如何在Rails 4.2中重新生成config/application.rb？

Rails 4.2是否提供了一个在现有应用程序中重新生成config/application.rb的命令？如何在Rails 4.2中重新生成config/application.rb？

我问的原因是想象一个Rails应用程序是rails new -ed没有--skip-test-unit选项。

然后在很晚的日子，这个应用程序切换到RSpec。如何config/application.rb重新生成，就好像--skip-test-unit选项最初提供给rails new ...？

所有这将有效地要做的就是改变require陈述附近config/application.rb文件从顶部：

require 'rails/all'

到：

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

来源

2015-03-08 Eliot Sykes

我还没有试过这个，但是你不能只是运行'rails new --skip-test-unit'到一个新的目录并且将'config/application.rb'复制到你现有的应用程序中？ – 2015-03-08 17:55:08

谢谢@iqnivek，是的，肯定会工作，并成为一个很好的解决方案。也许有些东西是更轻量级的解决方案。 – 2015-03-08 18:12:17

删除现有config/application.rb，并在该目录上述项目根目录，运行rails new ...并带有所需选项，包括应用程序目录名称和--skip-test-unit选项和的--skip选项，这使已经存在的rails new ...跳过创建文件：

# Inside your-rails-app/ directory: 

# 1. Remove config/application.rb 
rm config/application.rb 

# 2. Move up one directory 
cd .. 

# 3. Regenerate rails application with the --skip 
# option, using the name of your-rails-app. The 
# --skip option will not generate files that 
# already exist. 
#  
# This assumes you have rails installed as a global 
# gem, of the version given in the command (version 
# x.y.z in this case, replace with the version of Rails 
# your app uses, e.g. 4.2.88): 
rails _x.y.z_ new your-rails-app --skip --skip-test-unit 

# 4. Run git status to see if any files were unexpectedly added 
# (for example the README.rdoc file will be created 
# if it did not exist). 
git status 

# 5. Clean up and commit the changes you want.

就是这样！

来源

2015-05-21 16:51:46

如何在Rails 4.2中重新生成config/application.rb？

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