如何检测Rails环境里面每当 [英] How to detect Rails environment inside whenever

问题描述

如果您了解 每次 时，此问题可能只会有意义gem用于创建 cron 作业。

对于我的应用程式，我想在所有环境中使用时使用，包括测试和开发。

我的 schedule.rb 看起来像这样：

For my app, I want to use whenever in all the environments, including testing and development.
My schedule.rb looks like this:

set :output, {
    :error    => "#{path}/log/error.log",
    :standard => "#{path}/log/cron.log"
}

set :environment, Rails.env.to_sym
every 5.minutes do
  rake 'db:activity:synchronize'
end

但在 .env.to_sym （，并代表 RAILS_ENV ）：

/home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/gems/whenever-0.6.8/lib/whenever/job_list.rb:21:in `eval': uninitialized constant Whenever::JobList::Rails (NameError)
    from /home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/gems/whenever-0.6.8/lib/whenever/job_list.rb:21:in `eval'
    from /home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/gems/whenever-0.6.8/lib/whenever/job_list.rb:21:in `initialize'
    from /home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/gems/whenever-0.6.8/lib/whenever.rb:15:in `new'
    from /home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/gems/whenever-0.6.8/lib/whenever.rb:15:in `cron'
    from /home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/gems/whenever-0.6.8/lib/whenever/command_line.rb:41:in `run'
    from /home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/gems/whenever-0.6.8/lib/whenever/command_line.rb:8:in `execute'
    from /home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/gems/whenever-0.6.8/bin/whenever:38:in `<top (required)>'
    from /home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/bin/whenever:19:in `load'
    from /home/marius/.rvm/gems/ruby-1.9.2-p290@uxolo/bin/whenever:19:in `<main>'

，我的问题基本上归结为：

So, my question basically boils down to:

1. 如何访问当前环境或
   
2. 在所有环境中使用时应该怎么做？



推荐答案

错误消息表明Rails未定义。即当您询问运行轨道的环境时，框架未加载。

The error message suggests that Rails isn't defined. i.e the framework isn't loaded when you're asking the question what environment is rails running with.

事实上，从任何时候看来，它看起来像rails不是一个要求的代码（即，你可以安装和运行时，没有rails甚至安装在系统）。因此，没有办法每当看到你的轨道环境（据我所知）

In fact from looking at the code for Whenever it looks like rails isn't a requirement for it (i.e. You can install and run Whenever without rails even being installed on your system). Hence there's no way for Whenever to look at your rails environment (as far as i can tell)

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