Angular: How to toggle a variable back and forth between two strings

Angular HTML Button

a(ng-click="") toggle

Variable Toggle

var map = {
  {
    name: 'item1',
    status: 'view'
  },
  {
    name: 'item2',
    status: 'view'
  },
  {
    name: 'item3',
    status: 'edit'
  },
  {
    name: 'item4',
    status: 'edit'
  }
}
var toggleViewState = function(id){
  var statuses = ['view','edit'];
  map[id].status = statuses[1-statuses.indexOf(map[id].status)];
}