fix(compile): assign ctrl return values correctly for multiple directives

Fixes #12029
Closes #12036

Author: Narretz

src/ng/compile.js

@@ -2007,9 +2007,12 @@ function $CompileProvider($provide, $$sanitizeUriProvider) {
           for (i in elementControllers) {
             controller = elementControllers[i];
             var controllerResult = controller();
+
             if (controllerResult !== controller.instance) {
+              // If the controller constructor has a return value, overwrite the instance
+              // from setupControllers and update the element data
               controller.instance = controllerResult;
-              $element.data('$' + directive.name + 'Controller', controllerResult);
+              $element.data('$' + i + 'Controller', controllerResult);
               if (controller === controllerForBindings) {
                 // Remove and re-install bindToController bindings
                 thisLinkFn.$$destroyBindings();

test/ng/compileSpec.js

@@ -4592,6 +4592,41 @@ describe('$compile', function() {
     });
 
 
+    it('should correctly assign controller return values for multiple directives', function() {
+      var directiveController, otherDirectiveController;
+      module(function() {
+
+        directive('myDirective', function(log) {
+          return {
+            scope: true,
+            controller: function($scope) {
+              return directiveController = {
+                foo: 'bar'
+              };
+            }
+          };
+        });
+
+        directive('myOtherDirective', function(log) {
+          return {
+            controller: function($scope) {
+              return otherDirectiveController = {
+                baz: 'luh'
+              };
+            }
+          };
+        });
+
+      });
+
+      inject(function(log, $compile, $rootScope) {
+        element = $compile('<my-directive my-other-directive></my-directive>')($rootScope);
+        expect(element.data('$myDirectiveController')).toBe(directiveController);
+        expect(element.data('$myOtherDirectiveController')).toBe(otherDirectiveController);
+      });
+    });
+
+
     it('should get required parent controller', function() {
       module(function() {
         directive('nested', function(log) {