Question

我在rails中很新，我想问一下不同数据库的请求来源。

类似的东西：

http://localhost:80     env: production    database: production
http://localhost:8080   env: development   database: development
http://localhost:8081   env: test          database: test

我已经定义了三个环境。我只想切换！

根据this post，在我的application.rb中，我可以适应

Rails.env = ActiveSupport::StringInquirer.new('production')

到

# application.rb
if request.headers['HTTP_ORIGIN'] == 'http://localhost:80'
    Rails.env = ActiveSupport::StringInquirer.new('production')
elsif request.headers['HTTP_ORIGIN'] == 'http://localhost:8080'
    Rails.env = ActiveSupport::StringInquirer.new('development')
elsif request.headers['HTTP_ORIGIN'] == 'http://localhost:8081'
    Rails.env = ActiveSupport::StringInquirer.new('test')

但似乎我无法访问方法headers：

C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing': undefined method `request' for #<App::Application:0x3e9c088> (NoMethodError)
    from C:/Sites/KML-backend/config/application.rb:88:in `<class:Application>'
    from C:/Sites/KML-backend/config/application.rb:26:in `<module:App>'
    from C:/Sites/KML-backend/config/application.rb:25:in `<top (required)>'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:53:in `require'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:53:in `block in <top (required)>'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:50:in `tap'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

Answer 1

我真的不明白你为什么要这样做，但是如何启动三台服务器呢？

RAILS_ENV="production" rails s -p 80
RAILS_ENV="development" rails s -p 8080
RAILS_ENV="test" rails s -p 8081

更改有关请求标头的rails环境

1 个答案: