Can you use variables with NG-CLASS active link with Angular?
I want to use a loop to create my navigation Here is my code I keep getting an error saying it won't evaluate as a string? The code that I wrote is so that it will loop through the $scope.navigation and use that to write out the navigation so I don't have to write out each list and anchor tag?
<!DOCTYPE html>
<html ng-app="Sample">
<head>
<title>Sample Angular App</title>
<script src="Scripts/basket.js"></script>
<link rel="stylesheet" href="css/global.css"/>
<script src="Scripts/angular.min.js"></script>
<script src="controllers/main.js"></script>
<script src="routes/route.js"></script>
</head>
<body>
<div class="navigation" ng-controller="AppCtrl">
<ul class="cf" >
<li class="link {{link.name}}" ng-class="{{link.name + 'Active'}}" ng-repeat="link in navigation">
<a href="{{link.route}}" ng-click="setActive($index)">{{link.name | uppercase}}</a>
</li>
</ul>
</div>
<div class="wrapper">
<div ng-view>
</div>
</div>
</body>
</html>
My main js script file looks like this:
function AppCtrl($scope) {
$scope.navigation = [
{ name:"main", route:"#/"},
{ name:"edit", route:"#/edit" },
{ name: "save", route: "#/save" },
{ name: "settings", route: "#/settings" }
];
$scope.currentPage = null;
$scope.setCurrentPage = function (index) {
$scope.currentPage = $scope.navigation[index];
}
$scope.setActive = function (index) {
angular.forEach($scope.navigation, function (value, key) {
$scope[value.name + 'Active'] = "";
});
var active = $scope.navigation[index].name;
$scope[active + 'Active'] = "active";
}
}
It keeps giving me an error saying that the {{link.name}} cannot be evaluated as a string but it is a string? Is there a way to loop through a $scope.navigation and get it to output the navigation without having to manually write it out and still add the setActive function? I am kind of new at working with angularjs. Is there a way to fix this issue or is it that doing things this way is not allowed in angular?
Answer
There's a much better/easier way to accomplish setting a active CSS class. Just save a single value in your scope that holds the value of what is active. Something like this:
$scope.setActive = function (index) {
$scope.activeIndex = index;
};
Then ng-class allows you to give it an map where "the names of the properties whose values are truthy will be added as css classes to the element" (From http://docs.angularjs.org/api/ng.directive:ngClass).
So you can set the CSS class if the $index is the activeIndex:
ng-class="{active: $index == activeIndex}"