Leveraging ng-switch for template swapping

I'm currently facing an issue in my Angular app where I want to switch from a "sign in" form to a "sign up" form when the user clicks on the "Sign Up" button, but nothing happens upon clicking the button. The sign-in form persists on the screen without any console errors being thrown. Can someone guide me on what mistake I might be making?

My objective is to achieve this transition solely using HTML. Is it feasible to accomplish this task in such a manner?

UPDATE: After adding a signup function in my UserCtrl which manages signing in/out logic, now when I click on the sign-up button, the alert triggers. However, I encounter a console error stating

TypeError: boolean is not a function
.

$scope.signup = function() {
    alert('signup function hit');
    $scope.signup = true;
}

UPDATE 2:

<!DOCTYPE html>
<html  ng-app="myApp" >
<head>
    <title> My App</title>
    <link rel="stylesheet" type="text/css" href="css/app.css">
    <link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
    <link rel="stylesheet" type="text/css" href="css/bootstrap-theme.min.css">
    <link rel="stylesheet" type="text/css" href="css/signin.css">
     <link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap-glyphicons.css" rel="stylesheet"/>
</head>
<body ng-controller="MainCtrl">
<div ng-switch on="view.name">

    <div ng-switch-default ng-controller="UserCtrl">

        <div ng-show="!isAuthenticated">
            <form class = "form-signin">

                <div class="control-group">
                    <img src="img/logo.png">
                    <br />
                    <div class="controls">
                        <br />
                        <input type="text" ng-model="username" placeholder = "Email Address" >
                    </div>

                    <br />
                <div class="controls">
                    <input type="password" ng-model="password" placeholder = "Password" >
                </div>
                <div class="controls">
                    <button class = "btn btn-default" ng-click="signIn()">Sign In</button>
                    <button class = "btn btn-primary" ng-click="view.name = 'signup'">Register</button>


                </div>
            </div>
        </form>
    </div>


    <div ng-switch-when="signup" ng-controller = "UserNewCtrl" >
        <label>
             This is where my form should be when my signup button is clicked.
        </label>
    </div>  

    //This portion of index.html is visible only after a user has been authenticated

    <div ng-show="isAuthenticated">

        <div class="col-md-2">
            //MenuBar code is here
        </div>
        //Other templates get loaded here
    <div class="col-md-10">

    <div ng-view></div>

</div>

</div>
    </div>

    <script src="js/vendor.js"></script>
    <script src="js/app.js"></script>
    <script src="js/bootstrap.min.js"></script>
    <script src="js/jquery-1.10.2.js"></script>
    <script src="js/transition.js"></script>
    <script src="js/ui-utils.js"></script>



</div>
</body>
</html>

MainCtrl.js:

angular.module('myApp.controllers')
  .controller('MainCtrl', function($scope) {
    $scope.view={
      name: ''
    }; 
  })

Answer №1

In order to meet your specific requirements, a wrapper controller is necessary to contain the ng-switch on model because using ngSwitch results in creating a child scope.

Your view can be structured as follows:

<body ng-controller="mainCtrl">
  <div ng-switch on="view.name">
    <div ng-switch-default ng-controller="signInCtrl">
      <h1>This is the sign-in page</h1>
      <a href="javascript:void(0)" ng-click="signin()">Sign In</a>
      <br>
      <a href="javascript:void(0)" ng-click="view.name = 'signup'">Go to Sign Up Page</a>
    </div>
    <div ng-switch-when="signup" ng-controller="signUpCtrl">
      <h1>This is the sign-up page</h1>
      <a href="javascript:void(0)" ng-click="signup()">Sign Up</a>
      <br>
      <a href="javascript:void(0)" ng-click="view.name = null">Go to Sign In Page</a>
    </div>
  </div>
</body>

In this structure, mainCtrl contains the view.name, with ng-switch-default initially displaying the sign-in page. When you click

<a href="javascript:void(0)" ng-click="view.name = 'signup'">Go to Sign Up Page</a>

The view.name model is updated and the sign-up page is shown.

Feel free to check out the Demo

Answer №2

To activate the app controller, make sure it is placed within the html tag. Then, in your body tag, use a directive to check for a specific expression:

<html ng-app="myApp">
    <body ng-switch="signup">

For more information, visit this link.

The 'signup' value should be a boolean in your myApp scope and will change when the signIn requirements are met:

$rootScope.signup = true;

You can also accomplish similar results using the ng-show and ng-hide directives.

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