如何从 Ruby on Rails 的控制台调用控制器/视图助手方法? [英] How can I call controller/view helper methods from the console in Ruby on Rails?

问题描述

当我加载 script/console 时，有时我想使用控制器或视图助手方法的输出.

有没有办法:

• 模拟请求?
• 根据所述请求从控制器实例调用方法?
• 测试辅助方法，通过所述控制器实例还是其他方式?

解决方案

要调用助手，请使用 helper 对象:

$ ./script/console>>helper.number_to_currency('123.45')=>123,45 雷亚尔"

如果您想使用默认情况下未包含的帮助程序(例如，因为您从 ApplicationController 中删除了 helper :all)，只需包含该帮助程序.

<代码>>>包括 BogusHelper>>帮手=>虚假输出"

至于处理控制器，我引用尼克的回答:

<块引用>

>app.get '/posts/1'>响应 = app.response# 你现在有一个很像集成测试的 rails 响应对象>response.body # 获取 HTML>response.cookies # cookie 的哈希值# 等等等等

When I load script/console, sometimes I want to play with the output of a controller or a view helper method.

Are there ways to:

• simulate a request?
• call methods from a controller instance on said request?
• test helper methods, either via said controller instance or another way?

解决方案

To call helpers, use the helper object:

$ ./script/console
>> helper.number_to_currency('123.45')
=> "R$ 123,45"

If you want to use a helper that's not included by default (say, because you removed helper :all from ApplicationController), just include the helper.

>> include BogusHelper
>> helper.bogus
=> "bogus output"

As for dealing with controllers, I quote Nick's answer:

> app.get '/posts/1'
> response = app.response
# you now have a rails response object much like the integration tests

> response.body            # get you the HTML
> response.cookies         # hash of the cookies

# etc, etc

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