How to get matching elements from array and change array object?

Question

if array has matching ids change object to one object without effecting original array with below code it returns only matching objects but i want expected result as mentioned

main.ts

const arr = [{
            "body": {
                "specialtyID": "7114798",
                "sourceSystem": "HBS",
                "rxInfos": [{
                    "drugNdc": "00445450085",
                    "rxNumber": "14678904"
                }]

            },
            {
                "body": {
                    "specialtyID": "7114798",
                    "sourceSystem": "HBS",
                    "rxInfos": [{
                        "drugNdc": "00004080085",
                        "rxNumber": "1459004"
                    }]
                }
            },
            {
                "body": {
                    "specialtyID": "7908398",
                    "sourceSystem": "HBS",
                    "rxInfos": [{
                        "drugNdc": "06789955085",
                        "rxNumber": "1478604"
                    }]
                }
            }

        ]


        const tempArray = arr;

        function arrayMatch(temp, arr) {
            const finalArray = [];
            arr.forEach((element) => {
                    tempArray.forEach((temp) => {
                            if (temp.speicaltyID === element.specialtyID) {
                                temp.rxInfos.forEach((rxInfo) => {
                                    element.rxInfos.push(rxInfo);
                                });
                            }
                        }
                        finalArray = arr;

                    });
                return finalArray

            }

expected output

 const arr = [{
                        "body": {
                            "specialtyID": "7114798",
                            "sourceSystem": "HBS",
                            "rxInfos": [{
                                    "drugNdc": "00445450085",
                                    "rxNumber": "14678904"
                                },
                                {
                                    "drugNdc": "00004080085",
                                    "rxNumber": "1459004"
                                }
                            ]
                        },
                        {
                            "body": {
                                "specialtyID": "7908398",
                                "sourceSystem": "HBS",
                                "rxInfos": [{
                                    "drugNdc": "06789955085",
                                    "rxNumber": "1478604"
                                }]
                            }
                        }

                    ]

What have you tried so far?

Zze
– Zze

2018-12-06 21:40:43 +00:00
Commented Dec 6, 2018 at 21:40 — Zze
– Zze, Commented Dec 6, 2018 at 21:40
@Zze function is returning array only for matching objects

hussain
– hussain

2018-12-06 22:05:00 +00:00
Commented Dec 6, 2018 at 22:05 — hussain
– hussain, Commented Dec 6, 2018 at 22:05

KShewengger · Accepted Answer · 2018-12-07 02:19:51Z

2

You can try this method to achieve your desired result:

const result = arr.reduce((container, value) => {
    const compare     = ({ body }) => body.specialtyID === value.body.specialtyID;
    const isExists    = container.some(compare);
    const pushRxInfos = container.map(item => compare(item) ? item.body.rxInfos.push(...value.body.rxInfos) : item);

    isExists ? pushRxInfos : container.push(value);

    return container;
}, []);

edited Dec 7, 2018 at 2:19

answered Dec 6, 2018 at 23:54

KShewengger

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3 Comments

hussain Over a year ago

yes that is the solution i was looking only issue is matching element is being created under another nested array , How it can be pushed to same level where rxInfos elements are in object

hussain Over a year ago

it is coming like [{ element1 }, [{ matched element }] ] matched element should not wrap in array

KShewengger Over a year ago

@hussain had updated my answer. Just need to use the spread operator to get the raw data from the array - .push(...value.body.rxInfos) and it will now be [{ element1 }, { matched element } ]

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