我有很多物体
{
"work": [{
"_id": "5c80c5c00c253823fc443337",
"start": "2019-01-01T18:30:00.000Z",
"end": "2019-01-02T18:30:00.000Z",
"employee": {
"_id": "5c80c16e0c253823fc44332a",
"status": "active",
"location": "Chennai",
"contact_number": "1234567890"
},
"allocation": 30
},
{
"_id": "5c80c5ef0c253823fc443339",
"start": "2018-12-31T18:30:00.000Z",
"end": "2019-09-30T18:30:00.000Z",
"employee": {
"_id": "5c80c16e0c253823fc44332a",
"status": "active",
"location": "Chennai",
"contact_number": "1234567890"
},
"allocation": 100
},
{
"_id": "5c80c60b0c253823fc44333a",
"start": "2018-12-31T18:30:00.000Z",
"end": "2020-10-07T18:30:00.000Z",
"employee": {
"_id": "5c80c16e0c253823fc44332a",
"status": "active",
"location": "Chennai",
"contact_number": "1234567890"
},
"allocation": 25
},
{
"_id": "5c80c65e0c253823fc44333b",
"start": "2019-01-01T18:30:00.000Z",
"end": "2019-10-04T18:30:00.000Z",
"employee": {
"_id": "5c80c1940c253823fc44332b",
"status": "active",
"location": "Chennai",
"contact_number": "1234567890"
},
"allocation": 50
},
{
"_id": "5c80c7240c253823fc44333f",
"start": "2018-12-31T18:30:00.000Z",
"end": "2019-10-09T18:30:00.000Z",
"employee": {
"_id": "5c80c26e0c253823fc44332e",
"status": "active",
"location": "Chennai",
"contact_number": "1234567890"
},
"allocation": 25
}
]
}
我需要将它们转换为
[{
"_id": "5c80c16e0c253823fc44332a",
"status": "active",
"location": "Chennai",
"contact_number": "1234567890",
"work": [{
"_id": "5c80c5c00c253823fc443337",
"start": "2019-01-01T18:30:00.000Z",
"end": "2019-01-02T18:30:00.000Z",
"allocation": 30
}, {
"_id": "5c80c5ef0c253823fc443339",
"start": "2018-12-31T18:30:00.000Z",
"end": "2019-09-30T18:30:00.000Z",
"allocation": 100
}, {
"_id": "5c80c60b0c253823fc44333a",
"start": "2018-12-31T18:30:00.000Z",
"end": "2020-10-07T18:30:00.000Z",
"allocation": 25
}]
}, {
"_id": "5c80c1940c253823fc44332b",
"status": "active",
"location": "Chennai",
"contact_number": "1234567890",
"work": [{
"_id": "5c80c65e0c253823fc44333b",
"start": "2019-01-01T18:30:00.000Z",
"end": "2019-10-04T18:30:00.000Z",
"allocation": 50
}]
}, {
"_id": "5c80c26e0c253823fc44332e",
"status": "active",
"location": "Chennai",
"contact_number": "1234567890",
"work": [{
"_id": "5c80c7240c253823fc44333f",
"start": "2018-12-31T18:30:00.000Z",
"end": "2019-10-09T18:30:00.000Z",
"allocation": 25
}]
}]
我已经通过部分使用lodash和vanilla js做到了，它完全可以正常工作。但是明智的做法是完全不好的。我想仅使用lodash来实现此目的。有什么帮助吗？
let ids: any = groupBy(this.project.work, function (res) {
return res.employee._id;
});
for (let id in ids) {
let tmp = [];
let employee_added = false;
ids[id].map((work) => {
if (!employee_added) {
tmp = work.employee;
tmp['work'] = [];
employee_added = true;
}
delete work.employee;
tmp['work'].push(work);
})
this.employees.push(tmp);
}
console.log(this.employees);
你能做到简洁使用纯JavaScript和Object.values()，Array.reduce()和desctructuring分配：
const data = {"work":[{"_id":"5c80c5c00c253823fc443337","start":"2019-01-01T18:30:00.000Z","end":"2019-01-02T18:30:00.000Z","employee":{"_id":"5c80c16e0c253823fc44332a","status":"active","location":"Chennai","contact_number":"1234567890"},"allocation":30},{"_id":"5c80c5ef0c253823fc443339","start":"2018-12-31T18:30:00.000Z","end":"2019-09-30T18:30:00.000Z","employee":{"_id":"5c80c16e0c253823fc44332a","status":"active","location":"Chennai","contact_number":"1234567890"},"allocation":100},{"_id":"5c80c60b0c253823fc44333a","start":"2018-12-31T18:30:00.000Z","end":"2020-10-07T18:30:00.000Z","employee":{"_id":"5c80c16e0c253823fc44332a","status":"active","location":"Chennai","contact_number":"1234567890"},"allocation":25},{"_id":"5c80c65e0c253823fc44333b","start":"2019-01-01T18:30:00.000Z","end":"2019-10-04T18:30:00.000Z","employee":{"_id":"5c80c1940c253823fc44332b","status":"active","location":"Chennai","contact_number":"1234567890"},"allocation":50},{"_id":"5c80c7240c253823fc44333f","start":"2018-12-31T18:30:00.000Z","end":"2019-10-09T18:30:00.000Z","employee":{"_id":"5c80c26e0c253823fc44332e","status":"active","location":"Chennai","contact_number":"1234567890"},"allocation":25}]};
const result = Object.values(data.work.reduce((acc, work) => {
const { employee: { _id, ...rest }, ...job } = work;
const jobs = (acc[_id] || {}).work || [];
acc[_id] = { _id, ...rest, work: [...jobs, job] };
return acc;
}, {}));
console.log(result);本文收集自互联网，转载请注明来源。
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我来说两句