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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176
7
章 よくある問題と解決策
7.10.4
メディエーター
メディエーターとは、複数のオブジェクト間でインタラクション（ロジックやふるまい）を協調
させるための仕組みです。他のオブジェクトによるアクションやインタラクションあるいは外部か
らの入力に基づいて、オブジェクトの呼び出しをいつ行うべきか判断します。
7.10.4.1
Backbone.js
用のメディエーター
他の
MV*
フレームワークの多くと異なり、
Backbone.js
にはメディエーターの考え方は取り入
れられていません。しかし、自分でメディエーターを作成することはもちろん可能です。例えば以
下のようなコードを書いてみましょう。
var mediator = {};
これは単なるオブジェクトリテラルにすぎませんが、ここでは意味についての議論が目的です。
メディエーターはオブジェクト間のワークフローを制御するためのものであり、オブジェクトリテ
ラル
1
つでも十分です。
var orgChart = {
addNewEmployee: function() {
//
インタラクションの対象となるビューを取得します
var employeeDetail = this.getEmployeeDetail();
//
従業員のデータの取得が完了したら、メディエーター（
orgchart
//
オブジェクト）は次に行うべき処理を決定します
employeeDetail.on("complete", function(employee) {
// ...
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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.
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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.