How to check the facebook application permission for specific user through graph api in rails?

Question

I want to check whether the user has give publish_stream permission to my application or not. If not want to get publish_stream permission.

Oldcastle

Answer 1

if you are using the Koala Gem just use:

#check wether wallpost is allowed
permissions = graph.get_connections('me','permissions')
@has_wallpost_permission = permissions.select{|o| o['permission'] == 'manage_pages'}.length == 1 

Laudable

That's half of it but how do you tell Koala to request certain permissions from the user when they authorise the app? – Indrawn

Answer 2

You must autorize user with publish_stream permission. In rails I do it with OmniAuth gem.

My post can help you - Publish stream in Facebook & Twitter with OmniAuth

Unbroken

The scenario is the user has authorize the app. I want to check if the user given certain permission to my app. if not I want to take that permission. Is this possible in facebook graph API or in rails 3. My app is running in facebook canvas. – Oldcastle

You can use FQL query to check permission – Unbroken

Answer 3

If you don't use Koala you can send request 'GET /{user-id}/permissions' This is described in 'Checking Current Permissions' section here https://developers.facebook.com/docs/facebook-login/permissions/v2.1

Authenticity