ruby-on-rails - 在 "tmp:clear"之后运行任务

Question

我有一个任务想要在运行 rails tmp:clear

后运行

namespace :myapp do
  task :clear do
    # do some stuff
  end
end

我了解到我可以通过增强这项任务来做到这一点:

Rake::Task['tmp:clear'].enhance(['myapp:clear'])

问题是，当我的代码加载时，tmp:clear未定义，因此失败:

$ rails tmp:clear
rails aborted!
 Don't know how to build task 'tmp:clear' (See the list of available tasks with `rails --tasks`)
 myapp/lib/tasks/clear.rake:7:in `<top (required)>'

Answer 1

Rails 任务在本地任务之后加载。您需要先require 'rails/tasks'才能避免这种情况。

完整的解决方案:

require 'rails/tasks'

namespace :myapp do
  task :clear do
    puts "do some stuff"
  end
end

Rake::Task['tmp:clear'].enhance(['myapp:clear'])