Prior
This object consists of multiple rows:
{
"functions": [
{
"package_id": "2",
"module_id": "2",
"data_id": "2"
},
{
"package_id": "1",
"module_id": "1",
"data_id": "2"
},
{
"package_id": "2",
"module_id": "3",
"data_id": "3"
}
]
}
Intended outcome
I aim to transform this into a "nested" Object as shown below, eliminating any duplicates:
{
"packages": [
{
"package_id": "2",
"modules": [
{
"module_id": "2",
"data": [
{
"data_id": "2"
}
]
},
{
"module_id": "3",
"data": [
{
"data_id": "3"
}
]
}
]
},{
"package_id": "1",
"modules": [
{
"module_id": "1",
"data": [
{
"data_id": "2"
}
]
}
]
}
]
}
I've experimented with nested loops and creating arrays and objects, but it led to either duplicates or merging objects. Is there a more generic approach to achieve this using JavaScript? (Specifically for an Angular (6) project.
Instance 1
getFunctionPackage() {
var fList = this.functionList;
var dArr = [];
var dObj = {};
var pArr = [];
var pObj = {};
var mArr = [];
var mObj = {};
for (var key in fList) {
pObj['package_id'] = fList[key]['package_id'];
mObj['module_id'] = fList[key]['module_id'];
dObj['data_id'] = fList[key]['data_id'];
for (var i = 0; i < pArr.length; i++) {
if (pArr[i].package_id != pObj['package_id']) {
pArr.push(pObj);
}
for (var x = 0; x < mArr.length; x++) {
if (pArr[i]['modules'][x].module_id != mObj['module_id']) {
mArr.push(mObj);
}
for (var y = 0; y < dArr.length; y++) {
if (pArr[i]['modules'][x]['datas'][y].data_id != dObj['data_id']) {
dArr.push(dObj);
}
}
}
}
if (dArr.length == 0) {
dArr.push(dObj);
}
mObj['datas'] = dArr;
if (mArr.length == 0) {
mArr.push(mObj);
}
pObj['modules'] = mArr;
if (pArr.length == 0) {
pArr.push(pObj);
}
dObj = {};
mObj = {};
pObj = {};
}
}
Instance 2: Leads to skipping because of boolean values
var fList = this.functionList;
var dArr = [];
var dObj = {};
var pArr = [];
var pObj = {};
var mArr = [];
var mObj = {};
var rObj = {};
for (var key in fList) {
pObj['package_id'] = fList[key]['package_id'];
mObj['module_id'] = fList[key]['module_id'];
dObj['data_id'] = fList[key]['data_id'];
var pfound = false;
var mfound = false;
var dfound = false;
for (var i = 0; i < pArr.length; i++) {
if (pArr[i].package_id == pObj['package_id']) {
for (var x = 0; x < mArr.length; x++) {
if (pArr[i]['modules'][x].module_id == mObj['module_id']) {
for (var y = 0; y < dArr.length; y++) {
if (pArr[i]['modules'][x]['datas'][y].data_id == dObj['data_id']) {
dfound = true;
break;
}
}
mfound = true;
break;
}
}
pfound = true;
break;
}
}
if (!dfound) {
dArr.push(dObj);
mObj['datas'] = dArr;
dObj = {};
}
if (!mfound) {
mArr.push(mObj);
pObj['modules'] = mArr;
mObj = {};
}
if (!pfound) {
pArr.push(pObj);
pObj = {};
}
dArr = [];
mArr = [];
}
rObj['packages'] = pArr;
console.log(rObj);