public function getAttributes($entity)
    {
        if ($entity->has($this->idField)) {
            $hidden = array_merge($entity->getHidden(), [$this->idField]);
            $entity->setHidden($hidden);
        }

        $attributes = $entity->toArray();

        // remove associated data so it won't appear inside jsonapi `attributes`
        foreach ($this->_repository->associations() as $association) {
            $propertyName = $association->getProperty();

            if ($association->type() === Association::MANY_TO_ONE) {
                $foreignKey = $association->getForeignKey();
                unset($attributes[$foreignKey]);
            }

            unset($attributes[$propertyName]);
        }

        // dasherize attribute keys (like `created_by`) if need be
        if ($this->_view->viewVars['_inflect'] === 'dasherize') {
            foreach ($attributes as $key => $value) {
                $dasherizedKey = Inflector::dasherize($key);

                if (!array_key_exists($dasherizedKey, $attributes)) {
                    $attributes[$dasherizedKey] = $value;
                    unset($attributes[$key]);
                }
            }
        }

        return $attributes;
    }