Object equality comparison for input[radio] with ng-model and ng-value

Answer 1

Since I'm not yet able to add comments, so I have to reply here. Dana's answer worked ok for me. Although I'd like to point out in order to use his approach, one would have to implement the 'equals' function on the objects in the collection. See below example:

.controller('ExampleController', ['$scope', function($scope) {
   var eq = function(obj) {
       return this.id === obj.id;
     };
   col = [{id: 1, name: 'pizza', equals: eq}, {id:2, name:'unicorns', equals: eq}, {id:3, name:'robots', equals: eq}];

   $scope.collection = col;
   $scope.my = { favorite : {id:2, name:'unicorns'} };

 }]);

See the plunker link.