public IActionResult UnjoinActivity(int ActivityId)
{
JoinActivity RemoveJoin = _context.JoinActivities.SingleOrDefault(x => x.ActivityId == ActivityId && x.UserId == (int)HttpContext.Session.GetInt32("id"));
_context.JoinActivities.Remove(RemoveJoin);
_context.SaveChanges();
return(RedirectToAction("Dashboard"));
}
public IActionResult joinActivity(int ActivityId)
{
JoinActivity addJoin = new JoinActivity
{
UserId = (int)HttpContext.Session.GetInt32("id"),
ActivityId = ActivityId
};
_context.JoinActivities.Add(addJoin);
_context.SaveChanges();
return(RedirectToAction("Dashboard"));
}