I am working with ruby on rails application.
I can make a user to signin facebook when he click the facebook
I am having a button as Add facebook button, in that, when the
click the button, he need to add one more facebook account.
Since a user is already logged in, i cant able to show the
signin page, it again logging with the same account.
Help me to solve this,
I thought of logout the previous account, and make signin for the
user… but for logout we need previous user access token… how can we
who is logged in presently in our system… Is there a query to find
person who is logged in presently in facebook