根据属性值lodash将对象数组中的属性合并到另一个对象中 [英] Merge property from an array of objects into another based on property value lodash

问题描述

我有 2 个对象数组，它们每个都有一个共同的 id.我需要将数组 2 的对象的属性添加到对象数组 1，如果它们具有匹配的 ids.

数组 1:

<预><代码>[{编号:1，姓名:汤姆，年龄:24},{编号:2，姓名:蒂姆，年龄:25},{编号:3，姓名:杰克，年龄:24},]

数组 2:

<预><代码>[{编号:1，性别:男，眼睛颜色:蓝色，重量:150},{编号:2，性别:男，眼睛颜色:绿色，重量:175},{编号:3，性别:男，眼睛颜色:淡褐色，重量:200},]

预期结果:

<预><代码>[{编号:1，姓名:汤姆，年龄:24，眼睛颜色:蓝色，},{编号:2，姓名:蒂姆，年龄:25，眼睛颜色:绿色，},{编号:3，姓名:杰克，年龄:24，眼睛颜色:淡褐色，},]

我尝试使用 lodash _.merge 函数，但是当我只想添加 eyeColour 时，我最终将所有属性合并到一个数组中.

解决方案

刚刚注意到 Paul 在我处理我的答案时回答了但我还是会添加我的非常相似的代码:

var getEyeColour = function (el) { return _.pick(el, 'eyeColour');}var out = _.merge(arr1, _.map(arr2, getEyeColour));

演示

I have 2 arrays of objects, they each have an id in common. I need a property from objects of array 2 added to objects array 1, if they have matching ids.

Array 1:

[
    {
        id: 1,
        name: tom,
        age: 24
    },
    {
        id: 2,
        name: tim,
        age: 25
    },
    {
        id: 3,
        name: jack,
        age: 24
    },

]

Array 2:

[
    {
        id: 1,
        gender: male,
        eyeColour: blue,
        weight: 150
    },
    {
        id: 2,
        gender: male,
        eyeColour: green,
        weight: 175
    },
    {
        id: 3,
        gender: male,
        eyeColour: hazel,
        weight: 200
    },

]

Desired Outcome:

[
    {
        id: 1,
        name: tom,
        age: 24,
        eyeColour: blue,
    },
    {
        id: 2,
        name: tim,
        age: 25,
        eyeColour: green,
    },
    {
        id: 3,
        name: jack,
        age: 24,
        eyeColour: hazel,
    },

]

I tried using lodash _.merge function but then I end up with all properties into one array, when I only want eyeColour added.

解决方案

Just noticed Paul answered while I was working on my answer but I'll add my very similar code anyway:

var getEyeColour = function (el) { return _.pick(el, 'eyeColour'); }
var out = _.merge(arr1, _.map(arr2, getEyeColour));

DEMO

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