public function getDaysLeftAttribute() { $daysleft = 0; if ($this->goal()->orderBy('start')->first()) { $firstGoal = $this->goal()->orderBy('start')->first()->start; $start = new \Carbon\Carbon($firstGoal); $now = \Carbon\Carbon::now(); if ($start->diff($now)->days >= 1) { $daysleft = $start->diff($now)->days; } } return $daysleft; }