angularJS parent scope not updating from directive - angularjs

Question

So here is my issue, I can't get my $scope.documents to update from my directive.$scope.parentUpdate({ documents: $scope.docType}) does not seem to execute at all an so my documents never updates. $scope.docType= resultgets all the data I need but it just does not push it back to the parent controller.
app.controller('docGridController',['$scope','getSideNav', 'getDocuments',
function($scope, getSideNav, getDocuments){
getSideNav().then(function(result){$scope.SideNav = result;
},
function(error){$scope.error = result;});
$scope.slideToggle = true;
$scope.documents=[];
$scope.update = function(k){
$scope.documents = k;
consle.log($scope.documents);
}}]);
app.directive('foSidenav',['getDocuments',function(getDocuments){
return{
replace: true,
scope: {
info:'=',
docType:'=',
parentUpdate:'&'
},
templateUrl:function(element,attr){
return attr.url;
},
controller: ['$scope','$element', '$attrs' ,'getDocuments',
function($scope,$element, $attrs, getDocuments){
$scope.selectDocType = function(id)
{
getDocuments(id).then(function(result){$scope.docType= result;
console.log($scope.docType);
alert('Printed results');
$scope.parentUpdate({ documents: $scope.docType});
},
function(error){$scope.error = result;});
};
}]
};
}]);
Here is the tag I am using in my template
<ul class="side-nav">
<li class="mainCat" ng-repeat=" item in info">
<a href="#" id="CatHeader" ng-click="slideToggle =! slideToggle">
<i class="{{item.displayIcon}} left-bar"></i>
<span ng-bind-html="item.label | html"></span>
</a>
<ul class="subCat slide-toggle" ng-show="slideToggle">
<li ng-repeat="subItem in item.docTypes">
<a href="#" ng-click="selectDocType(subItem.id)" >
<i class="fi-folder"></i>
<span ng-bind-html="subItem.Name | html"></span>
</a>
</li>
</ul>
</li>
and here is the directive call
<fo-sidenav url="{!URLFOR($Resource.FOPS_Resource, 'components/sidenav.html')}" info='SideNav' docType='documents' parentUpdate="update(documents)"></fo-sidenav>
Any ideas?? these scope are really throwing me off

Answer 1

I think the issue is with how you are using the variables from your isolated scope in the html. Now you are using them like below:
<fo-sidenav url="{!URLFOR($Resource.FOPS_Resource, 'components/sidenav.html')}"info='SideNav' docType='documents' parentUpdate="update(documents)"></fo-sidenav>
Try like the following:
<fo-sidenav url="{!URLFOR($Resource.FOPS_Resource, 'components/sidenav.html')}" info='SideNav' doc-type='documents' parent-update="update(documents)"></fo-sidenav>
For more information about read Matching Directives and Normalization sections here