Sorting an array of objects based on object property

Question

I have an array like so:

[
  {
    "name": "aabb",
    "commit": {
      "id": "1",
      "message": "aabb ",
      "committed_date": "2018-04-04T15:11:04.000+05:30",
      "committer_name": "ak",
      "committer_email": "[email protected]"
    },
    "protected": false
  },
  {
    "name": "aacc",
    "commit": {
      "id": "2",
      "message": "aacc ",
      "committed_date": "2018-02-04T15:11:04.000+05:30",
      "committer_name": "ak",
      "committer_email": "[email protected]"
    },
    "protected": false
  },
  {
    "name": "aadd",
    "commit": {
      "id": "3",
      "message": "aadd ",
      "committed_date": "2018-04-01T15:11:04.000+05:30",
      "committer_name": "ak",
      "committer_email": "[email protected]"
    },
    "protected": false
  }
]

I need to sort this array based on committed_date. How do I do that?

Do I have to loop and write a custom sorting function or does Ruby offers something out-of-box?

arr.sort_by { |h| h[:commit][:committed_date] } #=> [{:name=>"aacc",...}, {:name=>"aadd",...}, {:name=>"aabb",...}]. There is no need to convert the date to a date object. This is a pure-Ruby question so you don't need the Rails tag. — Cary Swoveland
– Cary Swoveland, Commented Feb 7, 2019 at 7:21
@CarySwoveland That applies if they're all in the same +05:30 time zone, otherwise you need to do something to standardize the zones. — mu is too short
– mu is too short, Commented Feb 7, 2019 at 8:09

Umar Khan · Accepted Answer · 2019-02-07 07:32:14Z

2

Using sort_by

array.sort_by {|obj| obj.attribute}

Or more concise

array.sort_by(&:attribute)

In your case

array.sort_by {|obj| obj[:commit][:committed_date]}

answered Feb 7, 2019 at 7:32

Umar Khan

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1 Comment

ArunKolhapur Over a year ago

I went ahead with this solution. Thanks Umar and Cary.

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