Create a new Ruby on Rails application using MySQL instead of SQLite

I want to create my Rails application with MySQL, because I like it so much. How can I do that in the latest version of Rails instead of the default SQLite?

Normally, you would create a new Rails app using

rails ProjectName

To use MySQL, use

rails new ProjectName -d mysql

If you already have a rails project, change the adapter in the config/database.yml file to mysql and make sure you specify a valid username and password, and optionally, a socket:

development:
  adapter: mysql2
  database: db_name_dev
  username: koploper
  password:
  host: localhost
  socket: /tmp/mysql.sock

Next, make sure you edit your Gemfile to include the mysql2 or activerecord-jdbcmysql-adapter (if using jruby).

For Rails 3 you can use this command to create a new project using mysql:

$ rails new projectname -d mysql

Go to the terminal and write:

rails new <project_name> -d mysql

Create a new Ruby on Rails application using MySQL instead of SQLite

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