Question

I’ve seen similar questions here, couldn’t figure out the answer I’m just starting with ror development. I’ve got a rake task :

namespace:generate do 
    desc "Export to txt"
    task :txt => :environment do |t, args|
        puts "testing #{args}"
    end
end

When I do this from command line:

rake generate:txt

I get testing {}

When I try to inject value as an argument like this :

rake generate:txt[testvalue] or

rake generate:txt testvalue

First one does nothing same output testing {} second one I get an error. So in which way do I invoke command so I populate args with some value(s)?

Answer 1

IIRC, you have to declare parameters explicitly.

task :environment do
  puts "setting up env"
end

namespace :generate do
  desc "Export to txt"
  task :txt, [:filename] => :environment do |t, args|
    puts "testing #{args}"
  end
end

Then

% rake generate:txt['foo']
setting up env
testing {:filename=>"foo"}