Configuring the environment name in Rails (#356)

* Bumping rails versions to fix build issues locally

* Added a new config option called 'environment', which allows you to overide the default config environment which is the Rails.env. This allows us to have multiple different environments, without having to worry about making custom rails environments

---------

Co-authored-by: Neil Williams <[email protected]>
Co-authored-by: Chris LaRose <[email protected]>

README.md

@@ -53,6 +53,8 @@ which will generate customizable config file `config/initializers/config.rb` and
 
 You can now edit them to adjust to your needs.
 
+> Note: By default, the config environment will match the Rails environment (`Rails.env`). This can be changed by setting `config.environment`.
+
 ### Installing on Padrino
 
 Add the gem to your `Gemfile` and run `bundle install` to install it. Then edit `app.rb` and register `Config`

lib/config.rb

@@ -27,7 +27,8 @@ module Config
     overwrite_arrays: true,
     merge_hash_arrays: false,
     validation_contract: nil,
-    evaluate_erb_in_yaml: true
+    evaluate_erb_in_yaml: true,
+    environment: nil
   )
 
   def self.setup

lib/config/integrations/rails/railtie.rb

@@ -9,7 +9,7 @@ def preload
 
           # Parse the settings before any of the initializers
           Config.load_and_set_settings(
-            Config.setting_files(::Rails.root.join('config'), ::Rails.env)
+            Config.setting_files(::Rails.root.join('config'), Config.environment.nil? ? ::Rails.env : Config.environment.to_sym)
           )
         end
 

lib/generators/config/templates/config.rb

@@ -15,6 +15,11 @@
   #
   # config.overwrite_arrays = true
 
+  # Defines current environment, affecting which settings file will be loaded.
+  # Default: `Rails.env`
+  #
+  # config.environment = ENV.fetch('ENVIRONMENT', :development)
+
   # Load environment variables from the `ENV` object and override any settings defined in files.
   #
   # config.use_env = false