AngularJS - ngModel in nested directives
Simple example for StackOverflow (http://stackoverflow.com/questions/19429958/passing-ng-model-in-nested-directives)
HTML
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.min.js"></script>
<div ng-app="MyApp" ng-controller="MyCtrl">
<label>First</label>
<input ng-model="obj.prop" type="text" /><br />
<div ng-show="obj.prop">
<label>Second</label>
<input ng-model="obj.prop" type="text" /><br />
</div>
<label>Third</label>
<input ng-model="obj.prop" type="text" /><br />
</div>
JavaScript
var myApp = angular.module('MyApp', []);
myApp.controller('MyCtrl', function ($scope) {
});