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Replacing a whole block of data in JSON file

I am looking for a way to replace a bunch of data in a JSON file without replacing another part of it:
{
"task": [
{
"id": 5,
"title": "dave",
"description": "test"
},
{
"id": 6,
"title": "fddsfsd",
"description": "fsdfsd"
},
{
"id": 7,
"title": "fddsfssdfsdfd",
"description": "fsdfsd"
},
{
"id": 8,
"title": "fddsfssdfsdfd",
"description": "fsdfsd"
}
],
"compteur": [
{
"id": 8
}
]
}
I manage to get everything that is in between the brackets of "task" in a variable.
My current issue is that I need to replace only what's inside the bracket and not affect the other parts of the file.
This is my code for retrieving the data of "tasks":
function RemoveNode(idToDelete) {
return jsonData.task.filter(function(emp) {
if (emp.id == idToDelete) {
return false;
}
return true;
});
}
var newData = RemoveNode(idToDelete);
arr1 = JSON.stringify(newData, null, 4);
console.log("arr1", arr1);
The console.log gives me:
arr1 [
{
"id": 5,
"title": "dave",
"description": "test"
},
{
"id": 6,
"title": "fddsfsd",
"description": "fsdfsd"
},
{
"id": 8,
"title": "fddsfssdfsdfd",
"description": "fsdfsd"
}
]
I actually need to replace this in the original JSON File but I have absolutely no idea how to achieve this.

You can use the spread operator, this will override the task data with your new filtered data
const removeNode = (idToDelete) =>
jsonData.task.filter((emp) => emp.id != idToDelete);
const newData = RemoveNode(idToDelete);
const updatedJSONData = {...jsonData, task: newData};

If your JSON file is not too large, you could consider changing the task array in your JS object (once you've read or imported it into your program) and then re-writing the json file.
JSON file before the program runs:
{
"task": [
{
"id": 5,
"title": "dave",
"description": "test"
},
{
"id": 6,
"title": "fddsfsd",
"description": "fsdfsd"
},
{
"id": 7,
"title": "fddsfssdfsdfd",
"description": "fsdfsd"
},
{
"id": 8,
"title": "fddsfssdfsdfd",
"description": "fsdfsd"
}
],
"compteur": [
{
"id": 8
}
]
}
Let's say we want to remove task objects with id=6. The code:
const myFileContents = require('./myFile.json');
const fs = require('fs');
const removeIdFromTasks = (taskList,idToRemove) => {
return taskList.filter(task => task.id!=idToRemove);
}
const writeJsonFile = (fileName,content) => {
fs.writeFile(fileName,content,(err) => {
if(err){
console.error(`Error in writing json file: ${e.message}`);
} else {
console.log(`File written`);
}
})
}
myFileContents.task = removeIdFromTasks(myFileContents.task,6);
writeJsonFile(`myFile.json`,JSON.stringify(myFileContents));
The same file after execution:
{
"task": [
{
"id": 5,
"title": "dave",
"description": "test"
},
{
"id": 7,
"title": "fddsfssdfsdfd",
"description": "fsdfsd"
},
{
"id": 8,
"title": "fddsfssdfsdfd",
"description": "fsdfsd"
}],
"compteur": [
{
"id": 8
}]
}

Iterate and group the objects using map function

Check for the decimal id and group them accordingly.
Below are the sample and recommended JSON's
Sample JSON
{
"results": [
{
"name": "Download",
"id": "1.1.1"
},
{
"name": "Download",
"id": "1.2"
},
{
"name": "Download",
"id": "1.3.2"
},
{
"name": "Download",
"id": "2"
},
{
"name": "Download",
"id": "2.3"
},
{
"name": "Download",
"id": "3.2"
},
{
"name": "Download",
"id": "3.5"
},
{
"name": "Download",
"id": "4.2"
}
]
}
Would like to iterate and Re-structure the above JSON into below recommended format.
Logic: Should check the id(with and without decimals) and group them based on the number.
For Example:
1, 1.1, 1.2.3, 1.4.5 => data1: [{id: 1},{id: 1.1}....]
2, 2.3, 2.3.4 => data2: [{id: 2},{id: 2.3}....]
3, 3.1 => data3: [{id: 3},{id: 3.1}]
Recommended JSON
{
"results": [
{
"data1": [
{
"name": "Download",
"id": "1.1.1"
},
{
"name": "Download",
"id": "1.2"
},
{
"name": "Download",
"id": "1.3.2"
}
]
},
{
"data2": [
{
"name": "Download",
"id": "2"
},
{
"name": "Download",
"id": "2.3"
}
]
},
{
"data3": [
{
"name": "Download",
"id": "3.2"
},
{
"name": "Download",
"id": "3.5"
}
]
},
{
"data4": [
{
"name": "Download",
"id": "4.2"
}
]
}
]
}
I have tried the below solution but it doesn't group the object
var formatedJSON = [];
results.map(function(d,i) {
formatedJSON.push({
[data+i]: d
})
});
Thanks in advance.

