我有一个如下所示的平面 JSON 文件:
{"dataSet": {"dataTable": [{
"id": "List1",
"row": [
{
"pagenumber": "7",
"pageversion": "HE; K12",
"category": "3D Print - K12;HE",
"pagetype": "Product",
"PtrChild": "MakerBot - 10771",
"Allocation": "0.500",
"catext": "Text goes here"
},
{
"pagenumber": "7",
"pageversion": "SL",
"category": "3D Print - SL",
"pagetype": "Product",
"PtrChild": "AUTODESK - 10032",
"Allocation": "0.500",
"catext": "Text goes here"
},
{
"pagenumber": "10",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Brand",
"PtrChild": null,
"Allocation": "1.000",
"catext": "Text goes here"
},
{
"pagenumber": "11",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Product",
"PtrChild": "EPSON INK JET** - 10082",
"Allocation": "0.200",
"catext": "Text goes here"
},
{
"pagenumber": "11",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Product",
"PtrChild": "EPSON INK JET** - 10082",
"Allocation": "0.200",
"catext": "Text goes here"
},
{
"pagenumber": "11",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Product",
"PtrChild": "EPSON INK JET** - 10082",
"Allocation": "0.500",
"catext": "Text goes here"
},
{
"pagenumber": "11",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Product",
"PtrChild": "LEXMARK** - 10151",
"Allocation": "0.200",
"catext": "Text goes here"
}
]
}]}}
我需要按页码、页面版本、PtrChild、分配对数据进行分组，完成后如下所示:
{"pages": [
{
"pagenumber": "7",
"versions": [
{
"pageversion": "HE; K12",
"category": "3D Print - K12;HE",
"pagetype": "Product",
"partners": [{
"PtrChild": "MakerBot - 10771",
"allocations": [{
"Allocation": "0.500",
"ads": [{"catext": "Text goes here"}]
}]
}]
},
{
"pageversion": "SL",
"category": "3D Print - SL",
"pagetype": "Product",
"partners": [{
"PtrChild": "AUTODESK - 10032",
"allocations": [{
"Allocation": "0.500",
"ads": [{"catext": "Text goes here"}]
}]
}]
}
]
},
{
"pagenumber": "10",
"versions": [{
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Brand",
"partners": [{
"PtrChild": null,
"allocations": [{
"Allocation": "1.500",
"ads": [{"catext": "Text goes here"}]
}]
}]
}]
},
{
"pagenumber": "11",
"versions": [{
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Product",
"partners": [
{
"PtrChild": "EPSON INK JET** - 10082",
"allocations": [
{
"Allocation": "0.250",
"ads": [
{"catext": "Text goes here"},
{"catext": "Text goes here"}
]
},
{
"Allocation": "0.500",
"ads": [{"catext": "Text goes here"}]
}
]
},
{
"PtrChild": "LEXMARK** - 10151",
"allocations": [{
"Allocation": "0.200",
"ads": [{"catext": "Text goes here"}]
}]
}
]
}]
}
]}
运行这个:
var myGroupedData = nest(myCatalog, ["pagenumber", "pageversion", "PtrChild", "Allocation"]);
// Reorganize JSON data
function nest(collection, keys) {
if (!keys.length) {
return collection;
}
else {
return _(collection).groupBy(keys[0]).mapValues(function(values) {
return nest(values, keys.slice(1));
}).value();
}
}
...获得正确的分组，但消除了每个组的键:
{
"7": {
"HE; K12": {"MakerBot - 10771": {"0.500": [{
"pagenumber": "7",
"pageversion": "HE; K12",
"category": "3D Print - K12;HE",
"pagetype": "Product",
"PtrChild": "MakerBot - 10771",
"Allocation": "0.500",
"catext": "Text goes here"
}]}},
"SL": {"AUTODESK - 10032": {"0.500": [{
"pagenumber": "7",
"pageversion": "SL",
"category": "3D Print - SL",
"pagetype": "Product",
"PtrChild": "AUTODESK - 10032",
