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@colingourlay
Last active October 22, 2021 15:16
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Lodash / Underscore sort object keys. Like _.sortBy(), but on keys instead of values, returning an object, not an array. Defaults to alphanumeric sort.
var obj = {b: 3, c: 2, a: 1};
_.sortKeysBy(obj);
// {a: 1, b: 3, c: 2}
_.sortKeysBy(obj, function (value, key) {
return value;
});
// {a: 1, c: 2, b: 3}
_.mixin({
'sortKeysBy': function (obj, comparator) {
var keys = _.sortBy(_.keys(obj), function (key) {
return comparator ? comparator(obj[key], key) : key;
});
return _.object(keys, _.map(keys, function (key) {
return obj[key];
}));
}
});
@sobinsunny
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@gor181 Great!! @ @

@simonyost
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Thank you!!

@kstankov
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@gor181 - thanks!

@KarmaBlackshaw
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KarmaBlackshaw commented Jun 25, 2020

Hi! I'm having trouble reversing this object using the function tho

const object = {
  202: {
    id: 61,
    play_date: '2020-05-28 16:53:00',
    round: 204,
    status: 'N'
  },
  203: {
    id: 66,
    play_date: '2020-05-28 16:53:00',
    round: 203,
    status: 'N'
  }
}

Expected output will be:

{
  203: {
    id: 66,
    play_date: '2020-05-28 16:53:00',
    round: 203,
    status: 'N'
  },
  202: {
    id: 61,
    play_date: '2020-05-28 16:53:00',
    round: 204,
    status: 'N'
  }
}

@drex44
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drex44 commented Feb 19, 2021

Small variation that works with nested objects as well:

const sortByKeys = object => {
  const keys = Object.keys(object);
  const sortedKeys = _.sortBy(keys);

  return _.fromPairs(
    _.map(sortedKeys, key => {
      let value = object[key];
      if (typeof object[key] === "object" && !(object[key] instanceof Array)) {
        value = sortByKeys(value);
      }
      return [key, value];
    })
  );
};

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