$this->id, 'group_id' => $this->group_id, 'activity_id' => $this->activity_id, 'activity_name' => $this->activity->name, 'subactivity_id' => $this->subactivity_id, 'subactivity_name' => $this->subactivity?->name, 'human_date' => $this->from->format('d.m.Y'), 'promised_at' => $this->promised_at?->format('Y-m-d'), 'is_active' => $this->isActive(), ]; } }