orderBy multiple fields in Angular

Question

How to sort by using multiple fields at same time in angular? fist by group and then by sub-group for Example

$scope.divisions = [{'group':1,'sub':1}, {'group':2,'sub':10}, {'group':1,'sub':2},{'group':1,'sub':20},{'group':2,'sub':1},     {'group':2,'sub':11}]; 

I wanted to display this as

group : Sub-group

1 - 1

1 - 2

1 - 20

2 - 1

2 - 10

2 - 11

<select ng-model="divs" ng-options="(d.group+' - '+d.sub) for d in divisions | orderBy:'group' | orderBy:'sub'" /> 

Answer 1

Please see this:

http://jsfiddle.net/JSWorld/Hp4W7/32/

<div ng-repeat="division in divisions | orderBy:['group','sub']">{{division.group}}-{{division.sub}}</div> 

Answer 2

If you wants to sort on mulitple fields inside controller use this

$filter('orderBy')($scope.property_list, ['firstProp', 'secondProp']); 

See also https://docs.angularjs.org/api/ng/filter/orderBy