ruby-on-rails – Rails 4 Rolify Gem：用户角色未通过UI更新

分类：Ruby作者：编程之家用户
我有一个编辑视图,允许我更新特定用户的角色.我已经包含了下面的代码,但是,为了给你一个想法,当我取消选中页面上的框时,我的控制器中的put语句正确地发现角色关联是错误的,可以在日志中进一步查看.

但是,稍后在日志中,您可以看到角色重新关联回“true”,我不确定为什么会出现这种情况！

如果未选中复选框,我希望从用户中删除这些角色.

用户/ edit.html.erb：

<fieldset>
   <%= form_for @user,:url => {action: "update"},:html => { :class => 'user-role' } do |f| %>

     <h1 class="h1-heading">User Roles</h1>
     <p class="user-paragraph"> Check the boxes to grant different roles to <%= @user.first_name %> <%= @user.last_name %>:</p>
       <%= f.label(:admin) do %>
         <%= hidden_field_tag(:admin,0) %>
         <%= check_box_tag(:admin,1,@user.has_role?(:admin)) %>
         Administrator
       <% end %>

       <%= f.label(:member) do %>
         <%= hidden_field_tag(:member,0) %>
         <%= check_box_tag(:member,@user.has_role?(:member)) %>
         Member
       <% end %>
     <%= f.submit class: 'btn btn-primary-dialog pull-right' %>  
   <% end %>
 </fieldset>

users_controller.rb：

def update
    @user = User.find(params[:id])
    @customer = current_user.customer
    @logged_in_user = User.find_by_email(current_user.email)

    if params[:admin] == "1"
      @user.grant(:admin)
    elsif params[:admin] == "0"
      @user.remove_role(:admin)
    end

    if params[:member] == "1"
      @user.grant(:member)
    elsif params[:member] == "0"
      @user.remove_role(:member)
    end

    puts "NEW ROLES"
    puts @user.has_role? :member
    puts @user.has_role? :admin

    if @user.update_attributes(params[:user])
      puts "UPDATING USER"
      puts @user.has_role? :member
      puts @user.has_role? :admin
      redirect_to '/users/show',:flash => { :alert => 'User was successfully updated.' }          
      end
    end
  end

