Rails Gemfile：在开发中使用一行，在生产中使用另一行 [英] Rails Gemfile: use one line in development, another in production

问题描述

我们在Heroku上运行独角兽，但在本地机器上使用Webrick进行开发。我们无法在本地机器上安装Unicorn。

Rails是否可以在生产环境中加载Unicorn gem？现在，我们的解决方案是在本地运行应用程序时注释掉Unicorn Gem，并在推送到Heroku时取消注释该宝石。

我们在Rails 3.2.12上。

Gemfile：

  source'http://rubygems.org '
 
 gem'rails'，'3.2.12'
 gem'jquery-rails'
 
 
＃＃======= ================================================== ================================ 
＃
＃＃======= ================================================== ================================ 
 gem'mongo'
 gem'mongo_mapper'
 gem'plucky'
 gem'bson_ext'
 gem'bson'
 gem'newrelic_rpm'
 gem'rpm_contrib'
 
 
 ＃Gems仅用于资产，默认情况下不需要生产环境中的
＃。 
 group：assets do 
 gem'sass-rails'，'〜> 3.2.3'
 gem'咖啡栏'，'〜> 3.2.1'
 gem'uglifier'，'> = 1.0.3'
结束
  

感谢！

解决方案

是否有可能让Rails仅加载Unicorn gem在生产？
现在，我们的解决方案是在本地运行
应用程序时注释掉Unicorn gem，并在推送到Heroku时取消注释该宝石。

是的，通过使用 Gemfile 中的组是可能的。更新您的 Gemfile ，如生产中的独角兽只有：

 ＃Gemfile 
组：生产do 
 gem'独角兽'
结束
  

自 WEBrick 是rails的默认Web服务器应用程序，您不需要为开发组指定任何内容。

在 Gemfile 更新后仍然会运行 bundle install 安装生产宝石。这绝对是一件好事，因为您希望确保您计划在生产中使用的宝石能够在项目的开发阶段与您的应用程序正常工作。

跳过生产组宝石的安装：

 捆绑安装 - 无需生产
  

需要注意的一点关于 - 没有生产选项是后续调用捆绑包安装和捆绑包更新也将跳过安装和更新生产宝石。要禁用此功能，您需要从 app_root / .bundle / config 中删除​​ BUNDLE_WITHOUT：production 行：

 ＃app_root / .bundle / config 
 
 BUNDLE_WITHOUT：制作
  

We run Unicorn on Heroku in production but use Webrick in development on a local machine. We are unable to install Unicorn on the local machine.

Is it possible to have Rails load the Unicorn gem only in production? Right now, our solution is to comment out the Unicorn gem when running the app locally and uncomment the gem when pushing to Heroku.

We're on Rails 3.2.12.

Gemfile:

source 'http://rubygems.org'

gem 'rails', '3.2.12'
gem 'jquery-rails'


# # =========================================================================================
# 
# #=========================================================================================
gem 'mongo'
gem 'mongo_mapper'
gem 'plucky'
gem 'bson_ext'
gem 'bson'
gem 'newrelic_rpm'
gem 'rpm_contrib'


# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails', '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'
  gem 'uglifier', '>= 1.0.3'
end

Thanks!

解决方案

Is it possible to have Rails load the Unicorn gem only in production? Right now, our solution is to comment out the Unicorn gem when running the app locally and uncomment the gem when pushing to Heroku.

Yes, it is possible by the use of groups in Gemfile. Update your Gemfile like follows for the unicorn gem in production only:

# Gemfile
group :production do 
  gem 'unicorn'
end

Since WEBrick is the default web server for rails apps, you wouldn't need to specify anything for development group.

Running bundle install after the Gemfile update will still install the production gems. This is definitely a good thing to do as you want to make sure the gems you are planning to use in production work correctly with your application from the development phase of project.

To skip installation of production group gems:

bundle install --without production

A point to be noted about the --without production option is that the subsequent calls to bundle install and bundle update are also going to skip installing and updating production gems. To disable this you'd need to remove the lineBUNDLE_WITHOUT: production from your app_root/.bundle/config:

# app_root/.bundle/config

BUNDLE_WITHOUT: production

这篇关于Rails Gemfile：在开发中使用一行，在生产中使用另一行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！