把代码片段放在 Rails 的什么地方? [英] Where to put code snippets in Rails?

问题描述

我有这个为 POST 生成签名的代码片段.它的细节并不重要，但我想知道的是:由于它不是与模型相关的代码块，因此它确实可以在任何地方使用:在控制器中，在模型中，在视图助手中；即使在视图中.所以我不确定在哪里，甚至更大的问题，一旦我把它放在某个位置，如何激活它的使用.

I have this code snippets that generates a signature for POSTs. The detail of it is not important, but what I want to know is: since it is not a model-related chunk of code, it really can be use anywhere: in controllers, in models, in view helpers; even in views. So I am unsure where and, even bigger of a problem, how to activate the use of it once I place it in some location.

这就是那些要求"语句的全部内容吗?您可以通过您正在处理的当前文件中的require"语句获得一些功能吗?

Is it what those "require" statements are all about? That you can acquire some functionality through a "require" statement in the current file you are working on?

为了让我们有一个例子来讨论，比如说，我有一小段代码可以做立方:

Just so that we have an example to talk about, say, I have a little snippet of code that does cubing:

def cube_it(num)
  num**3
end

我知道我会在整个应用程序的不同地方使用它，那么我应该把它放在哪里?当我确实需要使用它时，我如何召唤"它?

I know that I will be using it in various places across the application, so where should I put it? and when I do need to use it, how can I "summon" it?

谢谢

推荐答案

Rails 在第一次使用时会自动加载模块和类.您可以将函数放入模块(或类)并将文件放入应用程序的 lib 目录中.require 语句在 Rails 应用中不经常使用.

Rails autoloads modules and classes when they are first used. You can put your function into a module (or class) and put the file into the lib directory in your application. require statements aren't used in Rails apps often.

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