Laravel 5: find the page number of an entry

I'm working on a custom forum and when a post is added to a thread I have to notify the subscribed users. In the message I have to place the link for the user to go straight to the post. Something like this:

/forum/discussion/1/ateliers-et-expositions?page=2#forum-message-3

To be able to do that I need to know the page number of the entry. Does this feature exist on Laravel already? I couldn't find it in their docs and I know about features that exist but are not in their docs, so maybe it's there already and I'm just not aware of it.

I would like to avoid making a select in the database a loop through it to find the page number, if possible.

via Chebli Mohamed