環境

Laravel v9.5.1 (PHP v8.1.3)

状況

Socialiteを使ってGoogleログイン機能を実装し、デプロイ後/auth/google/redirectにアクセスした際下記のエラー。

RuntimeException
Session store not set on request.

api.php

Route::get('auth/google/redirect', function () {
  return Socialite::driver('google')->redirect();
});

Route::get('auth/google/callback', [OAuthController::class, 'authGoogleCallback']);

解決法

web.phpにルーティングを記載する。
Socialiteはセッション認証なのでapi.phpではなくてweb.phpに記載しないと動かない。

web.php

Route::get('auth/google/redirect', function () {
  return Socialite::driver('google')->redirect();
});

Route::get('auth/google/callback', [OAuthController::class, 'authGoogleCallback']);

web.phpとapi.phpの違い

api.phpにはVerifyCsrfTokenミドルウェアがないので動かなかった。

app/Http/Kernel.php

   /**
     * The application's route middleware groups.
     *
     * @var array<string, array<int, class-string|string>>
     */
    protected $middlewareGroups = [
        'web' => [
            \App\Http\Middleware\EncryptCookies::class,
            \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
            \Illuminate\Session\Middleware\StartSession::class,
            // \Illuminate\Session\Middleware\AuthenticateSession::class,
            \Illuminate\View\Middleware\ShareErrorsFromSession::class,
            \App\Http\Middleware\VerifyCsrfToken::class,
            \Illuminate\Routing\Middleware\SubstituteBindings::class,
        ],

        'api' => [
            // \Laravel\Sanctum\Http\Middleware\EnsureFrontendRequestsAreStateful::class,
            'throttle:api',
            \Illuminate\Routing\Middleware\SubstituteBindings::class,
        ],
    ];

参考