Smart use of #tap by dhh

gistfile1.rb

def revoke(user)
  proxy_association.owner.tap do |project|
    # You can't remove the last user with access (someone has to have access to the project!)
    if project.users.many?
      if user.pending? && user.projects.one?
        user.destroy
      else
        project.users.delete(user)
        user.touch
      end

      project.touch :accesses_updated_at
    end
  end
end