How do I filter an array with AngularJS and use a property of the filtered object as the ng-model attribute?

If I have an array of objects, and I want to bind the Angular model to a property of one of the elements based on a filter, how do I do that? I can explain better with a concrete example:

HTML:

<!DOCTYPE html>
<html ng-app>
    <head>
        <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>
        <meta charset=utf-8 />
        <title>JS Bin</title>
    </head>
    <body ng-controller="MyCtrl">
        <input ng-model="results.year">
        <input ng-model="results.subjects.title | filter:{grade:'C'}">
    </body>
</html>

Controller:

function MyCtrl($scope) {
  $scope.results = {
    year:2013,
    subjects:[
      {title:'English',grade:'A'},
      {title:'Maths',grade:'A'},
      {title:'Science',grade:'B'},
      {title:'Geography',grade:'C'}
    ]
  };
}

JSBin: http://jsbin.com/adisax/1/edit

I want to filter the second input to the subject with a grade ‘C’, but I don’t want to bind the model to the grade; I want to bind it to the title of the subject that has grade ‘C’.

Is this possible, and if so, how is it done?

Answer

<div ng-repeat="subject in results.subjects | filter:{grade:'C'}">
    <input ng-model="subject.title" />
</div>

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