CODEWITHSUNDEEP
javascriptarraysnode.jsjsonobject
Daniel Fer
Daniel Fer

Reputation: 33

NodeJS JSON Structure

I currently have a json array structured like this:

[{"id": 1, "meeting": "1/3/2015 12:30:00 PM", "name": "John"},
{"id": 1, "meeting": "1/3/2015 13:30:00 PM"}, "name": "John"},
{"id": 2, "meeting": "1/5/2015 7:00:00 AM"}, "name": "Peter"},
{"id": 2, "meeting": "1/5/2015 8:00:00 AM"}, "name": "Peter"}]

How can I change the structure of my array to look like this?

[ {"id": 1, "name": "John", "meeting": [{"Time": "1/3/2015 12:30:00 PM", "Time": "1/3/2015 13:30:00 PM"}]},
{"id": 2, "name": "Peter", "meeting": [{"Time": "1/5/2015 7:00:00 AM", "Time": "1/5/2015 8:00:00 AM"}]}]

Upvotes: 2

Views: 323

Answers (1)

Jack Bashford
Jack Bashford

Reputation: 44107

You should use Array.prototype.reduce:

const data = [{"id": 1, "meeting": "1/3/2015 12:30:00 PM", "name": "John"}, {"id": 1, "meeting": "1/3/2015 13:30:00 PM", "name": "John"}, {"id": 2, "meeting": "1/5/2015 7:00:00 AM", "name": "Peter"}, {"id": 2, "meeting": "1/5/2015 8:00:00 AM", "name": "Peter"}];

//I fixed a typo in the above array

const merged = data.reduce((acc, { id, meeting, name }) => {
    if (acc.some(e => e.id == id)) {
        acc.find(e => e.id == id).meeting.push(meeting);
    } else {
        acc.push({ "id": id, "name": name, "meeting": [meeting]});
    }
    return acc;
}, []);

console.log(merged);

Upvotes: 1

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