app.js

angular.module('myApp', [])
  .config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
	$routeProvider.
		when('/', {
			templateUrl: '../views/codeform.html',
			controller: 'MainController'
		}).
		when('/confirm/:code', {
			templateUrl: '../views/confirm.html',
			controller: 'ConfirmController'
		}).
		when('/error', {
			templateUrl: '../views/error.html',
		});
	$locationProvider.html5Mode(true);
}])

.factory('rsvpDataService', function($http) {
	var service = {};

	service.getRsvp = function(code) {
		return $http.get('/api/rsvps/'+code.toUpperCase());
	};

	service.updateRsvp = function(formData) {
		return $http.post('/api/rsvps/'+code.toUpperCase(), formData);
	}
	return service;
})

.controller('ConfirmController', ['$scope', '$routeParams', 'rsvpDataService', '$location', function($scope, $routeParams, rsvpDS, $location) {
	$scope.rsvp;

	getRsvp();
	console.log($scope.rsvp); // Undefined?

	function getRsvp() {
		rsvpDS.getRsvp($routeParams.code)
			.success(function(rsvp) {
				merge($scope.rsvp, rsvp);
				console.log(rsvp); // The correct RSVP object.
				if (!rsvp) {
					$location.path('/error');
				};
			})
			.error(function(error) {
				$scope.status = 'Unable to find an RSVP entry: ' + error.message;
			});
	}
	console.log($scope.rsvp); // Undefined?

}])

.controller('MainController', ['$scope', '$location', 'rsvpDataService', function($scope, $location, rsvpDS) {
	$scope.formData = {};

	$scope.fetchRsvp = function() {
		$location.path('confirm/' + $scope.formData.code)
	};
}]);

confirm.html

<div id="confirm-form" class="row">
	<div class="col-sm-8 col-sm-offset-2 text-center">
		<form>
			<div class="form-group">

				<!-- BIND THIS VALUE TO formData.text IN ANGULAR -->
				<input type="text" class="form-control input-lg text-center" placeholder="Enter your full name" ng-model="formData.name" ng-value="rsvp.name">
				<h4>{{rsvp.email}}</h4>
				<input type="text" class="form-control input-lg text-center" placeholder="Enter your Email address" ng-model="formData.email" value="{{ rsvp.email }}"> 
				<h3>Attending?</h3>
				<label>True
					<input type="radio" class="form-control input-lg text-center" ng-model="formData.attending" ng-value="true">
				</label>
				<label>False
					<input type="radio" class="form-control input-lg text-center" ng-model="formData.attending" ng-value="false">
				</label>
			</div>

			<button type="submit" class="btn btn-primary btn-lg" ng-click="fetchRsvp()">Add</button>
		</form>
	</div>
</div>