item-handle in isolate scope issue fix

dist/ng-sortable.js

@@ -258,6 +258,13 @@
                  *         moveTo: moveTo, isSameParent: isSameParent, isOrderChanged: isOrderChanged, eventArgs: eventArgs, apply: apply}}
          */
         dragItem: function (item) {
+          function getAncestorProperty(object, property){
+            for(var curScope = object; curScope.$parent; curScope = curScope.$parent){
+              if(curScope.hasOwnProperty(property)) {
+                return curScope[property];
+              }
+            }
+          }
 
           return {
             index: item.index(),
@@ -317,7 +324,7 @@
 
                 // if the dragged item is not already there, insert the item. This avoids ng-repeat dupes error
                 if (this.parent.options.allowDuplicates || this.parent.modelValue.indexOf(this.source.modelValue) < 0) {
-                  this.parent.insertItem(this.index, this.source.modelValue);
+                  this.parent.insertItem(this.index, getAncestorProperty(this.source, 'modelValue'));
                 }
               } else if (!this.parent.options.clone) { // prevent drop inside sortables that specify options.clone = true
                 // clone the model value as well
@@ -659,6 +666,14 @@
             }
           });
 
+          scope.index = function () {
+            for(var curScope = scope; curScope.$parent; curScope = curScope.$parent){
+              if(curScope.hasOwnProperty('$index')) {
+                return curScope.$index;
+              }
+            }
+          };
+
           scope.$on('$destroy', function () {
             angular.element($document[0].body).unbind('keydown', escapeListen);
           });