Form action with variable not valid after update to 1.2

Question

I was generating a form action in my previous version of AngularJS using this code:

Answer 1

Since Angular 1.2.x, you can bind only one expression as URL.

Hence, on your controller, do the following:

$scope.actionUrl = $scope.api + '/products/image';

And in the template:

Update

As suggested by @Fourth: