How to pass command line arguments to a rake task

Question

I have a rake task that needs to insert a value into multiple databases.

I\'d like to pass this value into the rake task from the command line, or from another

Answer 1

To run rake tasks with traditional arguments style:

rake task arg1 arg2

And then use:

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

Add following patch of rake gem:

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