I'm trying to add a share button or "feed dialog" as Facebook now seem to be pushing, to posts on my website. I'm basically looking for a way to simply allow users to click the button and be sent to the share preview page to post to their timeline or a friend's timeline etc.
The problem is that I don't really need an app (or at least I don't see the need in an app) and I'd like to avoid using their deprecated sharer url method.
What are my options? Can I use the feed dialog method without creating an app? I've tried going through their documentation but it just confuses me.
I'm not fussed whether it's JavaScript that opens a popup or if it redirects to a separate page (provided a redirect url can be provided to return users to the original page on my website).
you definitely need an app for the FB.ui feed dialog, but the user does not have to be logged in. Without an app, you can either use the sharer.php in a javascript popup, or you can use a like and/or send button. Just make sure to include Open Graph metadata in your page.
https://developers.facebook.com/docs/reference/plugins/send/
Be aware that you should also use an app (id) with the like or send button.