Sort items in an array by more than one field with lodash

Question

How can I sort an array of objects by more then one field using lodash. So for an array like this:

[   {a: 'a', b: 2},   {a: 'a', b: 1},   {a: 'b', b: 5},   {a: 'a', b: 3}, ] 

I would expect this result

[   {a: 'a', b: 1},   {a: 'a', b: 2},   {a: 'a', b: 3},   {a: 'b', b: 5}, ] 

Answer 1

This is much easier in a current version of lodash (2.4.1). You can just do this:

var data = [     {a: 'a', b: 2},     {a: 'a', b: 1},     {a: 'b', b: 5},     {a: 'a', b: 3}, ];  data = _.sortBy(data, ["a", "b"]);  //key point: Passing in an array of key names  _.map(data, function(element) {console.log(element.a + " " + element.b);}); 

And it will output this to the console:

"a 1" "a 2" "a 3" "b 5" 

Warning: See the comments below. This looks like it was briefly called sortByAll in version 3, but now it's back to sortBy instead.