仅为 Rake 任务运行初始化程序 [英] Run initializer only for Rake tasks

问题描述

我希望在执行 Rake 任务时运行某个初始化程序，但在运行 Rails 服务器时不运行.

I'd like a certain initializer to run when executing a Rake task, but not when running the Rails server.

区分 Rake 调用和服务器调用的最佳方法是什么?

What is the best way to differentiate a Rake invocation and a server invocation?

推荐答案

Rake 允许您指定任务的依赖项.最好的推荐操作是将特定于 rake 的初始化放在它自己的任务中，而该任务又取决于环境"任务.例如:

Rake allows you to specify dependencies for your tasks. The best recommended action would be for you to put your rake-specific initialization in its own task that in turn depends on the "environment" task. For example:

namespace :myapp do
    task :custom_environment => :environment do
        # special initialization stuff here
        # or call another initializer script
    end

    task :my_task => :custom_environment do
        # perform actions that need custom setup
    end
end

如果你想创建一个特定于 rake 的初始化脚本目录，就像我们为 rails 所做的那样，我们只需在我们的 :custom_environment 任务中实现它.

If you want to make a rake-specific directory of initializer scripts like we have for rails proper, we would just implement that in our :custom_environment task.

task :custom_environment => :environment do
    Dir.glob("config/rake-initializers/*.rb").each do |initializer|
        require initializer
    end
end

这允许您将特定于 rake 的初始化器与常规初始化器分开.您只需要记住依赖于您设置的 :custom_environment.

This allows you to keep rake-specific intializers separate from the regular initializers. You just have to remember to depend on the :custom_environment you set up.

这篇关于仅为 Rake 任务运行初始化程序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！