日志：

正如您在下面看到的,它返回’false’,然后在更新属性时,再次将角色设置为’true’,我无法确定发生的位置或原因！

Started PATCH "/users/51" for 127.0.0.1 at 2015-06-26 13:48:58 +1000
Processing by UsersController#update as HTML
  Parameters: {"utf8"=>"✓","authenticity_token"=>"+qNti57HxMa2B/a+c6nS71Qp0p7hf+kTE4b5eiBI4No=","admin"=>"0","member"=>"0","commit"=>"Update User","id"=>"51"}
  User Load (0.5ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 1 ORDER BY `users`.`id` ASC LIMIT 1
  Customer Load (0.3ms)  SELECT `customers`.* FROM `customers` WHERE `customers`.`email` = 'ryan@ryandrake.com' LIMIT 1
  Company Load (0.2ms)  SELECT `companies`.* FROM `companies` WHERE `companies`.`domain` = 'ryandrake.com' LIMIT 1
  CustomerAccess Load (0.3ms)  SELECT `customer_accesses`.* FROM `customer_accesses` WHERE `customer_accesses`.`customer_id` = 1 LIMIT 1
  User Load (0.3ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 51 LIMIT 1
  CACHE (0.0ms)  SELECT `customers`.* FROM `customers` WHERE `customers`.`email` = 'ryan@ryandrake.com' LIMIT 1
  User Load (0.2ms)  SELECT `users`.* FROM `users` WHERE `users`.`email` = 'ryan@ryandrake.com' LIMIT 1
  Role Load (0.3ms)  SELECT `roles`.* FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 51 AND `roles`.`name` = 'admin'
   (0.1ms)  BEGIN
   (0.2ms)  DELETE FROM `users_roles` WHERE `users_roles`.`user_id` = 51 AND `users_roles`.`role_id` IN (9)
   (0.9ms)  COMMIT
   (0.3ms)  SELECT COUNT(count_column) FROM (SELECT 1 AS count_column FROM `users` INNER JOIN `users_roles` ON `users`.`id` = `users_roles`.`user_id` WHERE `users_roles`.`role_id` = 9 LIMIT 1) subquery_for_count
  Role Load (0.3ms)  SELECT `roles`.* FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 51 AND `roles`.`name` = 'member'
   (0.1ms)  BEGIN
   (0.2ms)  DELETE FROM `users_roles` WHERE `users_roles`.`user_id` = 51 AND `users_roles`.`role_id` IN (3)
   (0.4ms)  COMMIT
   (0.5ms)  SELECT COUNT(count_column) FROM (SELECT 1 AS count_column FROM `users` INNER JOIN `users_roles` ON `users`.`id` = `users_roles`.`user_id` WHERE `users_roles`.`role_id` = 3 LIMIT 1) subquery_for_count
NEW ROLES
  Role Load (0.7ms)  SELECT `roles`.* FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 51 AND (((roles.name = 'member') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))
false
  Role Load (0.6ms)  SELECT `roles`.* FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 51 AND (((roles.name = 'admin') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))
false
   (0.3ms)  BEGIN
  Customer Load (0.3ms)  SELECT `customers`.* FROM `customers` WHERE `customers`.`email` = 'ryan.drake2@otherlevels.com' LIMIT 1
  ExtraCustomerAccount Load (0.6ms)  SELECT `extra_customer_accounts`.* FROM `extra_customer_accounts` WHERE `extra_customer_accounts`.`email` = 'ryan.drake2@otherlevels.com' LIMIT 1
  Customer Load (0.3ms)  SELECT `customers`.* FROM `customers` WHERE `customers`.`id` = 1 LIMIT 1
  Company Load (0.2ms)  SELECT `companies`.* FROM `companies` WHERE `companies`.`domain` = 'otherlevels.com' LIMIT 1
  Company Load (0.2ms)  SELECT `companies`.* FROM `companies` WHERE `companies`.`name` = 'None' ORDER BY `companies`.`id` ASC LIMIT 1
  Role Load (0.3ms)  SELECT `roles`.* FROM `roles` WHERE `roles`.`name` = 'member' AND `roles`.`resource_type` IS NULL AND `roles`.`resource_id` IS NULL ORDER BY `roles`.`id` ASC LIMIT 1
  Role Exists (0.2ms)  SELECT 1 AS one FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 51 AND `roles`.`id` = 3 LIMIT 1
   (0.2ms)  SELECT `roles`.id FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 51
  Role Load (0.2ms)  SELECT `roles`.* FROM `roles` WHERE `roles`.`id` = 3 LIMIT 1
  Role Load (0.3ms)  SELECT `roles`.* FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 51
   (0.2ms)  INSERT INTO `users_roles` (`user_id`,`role_id`) VALUES (51,3)
  Role Load (0.6ms)  SELECT `roles`.* FROM `roles` WHERE `roles`.`name` = 'admin' AND `roles`.`resource_type` IS NULL AND `roles`.`resource_id` IS NULL ORDER BY `roles`.`id` ASC LIMIT 1
  Role Load (0.3ms)  SELECT `roles`.* FROM `roles` WHERE `roles`.`id` IN (3,9)
   (0.2ms)  INSERT INTO `users_roles` (`user_id`,9)
   (0.3ms)  COMMIT
UPDATING USER
  Role Load (0.4ms)  SELECT `roles`.* FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 51 AND (((roles.name = 'member') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))
true
  Role Load (0.3ms)  SELECT `roles`.* FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 51 AND (((roles.name = 'admin') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))
true
  Role Load (0.3ms)  SELECT `roles`.* FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 1 AND (((roles.name = 'otherlevels_admin') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))
Redirected to http://localhost:3000/users/show
Completed 302 Found in 80ms (ActiveRecord: 15.1ms)

如果指出它没有正确更新参数,我会非常乐意帮忙！

解决方法

你的主要问题是：

@ user.update_attributes(PARAMS [：USER_ID])

编辑 – 我原来的解决方案根本不起作用.

与我原来的解决方案不同,这不需要简单的形式.

首先让我们设置表单：

<%= form_for(@user,url: {action: "update"},html: { class: 'user-role' }) do |f| %>
  <h1 class="h1-heading">User Roles</h1>
  <p class="user-paragraph"> Check the boxes to grant different roles to <%= @user.first_name %> <%= @user.last_name %>:</p>
  <%= f.fields_for(:roles) do |r| %>
    <%= r.hidden_field :name unless r.object.persisted? %>
    <%= r.label :_keep do %>
      <%= r.check_box :_keep,checked: r.object.persisted? %>
      <%= r.object.name %>
    <% end %>
  <% end %>
<% end %>

我们将为角色传递一些嵌套属性：

>名称(适用于新角色)
> _keep一个虚拟属性 – 我们保存角色
> id(如果角色存在,则由rails自动插入)

然后我们将用户类修改为accepts_nested_attributes_for：roles

class User < ActiveRecord::Base
  rolify
  accepts_nested_attributes_for :roles,allow_destroy: true,reject_if: ->(hash){ hash["_keep"] != "1" }
end

注意reject_if： – >(哈希){hash [“_ keep”]！=“1”}这意味着如果取消选中该复选框,我们就不会创建一个角色,而如果我们传递_delete = true则会删除该角色的allow_destroy .

