February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
Content preview from Nodeクックブック
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111
レシピ 4.4 Mongoskin を使って MongoDB に接続する
% node quotes.js "
"
このコマンドを実行すると、すでに入力されているデニス・リッチーの名言が表示されます。
解説
mongoskin
モジュールの
db
メソッドを使って簡単にデータベースに接続し、すぐにコレクショ
ンを取得できるようになりました。
レシピ
4.3
と同様に、
author
と
quote
をコマンドライン引数から取得して
params
オブジェク
トに格納しておきます。
mongodb
モジュールの
insert
メソッドを使って、
author
と
quote
を含
むドキュメントをコレクションに挿入します。
mongodb
モジュールを呼び出していませんが、
mongoskin
モジュールを通して
mongodb
モジュールのメソッドを実行することができます。
次に、
author
が引数に入力されているかどうかをチェックして、
mongoskin
の
findEach
メソッ
ドを使います。
mongodb
モジュールの
collection.find.each
（レシピ
4.3
を参照）と同様の機能を
提供します。
findEach
のコールバック関数では、
doc
で提供される
author
と
quote
をコンソールに出力し、
doc
の提供が終わったら
client.close
で明示的に
client
接続を切断します。
Mongoskin
は
MongoDB
との接続をとてもシンプルにします。ミニレシピでは、
Mongoskin
が提供する他の機能を見てみましょう。 ...
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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.