You can use reduce like this. The idea is to create a key-value pair for each data1, data2 etc so that values in this object are the values you need in the final array. Then use Object.values to get those as an array.
const sampleJson = {"results":[{"name":"Download","id":"1.1.1"},{"name":"Download","id":"1.2"},{"name":"Download","id":"1.3.2"},{"name":"Download","id":"2"},{"name":"Download","id":"2.3"},{"name":"Download","id":"3.2"},{"name":"Download","id":"3.5"},{"name":"Download","id":"4.2"}]}
const grouped = sampleJson.results.reduce((a, v) => {
const key = `data${parseInt(v.id)}`;
(a[key] = a[key] || {[key]: []})[key].push(v);
return a;
},{});
console.log({results: Object.values(grouped)})
One liner / Code-golf:
let s={"results":[{"name":"Download","id":"1.1.1"},{"name":"Download","id":"1.2"},{"name":"Download","id":"1.3.2"},{"name":"Download","id":"2"},{"name":"Download","id":"2.3"},{"name":"Download","id":"3.2"},{"name":"Download","id":"3.5"},{"name":"Download","id":"4.2"}]},k;
console.log({results:Object.values(s.results.reduce((a,v)=>(k=`data${parseInt(v.id)}`,(a[k] = a[k]||{[k]:[]})[k].push(v),a),{}))})

Here you go:
var data = {
"results": [
{
"name": "Download",
"id": "1.1.1"
},
{
"name": "Download",
"id": "1.2"
},
{
"name": "Download",
"id": "1.3.2"
},
{
"name": "Download",
"id": "2"
},
{
"name": "Download",
"id": "2.3"
},
{
"name": "Download",
"id": "3.2"
},
{
"name": "Download",
"id": "3.5"
},
{
"name": "Download",
"id": "4.2"
}
]
};
let newSet = new Set();
data.results.forEach(e => {
let key = e.id.substring(0, e.id.indexOf('.'));
console.log(key);
if (newSet.has(key) == false) {
newSet.add(key);
newSet[key] = [];
}
newSet[key].push(e.id);
});
console.log(newSet);

Here's how you'd do it:
var data = {
"results": [
{
"name": "Download",
"id": "1.1.1"
},
{
"name": "Download",
"id": "1.2"
},
{
"name": "Download",
"id": "1.3.2"
},
{
"name": "Download",
"id": "2"
},
{
"name": "Download",
"id": "2.3"
},
{
"name": "Download",
"id": "3.2"
},
{
"name": "Download",
"id": "3.5"
},
{
"name": "Download",
"id": "4.2"
}
]
};
var newData = {
"results": {}
};
data.results.forEach(item => {
var num = item.id.slice(0, 1);
if (newData.results["data" + num]) {
newData.results["data" + num].push(item);
} else {
newData.results["data" + num] = [item];
}
})
data = newData;
console.log(data);
What this does is it iterates through each item in results, gets the number at the front of this item's id, and checks if an array of the name data-{num} exists. If the array exists, it's pushed. If it doesn't exist, it's created with the item.

let input = getInput();
let output = input.reduce((acc, curr)=>{
let {id} = curr;
let majorVersion = 'name' + id.split('.')[0];
if(!acc[majorVersion]) acc[majorVersion]= [];
acc[majorVersion].push(curr);
return acc;
},{})
console.log(output)
function getInput(){
return [
{
"name": "Download",
"id": "1.1.1"
},
{
"name": "Download",
"id": "1.2"
},
{
"name": "Download",
"id": "1.3.2"
},
{
"name": "Download",
"id": "2"
},
{
"name": "Download",
"id": "2.3"
},
{
"name": "Download",
"id": "3.2"
},
{
"name": "Download",
"id": "3.5"
},
{
"name": "Download",
"id": "4.2"
}
]
}

One solution with RegEx for finer control as it would differentiate easily between 1 and 11.
Also this will make sure that even if the same version comes in end(say 1.9 in end) it will put it back in data1.
let newArr2 = ({ results }) =>
results.reduce((acc, item) => {
let key = "data" + /^(\d+)\.?.*/.exec(item.id)[1];
let found = acc.find(i => key in i);
found ? found[key].push(item) : acc.push({ [key]: [item] });
return acc;
}, []);

javascript map object multidimension

i have this data structure:
tree = [
{
"name": "Men Section",
"categories": [
{
"name": "Clothings",
"Subcategories": [
{
"name": "Jackets",
"products": [
{
"name": "jacket 01",
"price": 100
},
{
"name": "jacket 02",
"price": 140
},
// ..and so on
]
]
},
// ..and so on
]
} // ..and so on
]
how can i add new property in products item isSelected: false in javascript (ES5 or ES6 is fine) so the object will be
{
"name": "jacket 01",
"price": 100,
"isSelected": false
}
?

