February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
Content preview from Nodeクックブック
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202
6 章 Express で開発をスピードアップ
req.app.routes
には、
app.get
、
app.post
、
app.del
などで指定したルートが格納されていま
す。それぞれのルートは、リクエストメソッドタイプごとに分類されて格納されています。例え
ば、
req.app.routes.get
は
GET
メソッドでアクセスできるルートを格納しています。
もしリクエストメソッドタイプに対応するルートが登録されていない場合は、
next
と
return
を呼びます。こうすることにより、定義されていないリクエストメソッドが送信された場合に
Express
に問題の処理を任せます。
各メソッドに登録されているルートは配列形式で格納されています。配列のそれぞれの要素は
オブジェクトで、
path
、
method
、
callbacks
、
keys
、
regexp
などのプロパティを持っています。
login.js
では、
user
プロパティを持った
POST
リクエスト、もしくは
DELETE
リクエストが到
達すると、そのリクエストメソッドに登録されているルートを
forEach
ループで走査し、
URL
の
パス部分が各ルートの
regexp
に格納されている正規表現とマッチするかどうかを確認し、マッチ
しない場合はリクエストメソッドを
GET
に変更します（
if (login || logout)
）。これは、
POST
と
DELETE
リクエストがどの
URL
に対して送信されても
404
を返さないようにするためです。
例えば、
http://localhost:3000/anypage ...
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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.