`How can I retrieve scope variables from a directive in angular.js?`

In my AngularJS web application, I have created a custom filter to search through posts:

app.filter('myfilter', function() {
return function(postList, term) {
  var out = [];

  if(!postList) return out;    
  if(!term) return postList;

  var i;
  for(i = 0; i < postList.length; i++){
    if(postList[i].title.indexOf(term) >=0){
        out.push(postList[i]);
    }

    if($scope.isContentFilterOn.checked){
        if(postList[i].text.indexOf(term) >=0){
                out.push(postList[i]);
            }
        }
    }
    }
    return out;
}
});

The problem with the above code is that it cannot access scope variables directly. Simply passing $scope as an argument will not work either. Is there a more efficient way to achieve this?

Edit: source http://plnkr.co/edit/G9BFBTaKdUmki8MJegrn?p=catalogue

Answer №1

To utilize the filter, simply pass multiple scope members separated by a colon...

myfilter:filterTerm:isContentFilterOn

Make sure to update the method signature of the filter accordingly...

function(postList, term, isContentFilterOn) {

Adjust its usage as needed...

 if (isContentFilterOn) { 

Remember to initialize isContentFilterOn in the scope as false initially for the filter to work properly...

$scope.isContentFilterOn = false;

Check out the updated Plunker example to see how it should be implemented...

http://plnkr.co/edit/vPTBws0JBpwvKY0ywCPC?p=preview

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