ruby on rails connection two database

最新推荐文章于 2025-12-05 12:37:18 发布

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本文介绍了一个使用Ruby on Rails连接多个数据库的方法，并展示了如何为不同环境（如开发、生产及测试）配置Mongoid来实现这一目标。通过具体的YAML配置文件示例，读者可以了解到如何设置不同的会话、数据库名称、主机地址及其选项。

reference:
[url]http://geekhmer.github.io/blog/2015/02/07/ruby-on-rails-connect-to-multiple-databases-and-migrations/[/url]

config/mongoid.yml


db1:
    development:
      sessions:
        default:
          database: my_person_development
          hosts:
            - localhost:27017
          options:
      options:
    production:
      sessions:
        default:
          database: my_person_production
          hosts:
            - localhost:27017
          options:
      options:
    test:
      sessions:
        default:
          database: my_person_test
          hosts:
            - localhost:27017
          options:
            read: primary
            max_retries: 1
            retry_interval: 0
db2:
    development:
      sessions:
        default:
          database: my_person_development
          hosts:
            - localhost:27017
          options:
      options:
    production:
      sessions:
        default:
          database: my_person_production
          hosts:
            - localhost:27017
          options:
      options:
    test:
      sessions:
        default:
          database: my_person_test
          hosts:
            - localhost:27017
          options:
            read: primary
            max_retries: 1
            retry_interval: 0

config/application.rb


    db_conf = YAML::load(File.open('config/mongoid.yml'))

    db1_conf = db_conf["db1"][Rails.env]
    db2_conf = db_conf["db2"][Rails.env]
    puts ENV
    puts db_conf
    puts "Hello World!!!!!!!!"
    puts db1_conf

rails s -b 0.0.0.0 --environment=production