Won't work when using the controllerAs syntax or ng-controller="test as t" about angular-dragdrop HOT 2 CLOSED

      var objExtract = extract(callbackName),
          fnString = objExtract.fnString,
          args = [event, ui].concat(objExtract.args);

      return (_objNestedAttrGet(scope, fnString)).apply(scope, args);

      function extract(callbackName) {
        var atStartBracket = callbackName.indexOf('(') !== -1 ? callbackName.indexOf('(') : callbackName.length,
            atEndBracket = callbackName.lastIndexOf(')') !== -1 ? callbackName.lastIndexOf(')') : callbackName.length,
            args = callbackName.substring(atStartBracket + 1, atEndBracket), // matching function arguments inside brackets
            fnString = callbackName.substr(0, atStartBracket); 

        return {
          args: $.map(args && args.split(',') || [], function(item) { return [$parse(item)(scope)]; }),
          fnString: fnString
        }
      }

      function _objNestedAttrGet(obj, nestedAttr) {
        if (obj === undefined) return undefined;
        var arrAttrTree = nestedAttr.split('.');

        for (var bit = 0; bit < arrAttrTree.length; bit++) {
          obj = obj[arrAttrTree[bit]];
          if (bit < arrAttrTree.length - 1) {  
            if (!obj) return undefined;  
          } else {
            return obj;
          }
        }
      }