メソッドのコードは次のとおりAuth::user()
です。
// vendor/laravel/framework/src/Illuminate/Auth/Guard.php
/**
* Get the currently authenticated user.
*
* @return \Illuminate\Auth\UserInterface|null
*/
public function user()
{
if ($this->loggedOut) return;
// If we have already retrieved the user for the current request we can just
// return it back immediately. We do not want to pull the user data every
// request into the method becaue that would tremendously slow the app.
if ( ! is_null($this->user))
{
return $this->user;
}
$id = $this->session->get($this->getName());
// First we will try to load the user using the identifier in the session if
// one exists. Otherwise we will check for a "remember me" cookie in this
// request, and if one exists, attempt to retrieve the user using that.
$user = null;
if ( ! is_null($id))
{
$user = $this->provider->retrieveByID($id);
}
// If the user is null, but we decrypt a "recaller" cookie we can attempt to
// pull the user data on that cookie which serves as a remember cookie on
// the application. Once we have a user we can return it to the caller.
$recaller = $this->getRecaller();
if (is_null($user) and ! is_null($recaller))
{
$user = $this->provider->retrieveByID($recaller);
}
return $this->user = $user;
}
私には、リクエストごとに1回だけデータベースからユーザーを取得するように見えます。そのため、何度でも呼び出すことができます。DB にヒットするのは 1 回だけです。