It could be useful, it works for me
tree.forEach(base => {
base.categories.forEach(categories => {
categories.Subcategories.forEach(subCategory =>{
subCategory.products.forEach(product => product.isSelected = false)
})
});
});

so yeah, i should traverse deep to the object with nested foreach. i came up with this:
tree.categories.forEach(function (category) {
category.subcategories.forEach(function (subcategory) {
subcategory.products.forEach(function (product) {
product.isSelected = false;
})
})
})
thanks for the enlightment

filter on the basis of a value in an array in where

I'm querying data, where the structure is something like this.
I have two models, FoodDrinks and Cuisines. They have many to many relation.
Now on the following query
{
"filter": {
"include": "cuisines"
}
}
I am getting the following results.
[
{
"id": 1,
"name": "Biryani",
"cuisines": [
{
"id": 1,
"name": "Mughlai"
},
{
"id": 2,
"name": "North Indian"
},
{
"id": 3,
"name": "Afghani"
}
]
},
{
"id": 2,
"name": "Chhole Bhature",
"cuisines": [
{
"id": 2,
"name": "North Indian"
}
]
},
{
"id": 3,
"name": "Amritsari Naan",
"cuisines": [
{
"id": 2,
"name": "North Indian"
},
{
"id": 6,
"name": "Punjabi"
},
]
}
]
Now I want only those food drinks which have cuisines from the following array.
let cuisinesIDs = ["1", "2"]
What will the following query for that?

I guess something like the below should work:
{
"filter": {
"include": "cuisines"
},
"where": {
"cuisines.id": {
"inq": cuisinesIDs
}
}
}

It might be the same answer as #Behrooz, but I would try:
{
"filter": {
"include": {
relation: 'cuisines',
scope: {
where: {
id: {inq: cuisinesIDs}
}
}
}
}
}

Javascript - grab value inside of an object nested within an object

I am trying to grab a value of a key inside of an object in an array which itself is an object in an array.
Here is what it looks like:
var books = [
{
"title": "title1",
"author": "author1",
"users": [
{
"id": 1,
"name": "Isidro"
},
{
"id": 4,
"name": "Jose Miguel"
},
{
"id": 3,
"name": "Trinidad"
}
]
},
{
"title": "title2",
"author": "author2",
"users": [
{
"id": 4,
"name": "Jose Miguel"
},
{
"id": 5,
"name": "Beatriz"
},
{
"id": 6,
"name": "Rosario"
}
]
},
What I am trying to do, 2 things:
First:
when I click on a user name in the HTML, I want to match the name clicked with the same user name in all the objects it is present in.
Second:
display the title of the books this user name is present in.
For example: when I click on Jose Miguel I want to see the 2 books he has read.
At the moment I have this:
var btnUser = document.querySelectorAll(".individualUsers");
for (var i = 0; i < btnUser.length; i++) {
btnUser[i].addEventListener("click", function() {
var clickedUser = this.innerText
var userBooks = books
.filter(x => x.users.name.indexOf(clickedUser) > -1)
.map(x => ` <li>${x.title}</li> <li>${x.author}</li>`);
console.log(clickedUser);
});
}
My problem is x.users.name.indexOf(clickedUser)is not accessing the user name.

You need to search inside the users array as well, one neat way is to do so with Array.some that return true if some of the conditional is true.
const books = [{
"title": "title1",
"author": "author1",
"users": [{
"id": 1,
"name": "Isidro"
},
{
"id": 4,
"name": "Jose Miguel"
},
{
"id": 3,
"name": "Trinidad"
}
]
},
{
"title": "title2",
"author": "author2",
"users": [{
"id": 4,
"name": "Jose Miguel"
},
{
"id": 5,
"name": "Beatriz"
},
{
"id": 6,
"name": "Rosario"
}
]
}
];
const clickedUser = 'Jose Miguel';
var userBooks = books
.filter(x => x.users.some(user => user.name.indexOf(clickedUser) > -1));
console.log(userBooks);