我们需要将_keep虚拟属性添加到R​​ole：

class Role < ActiveRecord::Base
  has_and_belongs_to_many :users,:join_table => :users_roles
  belongs_to :resource,:polymorphic => true
  validates :resource_type,:inclusion => { :in => Rolify.resource_types },:allow_nil => true
  scopify
  attr_accessor :_keep
  AVAILABLE_ROLES = %w{ administrator member }
end

我们还添加了一个AVAILABLE_ROLES常量,以便我们可以获得角色列表.

class UsersController < ApplicationController
  before_action :set_user,only: [:show,:edit,:update,:destroy]

  # ...

  # GET /users/1/edit
  def edit
    # Seed checkboxes for roles
    Role::AVAILABLE_ROLES.each do |role|
      # This adds an unsaved role to the user if it does not exist
      @user.roles.build(name: role) unless @user.has_role?(role)
    end
  end

  # PATCH/PUT /users/1
  def update
    if @user.update(update_params)
      redirect_to @user,notice: 'User was successfully updated.'
    else
      render :edit
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_user
      @user = User.find(params[:id])
    end

    # Only allow a trusted parameter "white list" through.
    def user_params
      params.require(:user).permit(:username,:email,roles_attributes: [:name,:id,:_keep,:_destroy])
    end

    def update_params
      user_params.tap do |o|
        # Adds the _delete attribute if the keep checkbox is unchecked
        o[:roles_attributes] = o[:roles_attributes].map do |k,h|
           attrs = h.merge(_destroy: (h[:_keep] != "1"))
           # Don't let the user update the name of an existing Role!
           # This would let a malicious user to grant any role.
           h.key?(:id) ? attrs.except(:name) : attrs 
        end
      end
    end
end

