ios - What permissions does the facebook app need in order to post on the timeline of the user who logged in using Facebook Login? -

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i building ios app user takes photo, writes title, description , posts on his/her timeline. before actual posting takes place user has login using facebook , authorize himself/herself.

our backend on ruby on rails , using koala gem.

so, when user logs in using facebook , reaches authentication screen says "this app doesn't post on facebook" however, want do. so, confused permissions need facebook users can post on own timelines using app.

it not user_posts. permissions need?


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