2个属性上的GROUP-BY数组和REDUTE [英] Group-by array on 2 properties with reduce
本文介绍了2个属性上的GROUP-BY数组和REDUTE的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想按2个属性对对象数组进行分组。我如何才能做到这一点？
我得到了这个数组：
[
{
"nome": "Beatrice Mattos",
"apelido": "Beatrice",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T15:00:00",
"Servico": "Corte Masculino"
},
{
"nome": "Davi",
"apelido": "Davi",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T14:00:00",
"Servico": "Corte Masculino"
},
{
"nome": "Kai",
"apelido": "Martins",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T13:30:00",
"Servico": "Barba Completa"
},
{
"nome": "Beatrice Mattos",
"apelido": "Beatrice",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T09:30:00",
"Servico": "Corte Masculino"
},
{
"nome": "Beatrice Mattos",
"apelido": "Beatrice",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T09:00:00",
"Servico": "Alongamento de Cabelo"
},
{
"nome": "Beatrice Mattos",
"apelido": "Beatrice",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T08:00:00",
"Servico": "Corte Masculino"
},
{
"nome": "Estevan Alves",
"apelido": "Estevan",
"dt_extrato": "2020-05-25T00:00:00",
"dt_inicio": "2020-05-25T08:40:00",
"Servico": "Corte Masculino"
},
{
"nome": "Kai",
"apelido": "Martins",
"dt_extrato": "2020-05-25T00:00:00",
"dt_inicio": "2020-05-25T08:30:00",
"Servico": "Corte Masculino"
},
{
"nome": "Estevan Alves",
"apelido": "Estevan",
"dt_extrato": "2020-05-25T00:00:00",
"dt_inicio": "2020-05-25T08:00:00",
"Servico": "Corte Masculino"
}
]
我想把它转换成这个对象：
{
"2020-05-26T00:00:00": [{
"Beatrice Mattos": [
{
"nome": "Beatrice Mattos",
"apelido": "Beatrice",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T15:00:00",
"Servico": "Corte Masculino"
},
{
"nome": "Beatrice Mattos",
"apelido": "Beatrice",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T09:30:00",
"Servico": "Corte Masculino"
},
{
"nome": "Beatrice Mattos",
"apelido": "Beatrice",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T09:00:00",
"Servico": "Alongamento de Cabelo"
},
{
"nome": "Beatrice Mattos",
"apelido": "Beatrice",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T08:00:00",
"Servico": "Corte Masculino"
}
],
"Davi": [
{
"nome": "Davi",
"apelido": "Davi",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T14:00:00",
"Servico": "Corte Masculino"
}
],
"Kai": [
{
"nome": "Kai",
"apelido": "Martins",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T13:30:00",
"Servico": "Barba Completa"
}
]
}],
"2020-05-25T00:00:00": [{
"Kai": [
{
"nome": "Kai",
"apelido": "Martins",
"dt_extrato": "2020-05-26T00:00:00",
"dt_inicio": "2020-05-26T13:30:00",
"Servico": "Barba Completa"
},
{
"nome": "Kai",
"apelido": "Martins",
"dt_extrato": "2020-05-25T00:00:00",
"dt_inicio": "2020-05-25T08:30:00",
"Servico": "Corte Masculino"
}
],
"Estevan Alves": [
{
"nome": "Estevan Alves",
"apelido": "Estevan",
"dt_extrato": "2020-05-25T00:00:00",
"dt_inicio": "2020-05-25T08:40:00",
"Servico": "Corte Masculino"
},
{
"nome": "Estevan Alves",
"apelido": "Estevan",
"dt_extrato": "2020-05-25T00:00:00",
"dt_inicio": "2020-05-25T08:00:00",
"Servico": "Corte Masculino"
}
]
}]
}
我的目标是按日期和名称对服务进行分组。我只能一个接一个地分组，而不是两个都能。
要按字段‘name’分组，我使用以下代码：
this.name_group = this.array.reduce((data, object) => {
data[object.nome] = [...data[object.nome] || [], object];
return data;
}, {});
要按字段‘dt_Extra’分组，我使用了以下代码：
this.date_group = this.array.reduce((data, object) => {
data[object.dt_extrato] = [...data[object.dt_extrato] || [], object];
return data;
}, {});
但我不能同时对嵌套的两个进行分组。是否可以仅使用REDUTE？
谢谢
推荐答案
如果您希望获得中间没有数组的嵌套对象，则可以使用嵌套键数组来采用此方法。
数据-lang="js"数据-隐藏="假"数据-控制台="真"数据-巴贝尔="假">var data = [{ nome: "Beatrice Mattos", apelido: "Beatrice", dt_extrato: "2020-05-26T00:00:00", dt_inicio: "2020-05-26T15:00:00", Servico: "Corte Masculino" }, { nome: "Davi", apelido: "Davi", dt_extrato: "2020-05-26T00:00:00", dt_inicio: "2020-05-26T14:00:00", Servico: "Corte Masculino" }, { nome: "Kai", apelido: "Martins", dt_extrato: "2020-05-26T00:00:00", dt_inicio: "2020-05-26T13:30:00", Servico: "Barba Completa" }, { nome: "Beatrice Mattos", apelido: "Beatrice", dt_extrato: "2020-05-26T00:00:00", dt_inicio: "2020-05-26T09:30:00", Servico: "Corte Masculino" }, { nome: "Beatrice Mattos", apelido: "Beatrice", dt_extrato: "2020-05-26T00:00:00", dt_inicio: "2020-05-26T09:00:00", Servico: "Alongamento de Cabelo" }, { nome: "Beatrice Mattos", apelido: "Beatrice", dt_extrato: "2020-05-26T00:00:00", dt_inicio: "2020-05-26T08:00:00", Servico: "Corte Masculino" }, { nome: "Estevan Alves", apelido: "Estevan", dt_extrato: "2020-05-25T00:00:00", dt_inicio: "2020-05-25T08:40:00", Servico: "Corte Masculino" }, { nome: "Kai", apelido: "Martins", dt_extrato: "2020-05-25T00:00:00", dt_inicio: "2020-05-25T08:30:00", Servico: "Corte Masculino" }, { nome: "Estevan Alves", apelido: "Estevan", dt_extrato: "2020-05-25T00:00:00", dt_inicio: "2020-05-25T08:00:00", Servico: "Corte Masculino" }],
keys = ['dt_extrato', 'nome'],
result = data.reduce((r, object) => {
keys
.reduce((group, key, index, { length }) =>
group[object[key]] = group[object[key]] || (index + 1 === length
? []
: {}
), r)
.push(object);
return r;
}, {});
console.log(result);.as-console-wrapper { max-height: 100% !important; top: 0; }这篇关于2个属性上的GROUP-BY数组和REDUTE的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