"Allocation": "0.500",
"catext": "Text goes here"
}]}}
},
"10": {"Apply to All": {"null": {"1.000": [{
"pagenumber": "10",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Brand",
"PtrChild": null,
"Allocation": "1.000",
"catext": "Text goes here"
}]}}},
"11": {"Apply to All": {
"EPSON INK JET** - 10082": {
"0.200": [
{
"pagenumber": "11",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Product",
"PtrChild": "EPSON INK JET** - 10082",
"Allocation": "0.200",
"catext": "Text goes here"
},
{
"pagenumber": "11",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Product",
"PtrChild": "EPSON INK JET** - 10082",
"Allocation": "0.200",
"catext": "Text goes here"
}
],
"0.500": [{
"pagenumber": "11",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Product",
"PtrChild": "EPSON INK JET** - 10082",
"Allocation": "0.500",
"catext": "Text goes here"
}]
},
"LEXMARK** - 10151": {"0.200": [{
"pagenumber": "11",
"pageversion": "Apply to All",
"category": "Secure Printers",
"pagetype": "Product",
"PtrChild": "LEXMARK** - 10151",
"Allocation": "0.200",
"catext": "Text goes here"
}]}
}}
}
如何保留多个键上的键和组？
我被迫使用 ExtendScript，因此无法使用 3.10.1 版本以上的 Lodash。
最佳答案
您可以为每个级别的所需属性使用一个辅助数组，为不同的命名子数组使用最后一个项目，并使用一个方法来提取对象的已使用属性，以获得最终推送的清理对象。
var data = { dataSet: { dataTable: [{ id: "List1", row: [{ pagenumber: "7", pageversion: "HE; K12", category: "3D Print - K12;HE", pagetype: "Product", PtrChild: "MakerBot - 10771", Allocation: "0.500", catext: "Text goes here" }, { pagenumber: "7", pageversion: "SL", category: "3D Print - SL", pagetype: "Product", PtrChild: "AUTODESK - 10032", Allocation: "0.500", catext: "Text goes here" }, { pagenumber: "10", pageversion: "Apply to All", category: "Secure Printers", pagetype: "Brand", PtrChild: null, Allocation: "1.000", catext: "Text goes here" }, { pagenumber: "11", pageversion: "Apply to All", category: "Secure Printers", pagetype: "Product", PtrChild: "EPSON INK JET** - 10082", Allocation: "0.200", catext: "Text goes here" }, { pagenumber: "11", pageversion: "Apply to All", category: "Secure Printers", pagetype: "Product", PtrChild: "EPSON INK JET** - 10082", Allocation: "0.200", catext: "Text goes here" }, { pagenumber: "11", pageversion: "Apply to All", category: "Secure Printers", pagetype: "Product", PtrChild: "EPSON INK JET** - 10082", Allocation: "0.500", catext: "Text goes here" }, { pagenumber: "11", pageversion: "Apply to All", category: "Secure Printers", pagetype: "Product", PtrChild: "LEXMARK** - 10151", Allocation: "0.200", catext: "Text goes here" }] }] } },
props = [["pagenumber", "versions"], ["pageversion", "category", "pagetype", "partners"], ["PtrChild", "allocations"], ["Allocation", "ads"]],
result = data.dataSet.dataTable.reduce((r, { row }) => {
row.forEach(o => props.reduce((a, [...keys]) => {
var children = keys.pop(),
temp = a.find(p => p[keys[0]] === o[keys[0]]);
if (!temp) a.push(temp = Object.assign(...keys.map(k => ({ [k]: o[k] })), { [children]: [] }));
o = keys.reduce((p, k) => ({ [k]: k, ...p } = p, p), o);
return temp[children];
}, r).push(o));
return r;
}, []);
console.log(result);.as-console-wrapper { max-height: 100% !important; top: 0; }关于javascript - 将 JSON 数据分组到多个键上并保留键，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55873913/