ruby-on-rails - 如何使用 mysql2 gem 配置 ActiveRecord 数据库连接

Question

大家好 在使用 ActiveRecord 和 'mysql2' gem 时遇到问题。我正在使用 rails 4.0.4 我的 config/application.rb 中有这些行

# Pick the frameworks you want: 
require "active_record/railtie"
require "action_controller/railtie"
require "action_mailer/railtie"
require "sprockets/railtie"
# require "rails/test_unit/railtie"

当我尝试运行“rails g model user”时，我得到了

 invoke  active_record
 /Users/edjasper/.rvm/gems/ruby-2.1.1/gems/railties4.0.4/lib/rails/application/configuration.rb:110:in `database_configuration': Could not load database configuration. No such file - /Users/edjasper/Desktop/associations_challenge_8/config/database.yml (RuntimeError

有什么建议吗？

Answer 1

是的，您的配置目录中没有 database.yml 好像

development:
  adapter: mysql2
  encoding: utf8
  database: my_db_name
  username: root
  password: my_password
  host: 127.0.0.1
  port: 3306
  secure_auth: false

此外，您的示例配置目录中应该已经有 database.yml.example

顺便说一句，错误信息已经告诉你了:)

No such file - /Users/edjasper/Desktop/associations_challenge_8/config/database.yml