I have an array of object which must be filtered based on another array, the keys are listed in the allowed array, pls help tired using object.entries and reduce but didn't work
const filter = _.filter;
const data = [{
id: 1,
row: [{
id: 'a',
name: 'ab',
code: 'sdf',
version: 1
},
{
id: 'b',
name: 'bc',
code: 'def',
version: 3
},
{
id: 'c',
name: 'cd',
code: 'afd',
version: 2
},
]
},
{
id: 2,
row: [{
id: 'd',
name: 'ef',
code: 'sdf',
version: 1
},
{
id: 'e',
name: 'gh',
code: 'def',
version: 3
},
{
id: 'f',
name: 'ij',
code: 'afd',
version: 2
},
]
},
{
id: 3,
row: [{
id: 'g',
name: 'kl',
code: 'asd',
version: 2
},
{
id: 'h',
name: 'mn',
code: 'faf',
version: 3
},
{
id: 'i',
name: 'op',
code: 'dfs',
version: 1
},
]
}
]
const allowed = ['id', 'name']
let result = [{
id: 1,
row: [{
id: 'a',
name: 'ab'
},
{
id: 'b',
name: 'bc'
},
{
id: 'c',
name: 'cd'
},
]
},
{
id: 2,
row: [{
id: 'd',
name: 'ef'
},
{
id: 'e',
name: 'gh'
},
{
id: 'f',
name: 'ij'
},
]
},
{
id: 3,
row: [{
id: 'g',
name: 'kl'
},
{
id: 'h',
name: 'mn'
},
{
id: 'i',
name: 'op'
},
]
}
]
result = data.filter(el => el.row.filter(elm => Object.fromEntries(allowed.map(k => [k, elm[k]]))));
console.log(result);
You can create a new array with Array.map.
Logic
row key and rest of keys.Object.fromEntriesconst data = [{
id: 1,
row: [
{ id: 'a', name: 'ab', code: 'sdf', version: 1 },
{ id: 'b', name: 'bc', code: 'def', version: 3 },
{ id: 'c', name: 'cd', code: 'afd', version: 2 },
]
},
{
id: 2,
row: [
{ id: 'd', name: 'ef', code: 'sdf', version: 1 },
{ id: 'e', name: 'gh', code: 'def', version: 3 },
{ id: 'f', name: 'ij', code: 'afd', version: 2 },
]
},
{
id: 3,
row: [
{ id: 'g', name: 'kl', code: 'asd', version: 2 },
{ name: 'mn', code: 'faf', version: 3 },
{ id: 'i', name: 'op', code: 'dfs', version: 1 },
]
}
]
const allowed = ['id', 'name'];
const result = data.map(({ row, ...rest }) => {
return {
...rest,
row: row.map(elm => Object.fromEntries(allowed.map(k => [k, elm[k]])))
}
});
console.log(result);Long way but it works:
const data = [
{id: 1, row: [
{id: 'a', name: 'ab', code: 'sdf', version: 1},
{id: 'b', name: 'bc', code: 'def', version: 3},
{id: 'c', name: 'cd', code: 'afd', version: 2},
]
},
{id: 2, row: [
{id: 'd', name: 'ef', code: 'sdf', version: 1},
{id: 'e', name: 'gh', code: 'def', version: 3},
{id: 'f', name: 'ij', code: 'afd', version: 2},
]
},
{id: 3, row: [
{id: 'g', name: 'kl', code: 'asd', version: 2},
{id: 'h', name: 'mn', code: 'faf', version: 3},
{id: 'i', name: 'op', code: 'dfs', version: 1},
]
}
];
const allowed = ['id', 'name'];
let res = [];
data.forEach((el) => {
let obj = {};
obj.id = el.id;
obj["row"] = [];
let row = buildArray(el.row);
obj["row"].push(row);
res.push(obj);
})
function buildArray(row) {
r = {};
allowed.forEach((k) => {
r[k] = row[0][k];
})
return r;
}
console.log(res)