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/ 5 Years ago, thu, november 7, 2019, 12:00:00
I have two JSON data with multi-stage nesting. I want compare it by following conditions:
1) if name in the first object equal to name in the second object compare them prop arrays, else if nothing equal names in two object return empty array;
2) compare objects into two prop arrays and find difference;
3) return new object with difference from first and second arrays.
const p1 = [{
name: 'B [1]', // name equals and prop differnce, then comparing it
prop: [{
A: { A: 1, B: 2 },
B: { A: 1, B: 2 },
C: { C: 78, D: 4, T: 7, } }],
}, {
name: 'B [2]', // name equals, then skiping it
prop: [{
A: { A: 1, B: 2 },
B: { A: 1, B: 2 },
D: { C: 3, D: 4, Y: 13 } }],
}, {
name: 'B [3]', // name equals and prop differnce, then comparing it
prop: [{
E: { A: 1, B: 2 },
R: { A: 1, B: 2 },
T: { C: 3, D: 4, } }],
}, {
name: 'B [4]', // name and prop equals, then skiping it
prop: [{
A: { A: 1, B: 2 },
S: { A: 1, B: 2 },
D: { C: 3, D: 4, } }],
}]
const p2 = [{
name: 'B [1]', // name equals and prop differnce, then comparing it
prop: [{
A: { A: 1, B: 8 },
B: { A: 1, B: 2 },
C: { C: 3, T: 7, O: 9 } }],
}, {
name: 'B [6]', // name not equals, then skiping it
prop: [{
A: { A: 1, B: 2 },
B: { A: 1, B: 2 },
D: { C: 3, D: 4 } }],
}, {
name: 'B [3]', // name equals and prop differnce, then comparing it
prop: [{
E: { A: 1, B: 2 },
R: { A: 1, B: 2, U: 150 },
T: { C: 3, D: 4, } }],
}, {
name: 'B [4]', // name and prop equals, then skiping it
prop: [{
A: { A: 1, B: 2 },
S: { A: 1, B: 2 },
D: { C: 3, D: 4, } }],
}]
The result should look like this:
const result = [{
name: 'B [1]',
propOne: [{
A: { B: 2 },
C: { C: 78, D: 4, O: 'Missing' }
}],
propTwo: [{
A: { B: 8 },
C: { C: 3, D: 'Missing', O: 9 }
}],
},{
name: 'B [3]',
propOne: [{
R: { U: 'Missing' }
}],
propTwo: [{
R: { U: 150 }
}]
}]
I also bitterly attach my worthless code here, which does nothing.
const compare = (p1, p2) => {
return p1.reduce((acc, curr) => {
p2.reduce((acc2, curr2) => {
if (curr.name === curr2.name) {
const keys1 = R.fromPairs(Object.keys(curr.prop[0]).map(x => ([x, curr.prop[0][x]])));
const keys2 = R.fromPairs(Object.keys(curr2.prop[0]).map(x => ([x, curr2.prop[0][x]])));
}
return acc;
}, [])
return acc;
}, [])
}
I would be extremely grateful for any help and advice.
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