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I want to map one json data to a new javascript object like following. Here the json data is dynamic and can have more files with more users. The group information is new and it depends on parent-child information. Can anyone please help me out? Thank you for your time.
Before:
{
"userinfo": {
"/home/user/main/sub/info/1stfile.txt": {
"John": "something",
"Mike": "something",
"Merry": "something",
"Susan": "something"
},
"/home/user/main/info/2ndfile.txt": {
"Mulan": "something",
"James": "something"
},
"/home/user/main/info/3rdfile.txt": {
"Nancy": "something"
},
"/home/user/main/4thfile.txt": {
"Kamal": "something",
"Xian": "something",
"Mila": "something"
}
}
}
After:
{
"name": "main",
"children": [
{
"name": "1stfile",
"children": [
{
"name": "John",
"group": "1"
},
{
"name": "Mike",
"group": "1"
},
{
"name": "Merry",
"group": "1"
},
{
"name": "Susan",
"group": "1"
}
],
"group": 1
},
{
"name": "2ndfile",
"children": [
{
"name": "Mulan",
"group": 2
},
{
"name": "James",
"group": 2
}
],
"group": 2
},
{
"name": "3rdfile",
"children": [
{
"name": "Nancy",
"group": 3
}
],
"group": 3
},
{
"name": "4thfile",
"children": [
{
"name": "Kamal",
"group": 4
},
{
"name": "Xian",
"group": 4
},
{
"name": "Mila",
"group": 4
}
],
"group": 4
}
],
"group": 0
}
I was trying to build one block of parent-child by using following code
var jsonData = json["userinfo"];
var keys = Object.keys(jsonData);
console.log(keys);
let data = {};
for (var j = 0; j < keys.length; j++) {
let g = 1;
data[j] = { name: keys[j], group: g++ };
}
console.log(data);
Which is giving following output
{
0: {
"name": "/home/user/main/sub/info/1stfile.txt",
"group": 1
},
1: {
"name": "/home/user/main/info/2ndfile.txt",
"group": 1
},
2: {
"name": "/home/user/main/info/3rdfile.txt",
"group": 1
},
3: {
"name": "/home/user/main/4thfile.txt",
"group": 1
}
}
The value is assigning properly but is creating extra keys (0,1,2,3)!
I want to map one json data to a new javascript object like following. Here the json data is dynamic and can have more files with more users. The group information is new and it depends on parent-child information. Can anyone please help me out? Thank you for your time.
Before:
{
"userinfo": {
"/home/user/main/sub/info/1stfile.txt": {
"John": "something",
"Mike": "something",
"Merry": "something",
"Susan": "something"
},
"/home/user/main/info/2ndfile.txt": {
"Mulan": "something",
"James": "something"
},
"/home/user/main/info/3rdfile.txt": {
"Nancy": "something"
},
"/home/user/main/4thfile.txt": {
"Kamal": "something",
"Xian": "something",
"Mila": "something"
}
}
}
After:
{
"name": "main",
"children": [
{
"name": "1stfile",
"children": [
{
"name": "John",
"group": "1"
},
{
"name": "Mike",
"group": "1"
},
{
"name": "Merry",
"group": "1"
},
{
"name": "Susan",
"group": "1"
}
],
"group": 1
},
{
"name": "2ndfile",
"children": [
{
"name": "Mulan",
"group": 2
},
{
"name": "James",
"group": 2
}
],
"group": 2
},
{
"name": "3rdfile",
"children": [
{
"name": "Nancy",
"group": 3
}
],
"group": 3
},
{
"name": "4thfile",
"children": [
{
"name": "Kamal",
"group": 4
},
{
"name": "Xian",
"group": 4
},
{
"name": "Mila",
"group": 4
}
],
"group": 4
}
],
"group": 0
}
I was trying to build one block of parent-child by using following code
var jsonData = json["userinfo"];
var keys = Object.keys(jsonData);
console.log(keys);
let data = {};
for (var j = 0; j < keys.length; j++) {
let g = 1;
data[j] = { name: keys[j], group: g++ };
}
console.log(data);
Which is giving following output
{
0: {
"name": "/home/user/main/sub/info/1stfile.txt",
"group": 1
},
1: {
"name": "/home/user/main/info/2ndfile.txt",
"group": 1
},
2: {
"name": "/home/user/main/info/3rdfile.txt",
"group": 1
},
3: {
"name": "/home/user/main/4thfile.txt",
"group": 1
}
}
The value is assigning properly but is creating extra keys (0,1,2,3)!
Share Improve this question edited Nov 15, 2019 at 16:04 junwen-k 3,6741 gold badge17 silver badges29 bronze badges asked Nov 15, 2019 at 15:40 NiharNihar 3732 gold badges6 silver badges20 bronze badges 4- 1 Can you show us what have you attempted so far ? – junwen-k Commented Nov 15, 2019 at 15:42
- I have included the code snippet. – Nihar Commented Nov 15, 2019 at 15:58
-
Can you provide a valid before and after ? A valid example of
beforeandafter– junwen-k Commented Nov 15, 2019 at 16:08 - This is a valid example for my task. I've just replaced the user information with "something". – Nihar Commented Nov 15, 2019 at 16:10
1 Answer
Reset to default 2Assuming you need something like this.
You can utilize Array.map() and Object.keys() function for your operation.
<script>
const beforeJSON = `{
"userinfo": {
"/home/user/main/sub/info/1stfile.txt": {
"John": "something",
"Mike": "something",
"Merry": "something",
"Susan": "something"
},
"/home/user/main/info/2ndfile.txt": {
"Mulan": "something",
"James": "something"
},
"/home/user/main/info/3rdfile.txt": {
"Nancy": "something"
},
"/home/user/main/4thfile.txt": {
"Kamal": "something",
"Xian": "something",
"Mila": "something"
}
}
}`
const before = JSON.parse(beforeJSON);
const filenames = Object.keys(before.userinfo);
const after = {
name: 'main',
children: [],
group: 0,
}
const children = filenames.map((filename, idx) => {
const innerChildren = Object.keys(before.userinfo[filename]).map((n) => ({
name: n,
group: idx + 1,
}))
return ({
name: filename,
children: innerChildren,
group: idx + 1,
});
})
after.children = children;
console.log(after);
</script>
Please format your code next time before posting another question.
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