How can i share a link and photo with Instagram using rails.. Is it possible to post pictures to Instagram via the API
It would be helpful if there is some way to do this.
Instagram API documentation is what you should be looking into, but it's mostly for retrieving data from Instagram. It will not allow you to post something, only Instagram Partners can do that.
More on that here: https://developers.facebook.com/docs/instagram-api/content-publishing/