Revert "Merge pull request #21995 from tak1n/master"

This reverts commit 4973704bf56dbb0d8beba977e1053d57e346ebd0, reversing
changes made to 78edeb33346e13ab33a62d2a6b553aabf5b3186a.

1 files changed, 8 insertions, 35 deletions

diff --git a/guides/source/configuring.md b/guides/source/configuring.md
index 7239105b29..c013973d02 100644
--- a/guides/source/configuring.md
+++ b/guides/source/configuring.md
@@ -1217,48 +1217,21 @@ NOTE. If you are running in a multi-threaded environment, there could be a chanc
 Custom configuration
 --------------------
 
-You can configure your own code through the Rails configuration object with custom configuration. It works like this:
+You can configure your own code through the Rails configuration object with custom configuration under the `config.x` property. It works like this:
 
   ```ruby
-  config.payment_processing.schedule = :daily
-  config.payment_processing.retries  = 3
-  config.super_debugger = true
+  config.x.payment_processing.schedule = :daily
+  config.x.payment_processing.retries  = 3
+  config.x.super_debugger = true
   ```
 
 These configuration points are then available through the configuration object:
 
   ```ruby
-  Rails.configuration.payment_processing.schedule # => :daily
-  Rails.configuration.payment_processing.retries  # => 3
-  Rails.configuration.super_debugger              # => true
-  Rails.configuration.super_debugger.not_set      # => nil
-  ```
-
-You can also use `Rails::Application.config_for` to load whole configuration files:
-
-  ```ruby
-  # config/payment.yml:
-  production:
-    environment: production
-    merchant_id: production_merchant_id
-    public_key:  production_public_key
-    private_key: production_private_key
-  development:
-    environment: sandbox
-    merchant_id: development_merchant_id
-    public_key:  development_public_key
-    private_key: development_private_key
-
-  # config/application.rb
-  module MyApp
-    class Application < Rails::Application
-      config.payment = config_for(:payment)
-    end
-  end
-  ```
-
-  ```ruby
-  Rails.configuration.payment['merchant_id'] # => production_merchant_id or development_merchant_id
+  Rails.configuration.x.payment_processing.schedule # => :daily
+  Rails.configuration.x.payment_processing.retries  # => 3
+  Rails.configuration.x.super_debugger              # => true
+  Rails.configuration.x.super_debugger.not_set      # => nil
   ```
 
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