/**
* 添加一个可被引入的项.
*
* @param Includable $includable
*
* @throws Exception
*/
public function add(Includable $includable)
{
if ($includable->isNested()) {
$parent_includable = $this->getIncludable($includable->getParentName());
if (null === $parent_includable) {
throw new Exception('You must define includable ' . $includable->getParentName());
}
$parent_includable->addChildren($includable);
}
$this->available_includes[$includable->getName()] = $includable;
$this->foreign_keys[$includable->getName()] = $includable->getForeignKey();
}
/**
* 使用 user_id 字段引入关联的用户.
*
* @param $default_columns
*/
public function includeUser($default_columns)
{
$available_include = Includable::make('user')->setDefaultColumns($default_columns)->setAllowColumns(User::$includable)->setForeignKey('user_id');
app(IncludeManager::class)->add($available_include);
}
/**
* 引入帖子每个的评论发布者.
*
* @param $default_columns
*/
public function includeRepliesUser($default_columns)
{
$available_include = Includable::make('replies.user')->setDefaultColumns($default_columns)->setAllowColumns(User::$includable)->nested('replies');
app(IncludeManager::class)->add($available_include);
}
/**
* 使用 user_id 字段引入关联的用户.
*
* @param $default_columns
*/
public function includeTopic($default_columns)
{
$available_include = Includable::make('topic')->setDefaultColumns($default_columns)->setAllowColumns(User::$includable)->withTrashed()->setForeignKey('topic_id');
app(IncludeManager::class)->add($available_include);
}