user_ip_ban_policy.rb

class UserIpBanPolicy < ApplicationPolicy
  def index?
    zooniverse_admin?
  end

  def show?
    zooniverse_admin?
  end

  def create?
    zooniverse_admin?
  end

  def update?
    false
  end

  def destroy?
    zooniverse_admin?
  end

  class Scope < Scope
    def resolve
      zooniverse_admin? ? scope.all : scope.none
    end
  end
end