Angular js - ng-class="" with simple condition won't work

Question

Hi, i'm trying to add a class to an element via ng-class. As you can see, the code is very simple but it doesn't add the class:

app.run(function($rootScope, $location,$http,ngDialog,array_helper){
    var update =  function() {
        /*CONFIG PARAMS*/
        $rootScope.config = {};
        $rootScope.config.app_routes = [
            "/",
            "/channels",
            "/channels/create",
            "/users",
            "/auth/login",
            "/auth/signup"
        ];
        console.log($rootScope.config.app_url);
        console.log($rootScope.config.app_routes.indexOf($rootScope.config.app_url));
    };
    $rootScope.$on('$routeChangeStart', function() { 
        update(); 
    });
});

Then in the view, i do:

<div ng-view ng-animate class="" ng-class="{'slide': config.app_routes.indexOf(config.app_url) == -1}"></div>

But it seems it never works, as it never adds the class slide. Meanwhile console.log works great and returns -1 only when it is right :O

As I know, indexOf is not supported in some browsers. If that's the case, you need a polyfill — Khanh TO
– Khanh TO, Commented Feb 1, 2014 at 9:21
@KhanhTO it won't work only where it is supported man :d on Chrome it doesn't works — Filippo oretti
– Filippo oretti, Commented Feb 1, 2014 at 9:21

Matt Way · Accepted Answer · 2014-02-01 10:06:59Z

8

Move your logic into a scope variable:

<div ng-view ng-animate ng-class="{ 'slide': someVar }"></div>

and set $scope.someVar = true whenever config.app_routes.indexOf(config.app_url) == -1. How you do this depends how and when config.app_routes is updated.

answered Feb 1, 2014 at 10:06

Matt Way

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1 Comment

Kostas Over a year ago

I had the same issue using a variable inside controller's vm. Moving the variable to $scope solved the problem.

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