February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
Content preview from Nodeクックブック
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199
レシピ 6.6 Express によるセッション管理［応用］
index
ルートはデフォルトの状態からの変更はほとんどありません。
res.render
のオプション
に
user
プロパティを設定して、
req.session.user
を渡します。
login.jade
はこの情報を受け取って、
user
変数をチェックします。
user
変数が設定されている
場合は、
login.jade
はログインユーザに挨拶（「○○さん、こんにちは！」）を行い、その横にロ
グアウトリンクを設置します。ログアウトリンクをクリックすると、
hidden
属性の
_method
の値
に設定された
DELETE
が
POST
リクエストのデータとして送信されます。サーバがこのリクエスト
を受け取ると、
app.js
に記述している
app.del
を実行します。
logout
ルートでは、
req.session
オブジェクトから
user
オブジェクトを削除し、
next
メソッド
を呼んで
routes.index
に処理を引き継がせます。この時点で
req.session.user
には値が設定さ
れていないため、
res.render
に渡した
user
オブジェクトの中身は
undefined
となります。この値
を
login.jade
が受け取ると、ログインする前と同じくログインフォームを表示します。
関連するレシピ
●
「レシピ
6.3
ダイナミック
URL
ルーティング」
●
「レシピ
6.4
テンプレート（
Jade
）」
●
「レシピ
6.7
Express
で
Web
アプリケーションを構築する」 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.