最初,我有一个对象:
let root = {};
root["myRootNode"] = {
id1: {
age: "17",
name: "name1",
surname: "surname1"
},
id2: {
age: "11",
name: "name2",
surname: "surname2"
},
id3: {
age: "25",
name: "name1",
surname: "surname3"
}
};
我想要做的是,让它进入状态:
"name1": [
{
age: "17",
surname: "surname1"
},
{
age: "25",
surname: "surname3"
}
],
"name2": [
age: "11",
surname: "surname2"
]
对我来说,重要的是拥有所有对象的列表/数组,其中包含相同的属性,并按该属性的值进行分组。
我尝试的(使用lodash)是:
let test = _.mapKeys(root["myRootNode"], function(value, key) {
return value["name"];
});
但这给了我一个结果:
"name1": {
age: "25"
name: "name1"
surname: "surname3"
},
"name2": {
age: "11"
name: "name2"
surname: "surname2"
}
所以它们没有被分组,只有最后一个值被映射到正在重复的键下。另外,在我得到的结果中,它们没有被放在一个数组下。
发布于 2018-08-10 08:47:41
可以使用groupBy并映射它的值来摆脱name
属性。
如果您不介意离开name
属性,可以简单地执行_.groupBy(root.myRootNode, 'name');
就我个人而言,我觉得应该使用数组而不是对象
const res =
_(root.myRootNode)
.groupBy('name')
.mapValues((arr)=>_.map(arr, (o) =>_.omit(o,['name'])))
.value()
console.log(res)
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.min.js"></script>
<script>
let root = {};
root["myRootNode"] = {
id1: {
age: "17",
name: "name1",
surname: "surname1"
},
id2: {
age: "11",
name: "name2",
surname: "surname2"
},
id3: {
age: "25",
name: "name1",
surname: "surname3"
}
};
</script>
发布于 2018-08-10 07:45:05
这是一次尝试。其思想是为每个新名称创建一个数组,并将所有条目推送到相应的名称数组中。
const root = {
myRootNode: {
id1: {
age: "17",
name: "name1",
surname: "surname1"
},
id2: {
age: "11",
name: "name2",
surname: "surname2"
},
id3: {
age: "25",
name: "name1",
surname: "surname3"
}
}
};
const result = Object.values(root.myRootNode).reduce((a, e) => {
if (!(e.name in a)) {
a[e.name] = [];
}
a[e.name].push({
age: e.age,
surname: e.surname
});
return a;
}, {});
console.log(JSON.stringify(result, null, 4));
https://stackoverflow.com/questions/51777043
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