public IActionResult LeaveActivity(int activityid)
        {
            User       RetrieveUser       = HttpContext.Session.GetObjectFromJson <User>("LoggedUser");
            ActingUser removeRelationship = dbContext.ActingUsers
                                            .FirstOrDefault(rel => (rel.ActID == activityid && rel.UserID == RetrieveUser.UserID));

            dbContext.ActingUsers.Remove(removeRelationship);
            dbContext.SaveChanges();
            return(RedirectToAction("Dashboard"));
        }
        public IActionResult JoinActivity(int activityid)
        {
            User       RetrieveUser    = HttpContext.Session.GetObjectFromJson <User>("LoggedUser");
            ActingUser newRelationship = new ActingUser();

            newRelationship.ActID  = activityid;
            newRelationship.UserID = RetrieveUser.UserID;
            dbContext.Add(newRelationship);
            dbContext.SaveChanges();
            return(RedirectToAction("Dashboard"));
        }