Merging Area objects based on Similar Id - node.js

Question

I am getting this output :
"Area":
[{
"AreaId": 2,
"AreaName":xyz,
"Data":
[{
"AssetId":somevalue,
"ActionId":somevalue,
}]
},
{
"AreaId": 2,
"AreaName":xyz,
"Data":
[{
"AssetId":somevalue,
"ActionId":somevalue,
}]
}]
But I want it merging to be like this :
"Area":[{
"AreaId": 2,
"AreaName":xyz,
"Data":
[{
"AssetId":somevalue,
"ActionId":somevalue,
},
{
"AssetId":someothervalue,
"ActionId":someothervalue,
}]

Answer 1

You could use groupBy of loadash. Code will look something like this
const {groupBy} = require("lodash");
const input = [
{
AreaId: 2,
AreaName: "Bedroom",
Data: [
{
Id: 7,
AssetId: 1,
Asset: "TubeLight",
ActionId: 1,
Action: "Clean",
TenantChargeBack: 0,
TenantChargeType: "%",
TenantChargeValue: 25,
Notes: "",
FilePath: "AWS_Bucket_Name/filename.jpg"
}
]
},
{
AreaId: 2,
AreaName: "Bedroom",
Data: [
{
Id: 8,
AssetId: 1,
Asset: "Bed",
ActionId: 3,
Action: "Repair",
TenantChargeBack: 1,
TenantChargeType: "%",
TenantChargeValue: 50,
Notes: "",
FilePath: "AWS_Bucket_Name/filename.jpg"
}
]
},
{
AreaId: 3,
AreaName: "Bathroom",
Data: [
{
Id: 9,
AssetId: null,
Asset: null,
ActionId: 2,
Action: "Replace",
TenantChargeBack: 1,
TenantChargeType: "$",
TenantChargeValue: 100,
Notes: "",
FilePath: "AWS_Bucket_Name/filename.jpg"
}
]
},
{
AreaId: 3,
AreaName: "Bathroom",
Data: [
{
Id: 10,
AssetId: 6,
Asset: "Jaar",
ActionId: 3,
Action: "Repair",
TenantChargeBack: 1,
TenantChargeType: "$",
TenantChargeValue: 100,
Notes: "",
FilePath: "AWS_Bucket_Name/filename.jpg"
}
]
},
{
AreaId: 2,
AreaName: "Bedroom",
Data: [
{
Id: 11,
AssetId: null,
Asset: null,
ActionId: 1,
Action: "Clean",
TenantChargeBack: 1,
TenantChargeType: "$",
TenantChargeValue: 50,
Notes: "",
FilePath: null
}
]
}
];
const groupedData = groupBy(input, i => i.AreaId);
const result = Object.keys(groupedData).map(j => {
const combined = groupedData[j];
return combined.reduce((a, b) => {
return {
"AreaId": a.AreaId,
"AreaName": a.AreaName,
"Data": a.Data.concat(b.Data)
};
})
});
console.log(JSON.stringify(result));