在Heroku上运行Rails时，如何获得应用程序名称？ [英] How do you get the app name when running Rails on Heroku?

问题描述

这意味着app-name.heroku.com。

请注意，这与 Rails.application.class.parent_name $ b

Rails.application.class.parent_name 在应用程序中定义。

在Rails 3中工作

解决方案

Heroku实际上在环境中设置了一个URL变量默认

  app_name = ENV ['URL']。split（。）。first 
  

引用此处： http://devcenter.heroku.com/articles/config-vars 和 http://ididitmyway.heroku.com/past/2010/11/9/sinatra_settings_and_configuration/

更新：实际上，默认情况下，URL变量可能不存在，但您可以始终先添加环境变量app name，un更少的是你试图避免这种方法在一起。

更新2：确实，另一个显而易见的限制方法是抓取该域关闭请求变量，但是这限制了你的控制器。 http://guides.rubyonrails.org/action_controller_overview.html#the-request-object

This means app-name.heroku.com.

Note this is different from Rails.application.class.parent_name.

Rails.application.class.parent_name is defined in the application.

Working in Rails 3.

解决方案

Heroku actually sets a URL variable in the environment by default

app_name = ENV['URL'].split(".").first

Referenced here: http://devcenter.heroku.com/articles/config-vars and http://ididitmyway.heroku.com/past/2010/11/9/sinatra_settings_and_configuration/

update: actually the URL variable might not be there by default, but you could always add an environment variable "app name" a priori, unless you were trying to avoid that approach all together.

update 2: indeed, the other, obvious but limiting approach, would be to grab the domain off the request variable, but this limits you to your controller. http://guides.rubyonrails.org/action_controller_overview.html#the-request-object

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