to update in ng-rpeat angularjs - angularjs

Question

I want to update username in ng-repeat directive. I am able to edit if I take a variable but unable to do so in an array. Here title is a variable and users is an array. I want to update a user's name
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.min.js"></script>
<div ng-app>
<div ng-controller="ClickToEditCtrl">
<div ng-hide="editorEnabled">
{{title}} {{name}}
<br>users
<ul> <li ng-repeat="(key,u) in users">
{{key+1}} name: {{u.name}} Edit title
</li></ul>
</div>
<div ng-show="editorEnabled">
<input ng-model="editableTitle" ng-show="editorEnabled"><br><br>
<input ng-model="editableUserName" ng-show="editorEnabled">
Save
or
cancel.
</div>
</div>
</div>
<script>
function ClickToEditCtrl($scope) {
$scope.title = "Welcome to this demo!";
$scope.users = [{'name':'A'},{'name':'B'}];
$scope.editorEnabled = false;
$scope.enableEditor = function(name) {
$scope.editorEnabled = true;
alert(name);
$scope.editableTitle = $scope.title;
$scope.editableUserName = name
};
$scope.disableEditor = function() {
$scope.editorEnabled = false;
};
$scope.save = function() {
$scope.title = $scope.editableTitle;
$scope.users.name = $scope.editableUserName;
$scope.disableEditor();
};
}
</script>`
`

Answer 1

Ideally, you'd like to have an id which doesn't change that associates to each user.
This plunker is your answer plunker
I have gone and used the $index of the array as an id, but ideally you should give each user an id
ng-click="enableEditor($index)"
I have also altered some of your functions to record the index

Answer 2

For the edit pass in the user you are editing:
Edit title
Then store a reference to that user.
var editableUser;
$scope.enableEditor = function(user) {
$scope.editorEnabled = true;
$scope.editableTitle = $scope.title;
$scope.editableUserName = user.name;
editableUser = user;
};
Then in the save, save the changes to the user:
$scope.save = function() {
$scope.title = $scope.editableTitle;
editableUser.name = $scope.editableUserName;
$scope.disableEditor();
};
http://plnkr.co/edit/2VZk2Ej6DR4g51MjiC3j?p=preview