put two values in ng model at Angularjs - angularjs

Question

I need to show current location storage or current employee wheres the inventory is at the moment
<select class=" form-control" ng-model="location.name">
<option value="">Choose Location</option>
<optgroup label="Locations">
<option value="{{location.resource_uri}}" ng-repeat="location in locations">{{location.name}}</option>
</optgroup>
<optgroup label="Holder">
<option value="{{user.resource_uri}}" ng-repeat="user in users">{{user.first_name + ' ' + user.last_name}}</option>
</optgroup>
</select>
Can I put in ng-model two values, so if location is not null, i get current Location, if the location is null , i get employee name selected.

Answer 1

Take a look at this
Working Demo
html
<div class="form-control" ng-app="main" ng-controller="Controller">
<select ng-model="category">
<optgroup ng-repeat="category in categories" label="{{ category.name }}">
<option ng-repeat="subCat in category.items">
<span ng-switch="category.name">
<span ng-switch-when="Location">
{{ subCat.name }}
</span>
<span ng-switch-when="Holder">
{{subCat.first_name+" "+subCat.last_name}}
</span>
</span>
</option>
</optgroup>
</select>
{{category}}
</div>
script
var main = angular.module('main', []);
// Main Controller
main.controller('Controller', function ($scope) {
$scope.categories = [{
id: 5,
name: "Locations",
items: [{
resource_uri: 'ABC',
name: "ABC-Name"
}, {
resource_uri: 'XYZ',
name: "XYZ-Name"
}, {
resource_uri: 'LMN',
name: "LMN-Name"
}, {
resource_uri: 'PQR',
name: "PQR-Name"
}]
}, {
id: 17,
name: "Holder",
items: [{
first_name: 'Manu',
last_name: 'Mathew'
}, {
first_name: 'Sunny',
last_name: 'Mathew'
}, {
first_name: 'Jacob',
last_name: 'Mathew'
}, {
first_name: 'Vijay',
last_name: 'Mathew'
}]
}];
});