title: AngularJS ng-model $scope in ng-repeat is undefined
body: <p>I apologize in advance if i'm not wording this properly. I have a textbox with <code>ng-model</code> inside an <code>ng-repeat</code> and when I try to get the textbox value it's always <code>undefined</code>. I just want it to display whatever I type in the corresponding textbox. </p>
  
  <p>It seems to be an issue with the <code>$scope</code>, so how would I make the <code>$scope.postText</code> global or at the controller root level so it can be accessible?</p>
  
  <p>Here's the JSFiddle to help clear things up: <a href="http://jsfiddle.net/stevenng/9mx9B/14/">http://jsfiddle.net/stevenng/9mx9B/14/</a></p>