How to pass command line argument to Rake task

Following is the way to pass command line argument to Rake task,

rake app:test argument_name=’Hello World’

And read command line argument in following rake task,

namespace :app do
desc ‘test’
task :test => :environment do |t|
puts ENV['argument_name']
end
end

Restrict rake routes listing to particular Controller in Ruby on Rails

We can restrict the routes listing to particular CONTROLLER by passing CONTROLLER variable as,

rake routes CONTROLLER=profiles

Above command will display routes of profiles controller.