filter JSON object based on specific value present inside nested object

Question

Hi I am trying to filter my JSON response to only get those values which are >=0.

My response is below:

  {
    "response": [{
            "countryId": {
                "id": "10050020025",
                "idScheme": "externalId"
            },
            "processedDateTime": "2019-11-07 05:39:09",
            "AAE": [{
                "amount": "1000",
                "currencyCode": "USD"
            }],
            "TAE": [{
                "amount": "0",
                "currencyCode": "USD"
            }]
        },
        {
            "countryId": {
                "id": "10291520071",
                "idScheme": "InternalId"
            },
            "processedDateTime": "2019-02-03 08:21:22",
            "AAE": [{
                "amount": "0",
                "currencyCode": "USD"
            }],
            "TAE": [{
                "amount": "-2001",
                "currencyCode": "USD"
            }]
        }
    ]
}

I am trying to achieve:

{
"response": [{
        "countryId": {
            "id": "10050020025",
            "idScheme": "externalId"
        },
        "processedDateTime": "2019-11-07 05:39:09",
        "AAE": [{
            "amount": "1000",
            "currencyCode": "USD"
        }]
    },
    {
        "countryId": {
            "id": "10291520071",
            "idScheme": "InternalId"
            },
            "processedDateTime": "2019-02-03 08:21:22",
        }
    ]
}

I am trying to use map & filter from es6 to achieve this but not good with don't know how i can do that. so far i am trying some hardcoded approach as.

const outputResponse = response
.map(value => value)
.filter(value => value.AAE[0].amount !== '0') 

but it will remove whole object which don't have amount '0'.

Any help be appreciated.

Answer 1

You will just need an Array#map() method call to map all the response objects and remove the AAE and TAE or targeted keys values which has amount < 0:

let keys = ["AAE", "TAE"];

let result = data.response.map(val => {
  keys.forEach(key => {
    if (val[key] && val[key].some(x => +x.amount <= 0)) {
      delete val[key];
    }
  });
  return val;
});

Demo:

 let keys = ["AAE", "TAE"]; let data = { "response": [{ "countryId": { "id": "10050020025", "idScheme": "externalId" }, "processedDateTime": "2019-11-07 05:39:09", "AAE": [{ "amount": "1000", "currencyCode": "USD" }], "TAE": [{ "amount": "0", "currencyCode": "USD" }] }, { "countryId": { "id": "10291520071", "idScheme": "InternalId" }, "processedDateTime": "2019-02-03 08:21:22", "AAE": [{ "amount": "0", "currencyCode": "USD" }], "TAE": [{ "amount": "-2001", "currencyCode": "USD" }] } ] }; let result = data.response.map(val => { keys.forEach(key => { if (val[key] && val[key].some(x => +x.amount <= 0)) { delete val[key]; } }); return val; }); console.log(result);