选项和依赖项需要在数组中:

namespace :thing do
  desc "it does a thing"
  task :work, [:option, :foo, :bar] do |task, args|
    puts "work", args
  end
  
  task :another, [:option, :foo, :bar] do |task, args|
    puts "another #{args}"
    Rake::Task["thing:work"].invoke(args[:option], args[:foo], args[:bar])
    # or splat the args
    # Rake::Task["thing:work"].invoke(*args)
  end

end

Then

rake thing:work[1,2,3]
=> work: {:option=>"1", :foo=>"2", :bar=>"3"}

rake thing:another[1,2,3]
=> another {:option=>"1", :foo=>"2", :bar=>"3"}
=> work: {:option=>"1", :foo=>"2", :bar=>"3"}

注意:变量任务是任务对象，除非你知道/关心Rake内部，否则没有多大帮助。

RAILS的注意:

如果从Rails运行任务，最好通过添加=> [:environment]来预加载环境，这是一种设置依赖任务的方法。

  task :work, [:option, :foo, :bar] => [:environment] do |task, args|
    puts "work", args
  end

我在rake文件中使用了一个常规的ruby参数:

DB = ARGV[1]

然后我在文件底部去掉rake任务(因为rake将根据参数名查找任务)。

task :database_name1
task :database_name2

命令行:

rake mytask db_name

这感觉比我的var=foo ENV var和任务参数[blah, blah2]解决方案更干净。 存根有点麻烦，但如果您只有几个一次性设置的环境，那也不算太糟

使用传统的参数样式运行rake任务:

rake task arg1 arg2

然后使用:

task :task do |_, args|
  puts "This is argument 1: #{args.first}"
end

添加以下rake gem补丁:

Rake::Application.class_eval do

  alias origin_top_level top_level

  def top_level
    @top_level_tasks = [top_level_tasks.join(' ')]
    origin_top_level
  end

  def parse_task_string(string) # :nodoc:
    parts = string.split ' '
    return parts.shift, parts
  end

end

Rake::Task.class_eval do

  def invoke(*args)
    invoke_with_call_chain(args, Rake::InvocationChain::EMPTY)
  end

end

我不知道如何传递args和:environment，直到我解决了这个问题:

namespace :db do
  desc 'Export product data'
  task :export, [:file_token, :file_path] => :environment do |t, args|
    args.with_defaults(:file_token => "products", :file_path => "./lib/data/")

       #do stuff [...]

  end
end

然后我这样调用:

rake db:export['foo, /tmp/']

如果你懒得记参数位置是什么你想做一些类似ruby参数哈希的东西。您可以使用一个参数传入一个字符串，然后将该字符串正则化为一个选项散列。

namespace :dummy_data do
  desc "Tests options hash like arguments"
  task :test, [:options] => :environment do |t, args|
    arg_options = args[:options] || '' # nil catch incase no options are provided
    two_d_array = arg_options.scan(/\W*(\w*): (\w*)\W*/)
    puts two_d_array.to_s + ' # options are regexed into a 2d array'
    string_key_hash = two_d_array.to_h
    puts string_key_hash.to_s + ' # options are in a hash with keys as strings'
    options = two_d_array.map {|p| [p[0].to_sym, p[1]]}.to_h
    puts options.to_s + ' # options are in a hash with symbols'
    default_options = {users: '50', friends: '25', colour: 'red', name: 'tom'}
    options = default_options.merge(options)
    puts options.to_s + ' # default option values are merged into options'
  end
end

在命令行中。

$ rake dummy_data:test["users: 100 friends: 50 colour: red"]
[["users", "100"], ["friends", "50"], ["colour", "red"]] # options are regexed into a 2d array
{"users"=>"100", "friends"=>"50", "colour"=>"red"} # options are in a hash with keys as strings
{:users=>"100", :friends=>"50", :colour=>"red"} # options are in a hash with symbols
{:users=>"100", :friends=>"50", :colour=>"red", :name=>"tom"} # default option values are merged into options

namespace :namespace1 do
  task :task1, [:arg1, :arg2, :arg3] => :environment do |_t, args|
    p args[:arg1]
  end
end

调用

rake namespace1: task1(“1”、“2”、“3”)

不需要在调用时提供环境

在ZSH中需要附上引号

rake namespace1: task1(“1”、“2”、“3”)”