Question

从我所记得的,文档中明确说明,在测试环境中,数据库总是被清除的,即使你运行Rake(没有参数 ) 。我想实现这样的一个目标,这样我是否运行任务并不重要,在我运行Rake时,总是有Rake的任务被执行。这有可能吗?默认任务启动的地方是这里吗?

Answer 1

Create a file called rakefile in the directory you want to run the task from. This code will make it so that if you just type "rake" my_default_task will run:

  task :default =>  my_default_task 

  task :my_default_task do
     puts "Now I am doing the task that Tempus wants done when he/she types  rake  in the console."
  end

  task :my_not_default_task do
    puts "This isn t the default task."
  end

但是,如果你输入 rake my_not_default_task ,那么 my_default_task 就不会运行。如果您想要它运行不管这里如何, 您可以做一件事 :

task :default =>  my_default_task 

task :my_default_task do
    puts "This is the default task"
end

task :my_not_default_task do
  puts "This isn t the default task."
end

Rake::Task[ my_default_task ].invoke

此代码中最后一行确保我的_ default_task 运行, 即使您调用其它任务, 所以如果您输入 rake my_ not_ default_task < 也会运行。



EDIT:
When you re working with rails you can put the tasks above in a file in the lib/tasks folder with an extension of .rake and rails will automagically run them when you do rake

Jason Seifer在rake 上有一个非常好的辅导。

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