rails_admin用户授权

Question

我是Rails的新手，尤其是rails_admin。 如何在尝试访问管理页面时通知登录前端的用户没有ADMIN？ 谢谢。 这是index.html.erb

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Answer 1

application.html.erb

<p class="notice"><%= notice %></p>
<p class="alert"><%= alert %></p>

应用程序控制器

class ApplicationController < ActionController::Base
  ...
  rescue_from CanCan::AccessDenied do |exception|
    redirect_to main_app.root_path, alert: exception.message
  end

应用程序/模型/ ability.rb

class Ability
  include CanCan::Ability
  def initialize(user)
    user ||= User.new # guest user (not logged in)
    if user.roles.include? :admin
      can :manage, :all
    else

https://github.com/CanCanCommunity/cancancan