how to generate a task in ruby on rails

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ruby on rails 生成task的方法：

$ rails g task task_namespace task_name1 task_name2

$ create lib/tasks/task_namespace.rake

 

task文件里面：

 

namespace :task_namespace do

 

  desc "this is describe"

  task :task_name1 => :environment do

 

  end

 

  desc "this is also describe"

  task :task_name2 => :environment do

 

  end

 

end

 

使用 rake -T 查看所有task

 

rake task_namespace:task_name1    # this is describe

rake task_namespace:task_name2    # this is also describe