ng-selected not working in select field - angularjs

Question

I am trying to set the default value of a select field to a set option but its not working and I can't seem to figure out what am I doing wrong?
In my controller I have:
$scope.interp_id = "2"; // set the default id
$http.get("web/controllers/get.php")
.then(function (response) {
$scope.interpreters = response.data.records;
});
get.php is a php file that returns json (this is working properly).
My select looks like:
<select ng-model="interpreters_id">
<option ng-repeat="x in interpreters" value="{{x.id}}" ng-selected="{{x.id == interp_id}}">{{x.first_name}} {{x.middle_name}} {{x.last_name}}</option>
</select>
When I go to view it in my browser it looks like:
but when I inspect the element it shows that option ng-selected is True.
what am I doing wrong?

Answer 1

ngOptions is the recommended way to use select elements in Angular.
Also, if you look at the ngSelected documentation there is a yellow box that states that it does not work properly with the select and ngModel properties which is, in a way, what you are trying to do.
ngRepeat will gladly repeat your option elements however it is not the correct way to work with a select element.
I have prepared a fiddle for you to try it out.
<div ng-app="ngOptionsApp">
<div ng-controller="ExampleController">
<select ng-model="selectedInterpreter" ng-options="interpreter as interpreter.name for interpreter in interpreters track by interpreter.id">
<option value="">Select an Interpreter</option>
</select>
{{selectedInterpreter}}
</div>
</div>
angular.module('ngOptionsApp', []).controller('ExampleController', ['$scope', function($scope) {
$scope.interpreters=[{id: 1, name:'Gill Bates'}, {id: 2, name:'Cohn Jarmack'}, {id: 3, name:'Melon Musk'}];
$scope.selectedInterpreter = $scope.interpreters[0];
}]);
Hope it helps ;)

Answer 2

You should not use the curly braces in ng-selected directive. May you try this?
<option ng-repeat="x in interpreters" value="{{x.id}}" ng-selected="x.id == interp_id">{{x.first_name}} {{x.middle_name}} {{x.last_name}}</option>
http://jsfiddle.net/endrcn/44j19ngp/