为什么在 Rails 3 中没有发现 lib/tasks 中我的自定义 rake 任务？
内置的 rake 任务工作正常，但我的新自定义任务（在 Project/lib/tasks/ payments.rb 中）未加载：
namespace :payments do
desc "Tally payments at the end of the month"
task :compute => :environment do
BillingPeriod.compute_new_period
end
end
$ rake payments:compute
(in /Users/rob/Code/Apps/skyfarm)
rake aborted!
Don't know how to build task 'payments:compute'
如果我加载文件 application.rb，它工作正常：
require 'lib/tasks/payments.rb'
...但它会破坏其他东西:
$ rails s
./lib/tasks/payments.rb:1: undefined method `namespace' for main:Object (NoMethodError)
Build-in rake tasks work fine, but my new custom one, in Project/lib/tasks/payments.rb doesn't get loaded:
namespace :payments do
desc "Tally payments at the end of the month"
task :compute => :environment do
BillingPeriod.compute_new_period
end
end
$ rake payments:compute
(in /Users/rob/Code/Apps/skyfarm)
rake aborted!
Don't know how to build task 'payments:compute'
It works fine if I load the file application.rb:
require 'lib/tasks/payments.rb'
...but it breaks other things:
$ rails s
./lib/tasks/payments.rb:1: undefined method `namespace' for main:Object (NoMethodError)
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将文件扩展名从
.rb更改为.rake。Change the file extension from
.rbto.rake.在这种特定情况下，没有
.rake扩展名导致了错误。然而，我今天在 Rails 4.2 应用程序中遇到了同样的问题，这是因为我没有用于我的 rake 任务的desc，所以请确保您是否正在编写自己的任务（即不是生成一个），您添加一个desc。有关更多信息：http://guides.rubyonrails.org/command_line.html#custom -rake-任务
In this specific case, not having a
.rakeextension caused the error. However, I had the same issue with a Rails 4.2 app today, and it was because I did not have adescfor my rake task, so make sure if you're writing your own task (i.e. not generating one) that you add adesc.For more information: http://guides.rubyonrails.org/command_line.html#custom-rake-tasks
根据 Rails 指南 2.10 自定义 Rake 任务
但你有
.rb扩展名。As per the Rails guide 2.10 Custom Rake Tasks
But you have
.rbextension.