Is this a secure and efficient way to access a json property with AngularJS?

I'm starting on AngularJS and I'd like to show this code that is accessing a route parameter's property.. Is it safe/best practice to do it this way?

angular.module('messagecat', []).
  config(['$routeProvider', function($routeProvider) {
  $routeProvider.
      when('/messages', {templateUrl: '/bundles/acmestore/js/partials/messages-list.html',   controller: MessagesListCtrl}).
      when('/messages/:messageId', {templateUrl: '/bundles/acmestore/js/partials/message-detail.html', controller: MessageDetailCtrl}).
      otherwise({redirectTo: '/messages'});
}]);

/*controller*/

function MessagesListCtrl($scope, $http) {
  $http.get('/messages').success(function(data) {
    $scope.messages = data;
  });
}

/* Does this following bit seem reasonable to you?*/
function MessageDetailCtrl($scope, $routeParams, $http) {
  $http.get('/messages').success(function(data) {
    $scope.messages = data[$routeParams.messageId];
    //console.log($scope.messages);
  });
}

the json model: 

[
    {
        "id": 1,
        "iam": 1,
        "youare": 2,
        "lat": 50.8275853,
        "lng": 4.3809764,
        "msgbody": "Lorem ipsum lorem ipsum lorem ipsum"
    }
]