Rails自带了development、test和production三个environments 我们可以添加Staging
database.yml
staging: adapter: mysql database: store_staging user: root password: host: localhost
添加enviromnets/staging.rb
# ... config.log_level = :debug # ...
创建数据库
mysqladmin create store_staging -u root -p rake db:migrate RAILS_EVN=staging
启动
rails s -e staging