How to ask for permission in facebook application?

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I am developing a facebook application (FBML) and I want to ask for certain extended permissions for the first time a user comes to app. How to do that? Note that I am not using new graph API for this app.

Facebook link|improve this question asked Jun 9 '10 at 13:17Sarfraz90.8k1178149 97% accept rate.

There are two ways I can think of: You use the fb:prompt-permission tag to render a link which when clicked pops up the extended permissions dialog. You redirect non-auth'd users to the app login page, requesting the appropriate permissions: Example redirect URL: facebook.com/login.php?v=1.0&api_key=147433427237&next=http%3A%2F%2Fapps.facebook.com%2Fkickabout%2F&canvas=&req_perms=publish_stream See: developers.facebook.com/docs/authentication.

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