Angular.js and ng-switch-when - emulating enum

I think I would create a service that could have all your enums:

angular.module('Enums', []).
   factory('Enum', [ function () {

      var service = {
        freeze: {login:1, logout:2 },
          somethingelse: {abc:1,def:2}
      };

     return service;

    }]);

Your app definition would be like this:

var app = angular.module('myApp', ['Enums']);

Then your controllers you could inject them when you need them:

function LoginCheckCtrl($scope, Enum) {
    if (1==Enum.freeze.login) // as an example
    if (1==Enum.somethingelse.abc)  // another example

Services are singletons so this effectively will give you a set of enums you could define.

As for the ngSwitch when directive, I believe it requires a string (please correct me if I'm wrong). A couple references:

https://groups.google.com/forum/?fromgroups#!topic/angular/EH4W0y93ZAA https://github.com/angular/angular.js/blob/master/src/ng/directive/ngSwitch.js#L171

An alternate way to achieve what you want would be to use ng-show/ng-hide

<div ng-include="'login'" ng-show='stateEnum.login==loginData' ...>

Have you looked at this answer on stackoverflow?: Ways to enum

Best answer is from 2008, so look at the newer/latest posts for clues. As I read them, you can get the answer as any primitive you need but I haven't tested this yet. Can anyone suggest a best answer to use with Angular from this post?

I would suggest using angular.Module.constant. For instance:

var app = angular.module('app', []);
app.constant('Weekdays', {
    Monday: 1,
    Tuesday: 2,
    Wednesday: 3,
    Thursday: 4,
    Friday: 5,
    Saturday: 6,
    Sunday: 7
});
app.controller('TestController', function(Weekdays) {
    this.weekday = Weekdays.Monday;
});

Here's a real world example of how to emulate enums using Angular with standard JavaScript and BootStrap. This is to display details of an order also called a ticket.

Define your enums as Angular constants:

 app = angular.module("MyApp", [])
.constant('ENUMS',
    {
        TicketStatusText: { 0: 'Open', 3: 'Ready', 1: 'Closed', 2: 'Overring' },
        TicketStatus: {Open:0, Ready:3, Closed:1, Overring:2}
    }
    )

Your controller code should look something like this:

app.controller("TicketsController", function ($scope, $http, ENUMS) {
$scope.enums = ENUMS;

Your HTML with BootStrap should look something like this:

<table>
<tr ng-repeat="ticket in tickets" ng-class="{danger:ticket.CurrentStatus==enums.TicketStatus.Overring}">
<td>
<strong>{{ticket.TransNumber}}</strong>
</td>
<td>
{{enums.TicketStatusText[ticket.CurrentStatus]}}
</td>

Notice in ng-class in combination with BootStrap we compare the current status of the ticket model to enums.TicketStatusText.Overring; this will change the color of the row for any tickets that have an Overring status(2).

Also in one of the columns we want to display the ticket status as a string and not as an integer. So this is used: {{enums.TicketStatusText[ticket.CurrentStatus]}}