Question

Using the new mvc4 now gives us access to use facebook oauth otb.

I have created a new app within facebook and have set some extra requirements around asking permission for the users email address/location & birthday.

I have saved the changes within fb and when clicking on the preview auth dialog I can see the extra permissions I want displayed within the preview window.

When I try authenticate against facebook I am not asked if I give permission to the extra fields I setup within facebook.

Is there something else within my mvc application I need to change to pass these extra requirements to facebook?

Thanks for any help.

Answer 1

It seems that you have to write your own custom provider. If so, you should look at
http://blogs.msdn.com/b/webdev/archive/2012/08/23/plugging-custom-oauth-openid-providers.aspx
and
http://blog.mrroa.com/post/30454808112/asp-net-custom-linkedin-oauth-provider

What I do is :
In AccountController :
– I add using Facebook; (facebook.dll from http://www.csharpsdk.org)
also in AccountController, find in ExternalLoginCallback:

Here, i use the facebook c# sdk to ask for extra permissions before invoking CreateOrUpdateAccount.

I don’t think this is the best solution but it works.