*/ public function event(): BelongsTo { return $this->belongsTo(CalendarEvent::class, 'calendar_event_id'); } /** * @return BelongsTo */ public function smsCampaign(): BelongsTo { return $this->belongsTo(SmsCampaign::class); } protected function casts(): array { return [ 'remind_at' => 'datetime', 'sent_at' => 'datetime', ]; } }