Config Rails 3.0 without Database

最新推荐文章于 2025-10-21 22:09:11 发布

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#rails #database #activerecord #action #application #command

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本文介绍如何在Ruby on Rails 3.0中移除ActiveRecord，实现不需要数据库配置的应用程序。主要内容包括：使用命令行选项跳过ActiveRecord的加载、修改config/application.rb文件中的依赖项以及在Gemfile中移除数据库相关gem。

Sometimes we maybe just need some simple work with rails, database configuration is optional. We can just config rails without db config.

These following can be applied to rails 3.0.

original link, http://stackoverflow.com/questions/2212709/remove-activerecord-in-rails-3-beta

I'm going by this from reading the source, so let me know if it actually worked. :)

The rails command that generates the application template now has an option -O , which tells it to skip ActiveRecord.

If you don't feel like rerunning rails , you should check the following in your existing app:

Check that your config/application.rb doesn't have require 'rails/all' or require "active_record/railtie" . Instead, for a standard Rails setup without ActiveRecord, it should have only the following requires:

require
 
File
.
expand_path
(
'../boot'
,
 __FILE__
)







require
 
"action_controller/railtie"



require
 
"action_mailer/railtie"



require
 
"active_resource/railtie"



require
 
"rails/test_unit/railtie"







# Auto-require default libraries and those for the current Rails environment. 



Bundler
.
require
 
:
default
,
 
Rails
.
env

If, in config/application.rb , you are using the config.generators section, make sure it doesn't have the line g.orm :active_record . You can set this explicitly to nil , if you want, but this should be the default when g.orm is completely omitted.
Optional, but in your Gemfile , remove the gem line that loads the module for your database. This could be the line gem "mysql" for example.