how to implement google+ sign-in with angularjs

Question

I have an AngularJS app, and I want to implement G+ sign-in. I've gone through their samples, and they work as standalone apps.

https://developers.google.com/+/web/signin/

In my Angular app, I am able to display the G+ sign-in button. But I'm stuck on the callback. Do I put the callback function in my controller js file?

If so, and given this controller:

app.controller('myController', function ($scope) {
    function signinCallback(authResult) {

On my data-callback, how do I name it so that it goes to signinCallback inside myController?

    <span id="signinButton">
      <span
        class="g-signin"
        data-callback="signinCallback"
        data-clientid="123456789.apps.googleusercontent.com"
        data-cookiepolicy="single_host_origin"
        data-requestvisibleactions="http://schemas.google.com/AddActivity"
        data-scope="https://www.googleapis.com/auth/plus.login https://www.googleapis.com/auth/plus.profile.emails.read"
      </span>
    </span>

Answer 1

The Google+ PhotoHunt sample app demonstrates an AngularJS integration with Google+. The sample is available in Ruby, Java, Python, and C#/.NET for web. Of note should be the following code in the AngularJS front-end:

Markup to render the button in:

<span id="signin" ng-show="immediateFailed">
  <span id="myGsignin"></span>
</span>

JavaScript to glue the markup to code:

$scope.signIn = function(authResult) {
  $scope.$apply(function() {
    $scope.processAuth(authResult);
  });
}

$scope.processAuth = function(authResult) {
  $scope.immediateFailed = true;
  if ($scope.isSignedIn) {
    return 0;
  }
  if (authResult['access_token']) {
    $scope.immediateFailed = false;
    // Successfully authorized, create session
    PhotoHuntApi.signIn(authResult).then(function(response) {
      $scope.signedIn(response.data);
    });
  } else if (authResult['error']) {
    if (authResult['error'] == 'immediate_failed') {
      $scope.immediateFailed = true;
    } else {
      console.log('Error:' + authResult['error']);
    }
  }
}

$scope.renderSignIn = function() {
  gapi.signin.render('myGsignin', {
    'callback': $scope.signIn,
    'clientid': Conf.clientId,
    'requestvisibleactions': Conf.requestvisibleactions,
    'scope': Conf.scopes,
    'apppackagename': 'your.photohunt.android.package.name',
    'theme': 'dark',
    'cookiepolicy': Conf.cookiepolicy,
    'accesstype': 'offline'
  });
}

Within processAuth, you should see an access token and can update your UI to reflect this. You can also see the full controller's JavaScript code on GitHub.