在 rails 任务中没有正确设置参数？

Question

我很好奇为什么我的 args 变量在以下任务中总是返回为 {}:

desc "Create an Api Key assuming one doesn't exist."
task :create_api_key, [:name] => :environment do | t, args |
  if !ApiKey.find_by_application_name(args[:name])
    binding.pry
    if ApiKey.new(:application_name => args[:name], :api_key => SecureRandom.hex(32)).save!
      puts "Your key is: " + ApiKey.find_by_application_name(args[:name]).api_key
    else
      puts "Could not create the api key, you might be missing an argument: Application Name."
    end
  else
    puts "This application already contains an api key."
  end
end

下面是一个运行的任务（注意binding.pry）：

$ bin/rake create_api_key "xaaron_test"

From: /Users/Adam/Documents/Rails-Projects/BlackBird/lib/tasks/create_api_key.rake @ line 4 :

    1: desc "Create an Api Key assuming one doesn't exist."
    2: task :create_api_key, [:name] => :environment do | t, args |
    3:   if !ApiKey.find_by_application_name(args[:name])
 => 4:     binding.pry
    5:     if ApiKey.new(:application_name => args[:name], :api_key => SecureRandom.hex(32)).save!
    6:       puts "Your key is: " + ApiKey.find_by_application_name(args[:name]).api_key
    7:     else
    8:       puts "Could not create the api key, you might be missing an argument: Application Name."
    9:     end

[1] pry(main)> args
=> {}

即使我这样做 bin/rake create_api_key xaaron_test 我也会遇到同样的问题。到底是怎么回事？有什么小错误我忘了吗？

更新

我也吐了t看看里面有什么：

pry(main)> t
=> <Rake::Task create_api_key => [environment]>

Answer 1

您可以将参数直接放在任务名称后的 [] 中，从而将参数传递给任务。

例如

rake create_api_key[xaaron_test]

如果使用zsh，需要对开头进行转义[

例如

rake create_api_key\[xaaron_test]

在 rails 任务中没有正确设置参数？

Not setting arguments properly in rails tasks?

ruby-on-rails

ruby

rake

rake-task

rakefile

更新