问RailsAdmin + Devise + CanCanCan角色没有工作:管理:all

EN

add_column :users, :superadmin_role, :boolean, default: false
enter code hereadd_column :users, :manager_role, :boolean, default:

class Ability

  include CanCan::Ability

  def initialize(user)
    user ||= User.new # guest user (not logged in)
    can :access, :dashboard    # allow access to dashboard
    can :access, :rails_admin  # access Rails Admin for Admin-users

    if user.superadmin_role?
      can :manage, :all
    end # role works correct

    if user.manager_role?
      can :read, :all   
    end #role works incorrect

  end
end