如何在Rails中访问初始化器文件中的变量

rails -v 2.3.5 devise --version 1.0.8 devise_rpx_connectable --version 0.1.3

config.rpx_auto_create_account = true # false if you don\'t want to create users automaticaly. True by default. 
config.rpx_additional_user_data = [:verifiedEmail, :url, :providerName,:photo] # default [], get some extra profile info from RPXnow, default only a few fields are available in the rpx_user object (https://rpxnow.com/docs#profile_data) 
config.rpx_extended_user_data = true # false by default, extended data only available for Plus and Pro RPX users (https://rpxnow.com/docs#api_auth_info)