gistfile1.rb

# no maint page unless migrations are required

def conditionally_enable_maintenance_page
  if c.migrate?
    info "~> testing necessity for migrations & maintenance page"

    if `cd #{c.release_path} && bundle exec rake db:migrate:status | grep down | wc -l`.to_i > 0
      info "~> migrations pending, maintenance page required"
      super
    else
      info "~> no migrations pending, maintenance page not required, migration command cancelled"
      @cancel_migrations = true
    end
  end
end

def migrate
  return if @cancel_migrations
  super
end