ng-class set class name from dynamic value and add extra conditions - angularjs

Question

I was looking for the syntax to add classname from a value.
Just before giving up ,i found here an answer that works.
Now the problem is you can't add , like you would normally and add more conditions.
What would be the correct syntax for Ex2 to work?
Ex1: This works:
ng-class="{'{{obj.status}}' : obj.status}"
Ex2: This doesn't work: (also no error in the console)
ng-class="{'{{obj.status}}': obj.status, 'isEmployee': status == 'isEmployee'}"
Update:
I didn't change anything relevant any now it works >< Give me some time to figure out what the hell is going on ...
I know what i did to make it work. I was trying to change something else and i added this to the controller that made it work, because it's basically the same data :
$scope.status= obj.status
This would be the solution in my case.
Copy/Pasted the exact code for the button, since you all say it should work. Can you spot something wrong with it?
<md-button ng-class="{'{{editedObject.interviewStatus}}' : editedObject.interviewStatus, 'isEmployee': interviewStatus == 'isEmployee'}" aria-label="OpenStatusMenu" ng-click="$mdMenu.open($event)">

Answer 1

please check your obj and status value it's look like this?
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope,$http,$q) {
$scope.obj = {
"status":"abc"
}
$scope.status = "isEmployee";
});
.abc{
color: blue;
}
.isEmployee{
background-color: pink;
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl">
<span ng-class="{'{{obj.status}}': obj.status, 'isEmployee': status == 'isEmployee'}">both class added</span>
</div>

Answer 2

A comma should work. You might have forgotten the " at the end?