use Lodash to sort array of object by value
JavascriptArraysSortingLodashJavascript Problem Overview
I am trying to sort an array by 'name' value (using Lodash). I used the Lodash docs to create the solution below however .orderBy doesn't seem to be having any affect at all. Can anyone shed some light on the correct way to sort array?
Chars Array
[ { "id":25, "name":"Anakin Skywalker", "createdAt":"2017-04-12T12:48:55.000Z", "updatedAt":"2017-04-12T12:48:55.000Z" }, { "id":1, "name":"Luke Skywalker", "createdAt":"2017-04-12T11:25:03.000Z", "updatedAt":"2017-04-12T11:25:03.000Z" }]
Function Code
var chars = this.state.characters;
_.orderBy(chars, 'name', 'asc'); // Use Lodash to sort array by 'name'
this.setState({characters: chars})
Javascript Solutions
Solution 1 - Javascript
This method orderBy
does not change the input array,
you have to assign the result to your array :
var chars = this.state.characters;
chars = _.orderBy(chars, ['name'],['asc']); // Use Lodash to sort array by 'name'
this.setState({characters: chars})
Solution 2 - Javascript
You can use lodash sortBy (https://lodash.com/docs/4.17.4#sortBy).
Your code could be like:
const myArray = [
{
"id":25,
"name":"Anakin Skywalker",
"createdAt":"2017-04-12T12:48:55.000Z",
"updatedAt":"2017-04-12T12:48:55.000Z"
},
{
"id":1,
"name":"Luke Skywalker",
"createdAt":"2017-04-12T11:25:03.000Z",
"updatedAt":"2017-04-12T11:25:03.000Z"
}
]
const myOrderedArray = _.sortBy(myArray, o => o.name)
Solution 3 - Javascript
If you need to sort by date, you could use this solution:
orderBy(items, (a) => new Date(a.createdAt), ['asc']) // or 'desc'
If you are using moment
library, then:
orderBy(items, (a) => moment(a.createdAt), 'asc')
P.s. Note that the lodash
doesn't sort dates in string format, so you must convert it to Date object.