angularjs - Angular.js directive dynamic templateURL

Question

I have a custom tag in a routeProvider template that that calls for a directive template. The version attribute will be populated by the scope which then calls for the right template.

<hymn ver="before-{{ week }}-{{ day }}"></hymn>

There are multiple versions of the hymn based on what week and day it is. I was anticipating to use the directive to populate the correct .html portion. The variable is not being read by the templateUrl.

emanuel.directive('hymn', function() {
    var contentUrl;
    return {
        restrict: 'E',
        link: function(scope, element, attrs) {
            // concatenating the directory to the ver attr to select the correct excerpt for the day
            contentUrl = 'content/excerpts/hymn-' + attrs.ver + '.html';
        },
        // passing in contentUrl variable
        templateUrl: contentUrl
    }
});

There are multiple files in excerpts directory that are labeled before-1-monday.html, before-2-tuesday.html, …

Answer 1

emanuel.directive('hymn', function() {
   return {
       restrict: 'E',
       link: function(scope, element, attrs) {
           // some ode
       },
       templateUrl: function(elem,attrs) {
           return attrs.templateUrl || 'some/path/default.html'
       }
   }
});

So you can provide templateUrl via markup

<hymn template-url="contentUrl"><hymn>

Now you just take a care that property contentUrl populates with dynamically generated path.