debian-mirror-gitlab/lib/constraints/group_url_constrainer.rb

class GroupUrlConstrainer
  def matches?(request)
    full_path = request.params[:group_id] || request.params[:id]

    return false unless NamespacePathValidator.valid_path?(full_path)

    Group.find_by_full_path(full_path, follow_redirects: request.get?).present?
  end
end