<?php

DemonstrationController
{
    public function createPost()
    {
        // validate request, create the post, and...

        $member = Auth::user()->member();
        $member->incrementPostCount();
    }

    public function deletePost()
    {
        // validate request, delete the post, and...

        $member = Auth::user()->member();
        $member->decrementPostCount();
    }
}