I need to filter only posts that have within categories, eg desenvolvimento: true.

I tried to use the underscore , but could not get it back me all the posts, needed only the posts that contain this filter.

```
$scope.filter = 'desenvolvimento';
$scope.teste = _.where($scope.posts, 'desenvolvimento');

```

RESOLVED!!! example in JsBin

Follows the JSBin:
<https://jsbin.com/turodayaqe/1/edit?html,output>