Capistrano：deploy.rb文件重构 [英] Capistrano: deploy.rb file refactoring

问题描述

我的deploy.rb中有以下代码

I have following code in my deploy.rb

namespace :app do
  desc "copies the configuration frile from ~/shared/config/*.yml to ~/config"
  task :copy_config_files,:roles => :app do
    run "cp -fv #{deploy_to}/shared/config/hoptoad.rb #{release_path}/config/initializers"
    run "cp -fv #{deploy_to}/shared/config/app_config.yml #{release_path}/config/app_config.yml"
  end
end

我认为保持我的deploy.rb文件整洁是一个好主意，我尝试将上述代码移至config下的capistrano_utilities.rb。我正在使用Rails应用程序。然后我将以下代码行添加到deploy.rb

I thought it would be a good idea to keep my deploy.rb file clean and I attempted to move above code to capistrano_utilities.rb under config. I am using Rails application. And I added following line of code to deploy.rb

require File.expand_path(File.dirname(__FILE__) + "/../lib/capistrano_utilities")

现在我遇到以下错误。

undefined method `namespace' for main:Object (NoMethodError)

deploy.rb中self的值为Capistrano :: Configuration。而capistrano_utilities中self的值为Main。因此，我理解了为什么会出现名称空间方法错误。解决此问题的方法是什么？

The value of self in the deploy.rb is Capistrano::Configuration . While the value of self in capistrano_utilities is Main. So I understand why I am getting namespace method error. What is the fix for this problem?

推荐答案

在您的 config / deploy.rb ，请尝试加载，而不是要求。另外，capistrano已经像您在 RAILS_ROOT 一样运行，因此无需使用 __ FILE __ ：

In your config/deploy.rb, try load instead of require. Also, capistrano already runs as if you're at the RAILS_ROOT, so there's no need to use __FILE__:

load "lib/capistrano_utilities"

在capistrano配置文件中，重新定义了 load 以将另一个配置文件加载到当前配置中。当传递路径时，它实际上会调用 load_from_file （由capistrano定义的私有方法），该函数仅从磁盘和 instance_eval 是。

In a capistrano config file, load is redefined to load another configuration file into the current configuration. When passing a path to it, it actually calls load_from_file (a private method defined by capistrano) that just reads the file from disk and instance_eval's it.

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