namespace :db do
  namespace :migrate do
    desc "Rename migrations to repair numbering collisions.  Provide both of the following: VERSION=current_number TO=desired_number"
    task :renumber => :environment do
      raise "please provide a migration number to start from (VERSION=x)" if ENV["VERSION"].blank?
      raise "please provide a desired new migration number for migration ##{ENV["VERSION"]} (TO=x)" if ENV["TO"].blank?
      ActiveRecord::Migrator.renumber("db/migrate", ENV["VERSION"] ? ENV["VERSION"].to_i : nil, ENV["TO"] ? ENV["TO"].to_i : nil)
    end
  end
end