how to extract list of ids from changing array field in java script?

Question

I am writing tests in postman and I would like to extract the list of Ids inside variants object matching condition where stock.available ==true and quantity > 3. However my issues lies that number inside variants object is random value which is 194922428018, 194922428025 and 194922428032. Final output should results only 194922428025 and 194922428032 which are the items with stock. Thanks in Advance.

[{
    "appIdentifier": "53443434w-813f-4b59-b58a-deaf76847845",
    "categoryIds": null,
    "id": "205148",
    "variants": {
        "194922428018": {
            "id": "194922428018",
            "filterAttributes": null,
            "meta": {
                    "ean": "609332822610"
                },
            "stock": {
                "available": false,
                "lowOnStock": true,
                "leadTime": null,
                "quantity": 0
            },
            "categoryIds": null
        },
        "194922428025": {
            "id": "194922428025",
            "filterAttributes": null,
            "stock": {
                "available": true,
                "lowOnStock": true,
                "leadTime": null,
                "quantity": 9
            },
            "categoryIds": null
        },
        "194922428032": {
            "id": "194922428032",
            "filterAttributes": null,
            "stock": {
                "available": true,
                "lowOnStock": false,
                "leadTime": null,
                "quantity": 33
            },
            "categoryIds": null
        }
}]

Does this answer your question? [Find object by id in an array of JavaScript objects](https://stackoverflow.com/questions/7364150/find-object-by-id-in-an-array-of-javascript-objects) — 0stone0, Feb 21 '22 at 10:42
iterate thought your "variant" object and check forEach object inside, if object.stock.available === true && object.stock.quantity > 3 — Chiquito_Sensei, Feb 21 '22 at 10:45
You can use [`Object.entries`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries) or a simple [`for .. in`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...in) loop — derpirscher, Feb 21 '22 at 10:49
@0stone0 but as `variants` is an object and not an array that doesn't seem to work here ... — derpirscher, Feb 21 '22 at 10:50

score 2 · Accepted Answer · answered Feb 21 '22 at 10:49

Hope this would work for you

const testArray = [{
    "appIdentifier": "53443434w-813f-4b59-b58a-deaf76847845",
    "categoryIds": null,
    "id": "205148",
    "variants": {
        "194922428018": {
            "id": "194922428018",
            "filterAttributes": null,
            "stock": {
                "available": false,
                "lowOnStock": true,
                "leadTime": null,
                "quantity": 0
            },
            "categoryIds": null
        },
        "194922428025": {
            "id": "194922428025",
            "filterAttributes": null,
            "stock": {
                "available": true,
                "lowOnStock": true,
                "leadTime": null,
                "quantity": 9
            },
            "categoryIds": null
        },
        "194922428032": {
            "id": "194922428032",
            "filterAttributes": null,
            "stock": {
                "available": true,
                "lowOnStock": false,
                "leadTime": null,
                "quantity": 33
            },
            "categoryIds": null
        }
}}
]

const ids = Object.entries(testArray[0]['variants']).reduce((acc, [key, value])=>{
    if(value.stock.available && value.stock.quantity > 3) acc.push(key)
  return acc
}, [])

console.log(ids) // ["194922428025", "194922428032"]

Above works perfectly for above use case but what needs to be done if I want to get `meta.ean` value as well? I have updated the original JSON to add meta object — sjgmamer, Mar 15 '22 at 16:09
you can read like this ,`variants['194922428032']['meta']['ean']` what is the required output? — Dev-2019, Mar 15 '22 at 16:45
the required output is to extract ean value --> `609332822610` — sjgmamer, Mar 15 '22 at 17:16
I don't think I can use `variants['194922428032']['meta']['ean']` because `194922428032` this is dynamic and varies on each request. @nithin-pb — sjgmamer, Mar 15 '22 at 17:33
not sure this is the required solution `const eans = ids.reduce((acc, curr)=>{ const item = testArray[0].variants[curr] if(item?.meta?.ean) acc.push(item.meta.ean) return acc }, [])` this is an extension to the original answer — Dev-2019, Mar 16 '22 at 12:17

how to extract list of ids from changing array field in java script?

1 Answers1