direnv (linux)

Nice to meet you

nice to meet you all. It is kyon who finally solved the problem today and gave a scream. I will post it for the first time as a memorandum. Thank you very much.


CentOS Linux release 8.1.1911 (Core) mysql Ver 8.0.17 for Linux on x86_64 (Source distribution) Visual Studio Code version: 1.43.1


As you can see in the title, I want to use direnv on linux, so please refer to the URL below. Reference URL Use direnv on Linux I was able to create an .envrc file and pass the path to the Rails project's / bin directory, but I've been fighting this guy ever since.

Access denied for user 'ENV['MYSQL_DATABASE']'@'localhost' (using password: YES)

I think I fought for about a week. I knew that I should write the password directly in database.yml if I looked it up, but after thinking about the future, I decided to use direnv. But I just don't understand. ..


export 'DATABASE_USERNAME'="root"
export 'DATABASE_PASSWORD'="password"← mysql password



default: &default
  adapter: mysql2
  encoding: utf8mb4
  password: ENV['DATABASE_PASSW0RD']


However, as I looked it up, I thought that the .envrc file would fit, and I wasn't sure how to write the username and password in database.yml.

Suddenly various ways to manage database.yml It means that we arrived at this URL and solved the problem.

problem solving

database.in yml<%= ... %>You can embed Ruby code with.

And I wrote database.yml as follows.


default: &default
  adapter: mysql2
  encoding: utf8mb4
  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
  username: <%= ENV['DATABASE_USERNAME'] %>
  password: <%= ENV['DATABASE_PASSWORD'] %>

You didn't embed it. It's embarrassing.

It's a bad sentence, but thank you for reading to the end. I would like to take this opportunity to post. It was kyon.

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