Remove array from array if there is certain value in Object

Question

I want to remove array which is inside of whole array if an object of its array has certain value. I searched the web and I saw removing object or array if it has certain value and I can't find that solves my problem.

I have objects of array which is again wrapped by array. It looks like below:

"products": [
    [
        {
            "product.name": "A",
            "remark.name": "Good"
        },
        {
            "product.name": "B",
            "remark.name": "Good"
        }
    ],
    [
        {
            "product.name": "A",
            "remark.name": "Bad"
        },
        {
            "product.name": "B",
            "remark.name": "Good"
        }
    ]
]

What I want

I want to omit the whole array which contains at least remark.name === Bad So, I should get the final result like below.

"products": [
    [
        {
            "product.name": "A",
            "remark.name": "Good"
        },
        {
            "product.name": "B",
            "remark.name": "Good"
        }
    ]
]

What I've tried

Below code

let result = [];
products.map((product) => {
    var res = _.remove(product, function (n) {
        return n["remark.name"] === "Fail";
    });

    result.push(res);
});

produces following result:

"products": [
    [
        {
            "product.name": "A",
            "remark.name": "Good"
        },
        {
            "product.name": "B",
            "remark.name": "Good"
        }
    ],
    [
        {
            "product.name": "B",
            "remark.name": "Good"
        }
    ]
]

Sascha A. · Accepted Answer · 2020-08-16 20:07:41Z

2

Use Array#filter for filtering and as filter Array#every where remark.name is different from 'Bad'.

Note: Use single or double quotes for propertyname 'remark.name' because of the dot in it`s name.

let products = [
    [
        {
            "product.name": "A",
            "remark.name": "Good"
        },
        {
            "product.name": "B",
            "remark.name": "Good"
        }
    ],
    [
        {
            "product.name": "A",
            "remark.name": "Bad"
        },
        {
            "product.name": "B",
            "remark.name": "Good"
        }
    ]
];

let filtered = products.filter(arr => arr.every(obj => obj['remark.name'] !== 'Bad'));
console.log(filtered);

edited Aug 16, 2020 at 20:07

answered Aug 16, 2020 at 19:55

Sascha A.

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5 Comments

khukho Over a year ago

Thanks. Perfectly works. Could you please explain why should single quote be used because of dot in property name?

Patrick Roberts Over a year ago

@HtetPhyoNaing obj.remark.name implies obj = { remark: { name: 'Bad' } } while obj['remark.name'] implies obj = { 'remark.name': 'Bad' }

Sascha A. Over a year ago

You are right doublequotes works too. The only way what not functions is object.remark.name because this would be the property remark and there the property name.

Sascha A. Over a year ago

So if not absolutely necessary avoid propertienames with a dot inside, it could result in missunderstoodness and faults.

khukho Over a year ago

Thank you all so very much. Understood.

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