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Ruby On Rails Interview Questions and Answers

Ques. What is the purpose of Environment.RB and Application.RB in Ruby on Rails?

There are two files where variables and configuration settings are stored. 

- config/environment.rb : Environment settings go here

- config/application.rb : Application level global settings go here

config.time_zone = 'Central Time (US & Canada)'
config.i18n.default_locale = :de
config.filter_parameters += [:password] # ensures that passwords are not logged

The same file is also used for configuring various environment settings such as:

config.action_mailer.smtp_settings # various email settings go here 

What is the purpose of config/environments/development.rb file?

You would specify various config settings the development environment in this file.

 config.action_controller.perform_caching = false # to enable caching

This is because you typically do not want to enable caching in the development environment. 

The same config setting in the production environment would be equal to true. 

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