在两个不同的目录中具有相同的控制器名称 [英] Same controller name in two different directories

问题描述

From'Agile Web Development with Rails 4'pag.272。

From 'Agile Web Development with Rails 4' pag.272.

如果传入请求有
a controller named say）admin / book，Rails将在目录app / controllers / admin中查找名为
book_controller的控制器。也就是说，
控制器名称的最后部分将总是解析为一个名为name_controller.rb的文件，任何
引导路径信息将用于浏览子目录，
从应用程序开始/ controllers目录。

If an incoming request has a controller named (say) admin/book, Rails will look for the controller called book_controller in the directory app/controllers/admin. That is, the final part of the controller name will always resolve to a file called name_controller.rb, and any leading path information will be used to navigate through subdirectories, starting in the app/controllers directory.

想象一下，我们的程序有两个这样的控制器组（比如admin / xxx
和content / xxx）书控制器。在
app / controllers的管理和内容子目录中有一个名为book_controller.rb的
文件。这两个控制器文件将定义一个名为BookController的类。如果Rails没有采取进一步的措施，这两个类会发生冲突。
为了解决这个问题，Rails假定
目录app / controllers的子目录中的控制器是以子目录命名的Ruby模块。

Imagine that our program has two such groups of controllers (say, admin/xxx and content/xxx) and that both groups define a book controller. There’d be a file called book_controller.rb in both the admin and content subdirectories of app/controllers. Both of these controller files would define a class named BookController. If Rails took no further steps, these two classes would clash. To deal with this, Rails assumes that controllers in subdirectories of the directory app/controllers are in Ruby modules named after the subdirectory.

我的问题是：两个book_controller.rb文件如何冲突？

我有两个不同的URL：.... / admin / book和.... / content /书，他们怎么能冲突？在上一段中，它明确表示

My question is: how could the two book_controller.rb files clash?
I have two different URLs: ..../admin/book and ..../content/book, how can they clash? In the previous paragraph it explicit says

[..]任何前导路径信息将用于浏览子目录，从应用程序/控制器目录

[..] any leading path information will be used to navigate through subdirectories, starting in the app/controllers directory

推荐答案

文件名称无关紧要。

有两个相同名称的文件完全可以，例如 controllers / admin / books_controller.rb 和 controllers / books_controller.rb 。

It's totally okay to have two files with identical names, like controllers/admin/books_controller.rb, and controllers/books_controller.rb.

但是，不同。您可以添加命名空间以区分它们。例如

However, the class names inside those controller should be different. You can add namespace to differentiate them. For example

class Admin::BooksController

class BooksController

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