Get Request IDs when user clicks "Send Request" on Facebook Request UI

The Facebook documentation for user-initiated App Request Dialogues says that FB.ui should return a csv list of request_ids that were sent out by the user when they click "Send Request"

I'm totally lost as to when and how to retrieve this list. Do you have to开发者_如何学JAVA bind an event to the "Send Request" button? How can you get back the Request IDs when a user sends out requests?

Thanks so much!

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You get the list as soon as the send the requests. You can use ajax to send it to your server if you want:

FB.ui({
         'method':  'apprequests',
         'message': request_message
      }, 
      function(response){
        // response.request_ids contains comma separated list of ids.
      }
);