demarches-normaliennes/lib/tasks/2017_12_20_delete_old_administration.rake

require Rails.root.join("lib", "tasks", "task_helper")

namespace :'2017_12_20_delete_old_administration' do
  task set: :environment do
    Administration.all.each do |a|
      rake_puts "Deleting #{a.email}"
      a.destroy
    end
  end
end