey(message.author.id + "_invcache");
console.log(filed)
const result = {};
result.invItems = (filed['invItems'] + 1) || 1;
result.hasOwnProperty(filed.invItems) ? result[filed.invItems + 1] = itemID : result[filed.invItems] = itemID;
console.log(result);
frenzyDB.addKey(message.author.id + "_invcache", result)
message.reply("A **"+ itemIDs[itemID].name + "** was placed in your inventory");
return true;
}
EDIT 2: Latest Console Output:
{ '4': 3, invItems: 5 }
{ '5': 3, invItems: 6 }
Any help will be appreciated!
Thanks

Answer 1

Try this
// Demo Data
const itemID = 10;
var filed = { "invItems" : 0 };
// Real function
console.log("Before: " + JSON.stringify(filed));
const result = {};
result.invItems = (filed['invItems'] + 1) || 1;
result.hasOwnProperty(filed.invItems) ? result[filed.invItems + 1] = itemID : result[filed.invItems] = itemID;
console.log("After: " + JSON.stringify(result));
The result I get is
Before: {"invItems":0}
After: {"0":10,"invItems":1}
You would then of course use result to store the data away in the DB.
async function invPut(itemID, message) {
// Typo?
var filed = await frenzyDB.getKey(itemID + "_invcache");
console.log("Before: " + filed)
const result = {};
result.invItems = (filed['invItems'] + 1) || 1;
result.hasOwnProperty(filed.invItems) ? result[filed.invItems + 1] = itemID : result[filed.invItems] = itemID;
console.log("After: " + result);
// Typo?
await frenzyDB.addKey(itemID + "_invcache", result)
}
Answer Edit:
const result = { ...filed };
result.invItems = (filed['invItems'] + 1) || 1;
result.hasOwnProperty(filed.invItems) ? result[filed.invItems + 1] = itemID : result[filed.invItems] = itemID;
console.log(JSON.stringify(result));

Answer 2

maybe this will help you
const json = fs.readFileSync(`${__dirname}/data/data.json`, "utf-8");
const inputData = JSON.parse(json);
inputData.push({input: 'front'}) // creates new element for data.json
-------------------------------------------
array.push({front: 'front', back: 'back'});