public async Task <IActionResult> UnregisterActivity(int id)
{
var signedUp = _allReadyDataAccess.GetActivitySignup(id, User.GetUserId());
if (signedUp == null)
{
return(HttpNotFound());
}
await _allReadyDataAccess.DeleteActivitySignupAsync(signedUp.Id);
return(new HttpStatusCodeResult((int)HttpStatusCode.OK));
}