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。

相关推荐

ruby on rails validates
validates:conclusion,:presence=>true,:inclusion=>{:in=>[0,1]}validates:email,:presence=>true,:length=>{:minimum=>3,:maximum=>254},:uniqueness=>true,:email=>truevalidates:ending_order,
redis 集群搭建
一、redis集群搭建redis3.0以前，提供了Sentinel工具来监控各Master的状态，如果Master异常，则会做主从切换，将Slave作为master，将master做为slave。其配置也较复杂，且表现一般。redis3.0以后已经支持集群容错功能，并且非常简单1.1素材准备centos7（集群搭建，至少三个master。需
如何让ruby中的ri起作用
分享一下我老师大神的人工智能教程。零基础！通俗易懂！风趣幽默！还带黄段子！希望你也加入到我们人工智能的队伍中来！https://blog.csdn.net/jiangjunshow                 不知道大家是否注意到，全新安装ruby之后，无论是在windows或是linux还是macosX下使用rix
ruby方法名之命名方式
上一篇博文 ruby传参之引用类型 里边定义了一个方法名 modify_my_object!，这个方法名是以!结尾，在ruby的对象里边是用于表达修改本身的意思。比如String#gsub，返回的是一个新的字符串对象；而String#gsub!，返回的是自身已经被修改的对象。不止!这样的特殊字符可以命名，ruby
python入门
一编程与编程语言 什么是编程语言？ 能够被计算机所识别的表达方式即编程语言,语言是沟通的介质，而编程语言是程序员与计算机沟通的介质。 什么是编程？ 编程即程序员根据需求把自己的思想流程按照某种编程语言的语法风格编写下来，产出的结果就是包含一堆字符的文件。二编程语言分
雷林鹏分享：Ruby 类和对象
Ruby类和对象Ruby是一种完美的面向对象编程语言。面向对象编程语言的特性包括：数据封装数据抽象多态性继承这些特性将在面向对象的Ruby中进行讨论。一个面向对象的程序，涉及到的类和对象。类是个别对象创建的蓝图。在面向对象的术语中，您
极客时间
1.ruby的标签<ruby>漢<rp>(<p><rt>han<t><rp>)<p>字<rp>(<p><rt>zi<t><rp>)<p><uby> 
Redis安装及单机集群搭建总结(多节点搭建集群和单机集群大同小异)
1、软件安装1.安装包是个压缩包-->解压到/homeedis_tar下命令如下： tar-zxvf./../-C/homeedis_tar2.安装c++环境yum-yinstallgcc-c++（注：redis底层源码是c++）3.解压后需要源码编译进入到redis-3.0.0后执行make4.编译完后开始安装需要指定一个安装路径
sass(scss的安装
1.sass基于Ruby语言开发而成，因此安装sass前需要安装Ruby。（注:mac下自带Ruby无需在安装Ruby!）window下安装SASS首先需要安装Ruby，先从官网下载Ruby并安装。安装过程中请注意勾选AddRubyexecutablestoyourPATH添加到系统环境变量。ruby官网：https:/ubyinstaller.org/downloa
从0使用Ruby on Rails打造企业级RESTful API项目实战之我的云音乐
本节对我们项目实现的功能和知识点做一个简单的介绍，因为是RESTfulAPI项目，所以对于后端来说基本上没有什么UI界面可展示，那我们就在关键的点，使用客户端（Android）实现的效果图。课程简介这是一门企业级项目实战课程，目的是从0使用Rails开发一个企业级RESTfulAPI项目；他不能让你年薪30
redis 集群搭建
注意点：1.redis集群至少需要6个节点。2.redis集群至少部署在3台服务器上。3.redis的版本需要在3.0以上。4.需要ruby的支持。步骤：1.安装依赖环境：yuminstallgcc-c++2.下载ruby-2.4.6，编译安装https://cache.ruby-lang.org/pububy/2.4uby-2.4.6.tar.gztarzxf ruby-2.4.6.
ruby – sleep 0有特殊意义吗？
在我的客户项目中,我看到很多睡眠用法0.代码看起来像这样.whiletrue......sleep0end通过阅读SO的一些答案,如this,似乎睡眠0具有一定的意义.我现在想知道的是,在时间片0期间调度其他线程运行(如果它们正在等待运行)是像ruby或python这样的langVM的工作,或者它
Day11 - Ruby的block，proc，lamdba方法比较
前情提要：第11天开始，要更深入Ruby的精髓！Ruby经典面试题目#11Ruby的block，proc，lamdba方法比较？What’sdifferencebetweenblocks，procsandlambdas？block代码内存块代码内存块是用do…end围起来，围出特定一个区域、放代码的地方。就好像跑马拉松一样，道路上会进行交通管制，把参赛者
Linux中Redis集群离线版安装步骤
安装环境及工具系统：RedHatEnterpriseLinuxServer工具：XShell5及Xftp5等远程工具安装包：Ruby-2.4.1及以上       Rubygems-2.6.12及以上       Redis-3.2.8及以上(3.x版本才开始支持集群功能)       Redis-3.0.0-gem及以上（该版本不一定要和red
redis requires ruby version 2.2.2的解决方案
 今天在做Redis的Cluster集群的时候，在执行geminstallredis时，提示如下错误：geminstallredisERROR:Errorinstallingredis:redisrequiresRubyversion>=2.2.2.CentOS7yum库中ruby的版本支持到2.0.0，可gem安装redis需要最低是2.2.2，采用rvm来更新ruby：1
Rails 4 jQuery与javascript冲突
我试图在Rails4中制作应用程序.我正在挣扎.我正在尝试合并一个bootstrap主题,我遇到了供应商javascripts和其余代码的问题.我认为问题可能与在我的application.js中使用jQuery然后使用以’$’符号开头的供应商.js文件有关：$.circleProgress={我刚看过这个：https://learn.jqu
sass环境搭建之node-sass，ruby
该内容全部为搬运，感谢作者的分享~，附有原文链接。使用ruby环境SASS学习系列之(一)---------SASS，SCSS环境搭建(Ruby) 使用node-sassSASS学习系列之(二)---------SASS，SCSS环境搭建(node-sass)通过命令编译：npmrunsassinput.scssoutput.csssass-loader在webpack打包里
我如何使用PHP 5.3 Closures,比如我们在Ruby中使用Blocks
我如何使用PHP5.3Closures,比如我们在Ruby中使用Blocks.我从来没有在Ruby中使用’for’循环,因为使用带有’each”read_all”inject’方法的块.我如何使用像Ruby块这样的PHP5.3闭包,并说再见’for’Loops
redis requires Ruby version &gt;= 2.2.2问题
一、说明：搭建Redis集群时，安装geminstallredis报错： redisrequiresRubyversion>=2.2.2的报错，查了资料发现是Centos默认支持ruby到2.0.0，可gem安装redis需要最低是2.2.2二、解决办法：解决办法是先安装rvm，再把ruby版本提升至2.3.31.安装curlsudoyuminstal
Deepin linux Compass.app安装
compass.app是集成了sass的工具，安装完Compass就能够使用sass。首先，上官网 可以看到官网上推荐的两种sass使用方式，application&commandlineapplication里不仅仅只有Compass，不过现在点击Compass.app进行下载。虽然通常我们说sass运行在Ruby环境下，但Compass.app安装使用并不需要
pythonJavaScriptjavaHTMLPHPreactjsC#AndroidCSSNode.jssqlrpython-3.xMysqLjQueryc++pandasFlutterangularIOSdjangolinuxswifttypescript路由器JSON路由器设置无线路由器h3c华三华三路由器设置华三路由器电脑软件教程arraysdocker软件图文教程Cvue.jslaravelspring-boot