无法在cmd行Ruby on Rails中生成模型

Question

I just started learning ruby on rails today. I am following the book Rails For PHP Developers. Anyhow, when I type rails g model Subscribers the next line says "invoke active record". I had no trouble creating a controller from the cmd line, so how come my model is not generating. Which means the model file is not being created in models directory.

Answer 1

You need to add the mysql2 gem to your gemfile. Then run bundle install and try it again.

When learning rails and on your local machine it's best to stay with the defaul SQLite database. You must have changed the config/database.yml to use MySQL for your development environment and that requires you to have the MySQL adapter installed.

Note: Use the mysql2 gem, not the mysql gem. It'll save you a lot of grief.