Getting ng-repeat to work inside of AngularJS's $interpolate service

Question

I am using the AngularJs-UI components for Bootstrap. I would like to insert a filled out template into one of the data elements for the popover feature. This works find for

Answer 1

$interpolate doesn't handle directives like ngRepeat ( Difference between parse, interpolate and compile ). $interpolate:

Compiles a string with markup into an interpolation function. This service is used by the HTML $compile service for data binding.

To handle ngRepeat and other directives you want $compile. But for your use case $compile is going to result, unfortunately, in a number of changes because:

• It needs a scope to compile against rather than just a context like $interpolate. Moreover it needs the scope thingy is on.

  This means we'll need to reference your properties like so {{thingy.blah}} instead of {{blah}} inside your template.

• The compile needs to happen when the popup is on the dom.

• The popup is only on the dom when it's open.

So we can't just replace $interpolate with $compile inside your service.

One approach is to replace data-ng-bind-html with the following directive that acts like an ng-bind-html that has a built in $compile (clearly you should only use this with html that you know is safe).

.directive('compile', function($compile) {
  return function(scope, element, attrs) {
    scope.$watch(
      function(scope) {
        return scope.$eval(attrs.compile);
      },
      function(value) {
        var result = element.html(value);
        $compile(element.contents())(scope.$parent.$parent);
      }
    );
  };
});

Used like so (with compile replacing ng-bind-html:

  <div class="popover-content" compile="content"></div>

One issue is that we need thingy to be in scope. There's a few of ways of handling that- but for demonstration purposes I've manually gone back up to the scope the popover is called from - which is 2 scopes up thus the scope.$parent.$parent.

Using this compile directive you no longer $interpolate or $sanitizeso the function in your service can shrink down to just returning the appropriate template:

function html_for() {
  var template = $templateCache.get('thingyTemplate.html');
  return template;
}

demo fiddle