February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
Content preview from Nodeクックブック
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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.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.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.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.
226
6 章 Express で開発をスピードアップ
ローカル変数
リクエストヘッダやデータから取得された情報や、
login
ミドルウェアがログイン情報を評価し
た結果などをレスポンスに含めてユーザに返したい場合、それらの情報を
res.locals
オブジェク
トに格納して、テンプレートで使用できる変数として渡すことができます
†
。
res.render
の
2
つ目のパラメータに渡すオブジェクトも
res.locals
と同様に動作するので、こ
ちらに変数を直接渡して動作させることもできます。
profiler
アプリケーションのように、
res.
locals
を使用するルートが
1
つしか存在しない場合は、この方法でも問題はありませんが、ルー
ト構成が複雑になると、
res.locals
を利用して、テンプレートに渡す変数を集約管理しておく必
要が生じます。
リクエストやセッションに依存しないアプリケーション全体の情報をテンプレートに渡すとき
は、
app.locals
オブジェクトに同様に変数を格納することができます。
スタイル
profiler
アプリケーションでは
Stylus
を使って
CSS
を生成しています。
profiler
と
login
の
各アプリケーションに
Stylus
ファイルが存在しますが、これらの関連性は次の図のとおりです。
†
訳注：
Express 2.x
までは
Helper
を使って値の受け渡しを行っていましたが、
Helper
は
Express 3
で削除されました。
profiler
login
public/stylesheets/style.css ...
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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.