[RUBY] [Environment variables] What are rails environment variables?


Use environment variables to embed information in your application


■ Information that you do not want to leak can be used in the application ■ Improved security ■ Can be used for various APIs

【Development environment】

■ Mac OS catalina ■ Ruby on Rails ( ■ Virtual Box:6.1 ■ Vagrant: 2.2.7


Install gem'dotenv-rails'


gem 'dotenv-rails'


bundle install

Create ".env" directly under the app

Write in .env

In the application.env

#google omniauth 2.For 0

#Deployment settings

#Mail function implementation

that's all After that, increase the code depending on the service or application you want to use.

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