'integer', 'status' => 'integer', 'shift_date' => 'date', 'confirmed_at' => 'datetime', ]; } public function handoverUser(): BelongsTo { return $this->belongsTo(User::class, 'handover_user_id'); } public function receiverUser(): BelongsTo { return $this->belongsTo(User::class, 'receiver_user_id'); } }