[RUBY] [Beginner] Environment variable setting -dotenv-rails-

What are environment variables?

Environment variables are like boxes that hold information that can't be uploaded to Github. As a result, you do not have to write the password directly in the application. By passing data from the OS, you can run the application without worrying about information leakage.

Setting method

gem installation


gem 'dotenv-rails'
$ bundle install
Create .env file

In the root directory where the Gemfile is located Create an .env file

Creating environment variables
KEY='*******' #Enter the key and password you want to use

When calling


You can call it.

Excluded from Git control



If you forget this, information will be leaked, so be sure to set it.

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