Rails：简单的路由问题
这应该相当容易。我正在学习一个相当过时的视频课程，但我还是想弄清楚这一点：
我创建了一个名为“Say”的控制器，它又创建了一个 say_controller.rb。在里面，我创建了一个名为“hello”的新方法，因此 say_controller 的内部如下所示：
class SayController < ApplicationController
def hello
respond_to do |format|
format.html # index.html.erb
format.xml { render :xml => @derps }
end
end
end
然后，我在 /app/view/say/ 下创建了一个 hello.html.erb，其中包含一些 html。如果您尝试通过 localhost:3000/say/hello 访问它，则会出现路由错误。所以我将其添加到routes.rb中：
match 'say/hello' => 'say#hello'
不过，这就是问题 - 如果您运行rails生成脚手架Derp，那么在路线中您将看到
resources:derps
，这是唯一会在那里的东西。如果没有特定的匹配命令，Rails 如何知道路由到它？即我有点明白这里发生了什么，但我想了解这个理论。 更重要的是，我将来在手动创建视图和控制器时需要依赖什么（我什至必须这样做吗？） - Rails 中为每个视图和控制器手动添加一行到 paths.rb 是标准程序吗？视图/控制器？
谢谢:)
This should be fairly easy. I'm following along with a fairly outdated video course as it seems like but I'd like to figure this out nonetheless:
I created a controller called "Say," which in turn created a say_controller.rb. Inside there, I created a new method called 'hello,' so the inside of say_controller looks like this:
class SayController < ApplicationController
def hello
respond_to do |format|
format.html # index.html.erb
format.xml { render :xml => @derps }
end
end
end
Then, I created a hello.html.erb under /app/view/say/ with some html in it. If you try to access it at localhost:3000/say/hello, there's a routing error. So I added this to routes.rb:
match 'say/hello' => 'say#hello'
Here's the question though - if you run rails generate scaffold Derp, then in routes you'll see
resources:derps
and that's the only thing that's gonna be there. How does Rails know to route to it without a specific match command? ie I kinda see what's happening here but I'd like to understand the theory.
More importantly, what do I need to rely on in the future when creating views and controllers by hand (will I even have to do that?) - is it standard procedure in Rails to add a line to routes.rb manually for each and every view/controller?
Merci :)
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resources及其单数变体resource路由说明符实际上同时创建了多个路由，希望能够更轻松地定义应用程序的 URL 呈现方式-明智的。您可以在
rake paths列表中看到生成的路由。其中每一个都可以使用一系列match语句手动指定，但通常这不是一种非常有效的方法。使用资源的原因是鼓励遵守标准 REST 约定。
The
resourcesand its singular variantresourcerouting specifiers actually create a number of routes at the same time in the hopes of making it a lot easier to define how your application is presented URL-wise.You can see the generated routes in the
rake routeslisting. Each of these could be specified manually with a series ofmatchstatements, but generally that's not a very effective way to do it.The reason for using
resourcesis to encourage conforming to standard REST conventions.