Rails应用程序设置? [英] Rails application settings?

问题描述

我正在使用具有用户身份验证并提供管理员帐户的Rails应用程序.在管理员帐户中，我创建了一个用于站点范围设置的页面.

I am working on a Rails application that has user authentication which provides an administrators account. Within the administrators account I have made a page for sitewide settings.

我想知道创建这些设置的规范是什么.举例来说，我希望其中一项设置是更改应用程序名称的名称，或更改标题的颜色.

I was wondering what the norm is for creating these settings. Say for example I would like one of the settings to be to change the name of the application name, or change a colour of the header.

我正在寻找的是让某人解释基本过程/方法-不一定是特定的代码-尽管那会很棒！

What I am looking for is for someone to explain the basic process/method - not necessarily specific code - although that would be great!

推荐答案

对于不需要存储在数据库表中的常规应用程序配置，我想在 config 目录.对于您的示例，它可能看起来像这样:

For general application configuration that doesn't need to be stored in a database table, I like to create a config.yml file within the config directory. For your example, it might look like this:

defaults: &defaults
  app_title: My Awesome App
  header_colour: #fff

development:
  <<: *defaults

test:
  <<: *defaults
  app_title: My Awesome App (TEST ENV)

production:
  <<: *defaults

此配置文件从 config/initializers 中的自定义初始化程序加载:

This configuration file gets loaded from a custom initializer in config/initializers:

Rails 2.x:

Rails 2.x:

APP_CONFIG = YAML.load_file("#{RAILS_ROOT}/config/config.yml")[RAILS_ENV]

Rails 3.x:

Rails 3.x:

APP_CONFIG = YAML.load_file("#{Rails.root}/config/config.yml")[Rails.env]

然后您可以使用以下方法检索值:

You can then retrieve the value using:

title = APP_CONFIG['app_title']

有关详细信息，请参见此Railscast .

See this Railscast for full details.

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