'integer', 'size_in_bytes' => 'integer', 'is_active' => 'boolean', 'created_by' => 'integer', 'updated_by' => 'integer', ]; public function creator() { return $this->belongsTo(User::class, 'created_by'); } public function updater() { return $this->belongsTo(User::class, 'updated_by'); } }