在对象数组中合并重复的多维对象 [英] Merge duplicate multidimensional objects in array of objects

问题描述

我正在寻找一种基于id值在数组中组合对象的方法.我可以在顶层使用过滤器方法使其工作，但不确定如何确保所有子组等正确合并.这是一个示例:

I am looking to find a way to combine objects in arrays based on id values. I can make it work using the filter method for the top level, but not sure how to make sure that all subGroups and such are merged properly. Here is an example:

[
    {
        id: 1,
        name: "A"
        subGroup: [
            {
                id: 1,
                name: "AA"
            }
        ]
    },
    {
        id: 2,
        name: "B"
        subGroup: [
            {
                id: 4,
                name: "DD"
            }
        ]
    },
    {
        id: 1,
        name: "A"
        subGroup: [
            {
                id: 2,
                name: "BB"
            }
        ]
    },
    {
        id: 3,
        name: "C"
        subGroup: [
            {
                id: 5,
                name: "EE"
            }
        ]
    },
    {
        id: 2,
        name: "B"
        subGroup: [
            {
                id: 4,
                other: "Something else"
            }
        ]
    },
    {
        id: 1,
        name: "A"
        subGroup2: [
            {
                id: 7,
                name: "GG"
            }
        ]
    },
    {
        id: 1,
        name: "A"
        subGroup: [
            {
                id: 1,
                name: "AA",
                subSubGroup: [
                    id: 10,
                    name: "II",
                ]
            }
        ]
    }
]

我正在寻找类似的东西并将其合并:

I am looking to take something like that and merge it like:

[
    {
        id: 1,
        name: "A"
        subGroup: [
            {
                id: 1,
                name: "AA",
                subSubGroup: [
                    id: 10,
                    name: "II",
                ]
            },
            {
                id: 2,
                name: "BB"
            }
        ],
        subGroup2: [
            {
                id: 7,
                name: "GG"
            }
        ]
    },
    {
        id: 2,
        name: "B"
        subGroup: [
            {
                id: 4,
                name: "DD",
                other: "Something else"
            }
        ]
    },
    {
        id: 3,
        name: "C"
        subGroup: [
            {
                id: 5,
                name: "EE"
            }
        ]
    }
]

任何帮助将不胜感激.

推荐答案

对于数组和id和name属性上的组，可以使用递归方法.

You could use a recursive approach for properties which are arrays and group on id and name property.

var data = [{ id: 1, name: "A", subGroup: [{ id: 1, name: "AA" }] }, { id: 2, name: "B", subGroup: [{ id: 4, name: "DD" }] }, { id: 1, name: "A", subGroup: [{ id: 2, name: "BB" }] }, { id: 3, name: "C", subGroup: [{ id: 5, name: "EE" }] }, { id: 2, name: "B", subGroup: [{ id: 4, other: "Something else" }] }, { id: 1, name: "A", subGroup2: [{ id: 7, name: "GG" }] }, { id: 1, name: "A", subGroup: [{ id: 1, name: "AA", subSubGroup: [{ id: 10, name: "II" }] }] }],
    result = [];

data.forEach(function iter(r) {
    return function (o) {
        var ref = r.find(p => o.id === p.id && o.name === p.name);
        if (!ref) {
            r.push(o);
            return;
        }
        Object
            .keys(o)
            .filter(k => Array.isArray(o[k]))
            .forEach(k => o[k].forEach(iter(ref[k] = ref[k] || [])));
    };
}(result));

console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

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