February 2014
Intermediate to advanced
372 pages
7h
Japanese
Content preview from Backbone.jsアプリケーション開発ガイド
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A.2
MVP
327
A.2.1
モデル、ビュー、プレゼンター
MVP
の
P
は
Presenter
（プレゼンター）を表します。このコンポーネントには、ビューのユー
ザーインタフェースにかかわるビジネスロジックが記述されます。
MVC
とは異なり、ビューから
の呼び出しはプレゼンターに委譲されます。ビューとプレゼンターとの間は疎結合であり、イン
タフェースを通じてコミュニケーションが行われます。これによって、ユニットテスト用に仮の
ビューを用意できるなどのさまざまなメリットを得られます。
MVP
の実装形態の中で最も多く見られるのは、ロジックをほとんど持たないパッシブ（受動的）
ビューと呼ばれるビューを利用するというものです。パッシブビューは無知です。モデルの役割は
MVC
と
MVP
でほぼ共通であり、いずれもアプリケーションのデータを扱います。プレゼンター
はビューとモデルの仲介者として、互いに隔離されている両者を協調させる役割を持ちます。これ
は実質的に、モデルからビューへの関連付けを意味します。
MVC
ではコントローラがこの役割を
受け持っています。プレゼンターは
MVP
パターンの中で中心的な役割を担っており、ビューの背
後にあるプレゼンテーションロジックも（名前のとおり）プレゼンターが保持しています。
ビューからの要求に応じ、プレゼンターはユーザーの操作を扱う処理をすべて受け持ち、処理
結果としてデータを返します。この意味では、プレゼンターはデータを取得して処理し、ビュー上
でのデータの表示方法を決定していると言えます。実装に ...
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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.