ActionController::RoutingError - 升级后未定义的局部变量或方法“inherit_resources”

Question

我将我的 rails 版本从 3.2.13 升级到 4.0.0，我还升级了我的 gem。当我从本地服务器运行应用程序时，这是我得到的错误：

于 2016-06-24 11:54:37 +0530 开始 GET "/signup.html" for 127.0.0.1

ActionController::RoutingError - 未定义的局部变量或方法 inherit_resources' for AccountsController:Class: actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:69:inrescue 在控制器中' actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:64:in controller' actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:44:incall' 动作包 (4.0.0) lib/action_dispatch/journey/router.rb:71:in block in call'
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:incall' actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:655:in call' meta_request (0.4.0) lib/meta_request/middlewares/app_request_handler.rb:13:incall'
元请求（0.4.0） lib/meta_request/middlewares/meta_request_handler.rb:13:in call'
warden (1.0.6) lib/warden/manager.rb:35:inblock in call'warden (1.0.6) lib/warden/manager.rb:34:in call' client_side_validations (3.0.12) lib/client_side_validations/middleware.rb:17:incall' 机架 (1.5.5) lib/rack/etag.rb:23:in call' rack (1.5.5) lib/rack/conditionalget.rb:25:incall' 机架 (1.5.5) lib/rack/head.rb:11:in call' remotipart (1.2.1) lib/remotipart/middleware.rb:27:incall' actionpack (4.0.0) lib/action_dispatch/middleware/params_parser.rb:27:in call'
actionpack (4.0.0) lib/action_dispatch/middleware/flash.rb:241:in call' 机架 (1.5.5) lib/rack/session/abstract/id.rb:225:in context' rack (1.5.5) lib/rack/session/abstract/id.rb:220:incall'
actionpack (4.0.0) lib/action_dispatch/middleware/cookies.rb:486:in call' activerecord (4.0.0) lib/active_record/query_cache.rb:36:in call'活动记录（4.0.0） lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in call' activerecord (4.0.0) lib/active_record/migration.rb:369:in call' 动作包 (4.0.0) lib/action_dispatch/middleware/callbacks.rb:29:in block in call'
activesupport (4.0.0) lib/active_support/callbacks.rb:373:in _run__139117187983862327__call__callbacks' activesupport (4.0.0) lib/active_support/callbacks.rb:80:in run_callbacks' actionpack (4.0.0) lib/action_dispatch/middleware/callbacks.rb:27:incall'
rails-dev-tweaks (1.2.0) lib/rails_dev_tweaks/granular_autoload/middleware.rb:36:in call'
actionpack (4.0.0) lib/action_dispatch/middleware/remote_ip.rb:76:in call' airbrake (4.3.7) lib/airbrake/rails/middleware.rb:13:in call' better_errors (2.1.1) lib/better_errors/middleware.rb:84:in protected_app_call'better_errors (2.1.1) lib/better_errors/middleware.rb:79:in better_errors_call'
better_errors (2.1.1) lib/better_errors/middleware.rb:57:incall'
动作包 (4.0.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in call'
rack-contrib (1.4.0) lib/rack/contrib/response_headers.rb:17:incall' meta_request (0.4.0) lib/meta_request/middlewares/headers.rb:16:in call' actionpack (4.0.0) lib/action_dispatch/middleware/show_exceptions.rb:30:incall'
railties (4.0.0) lib/rails/rack/logger.rb:38:in call_app' railties (4.0.0) lib/rails/rack/logger.rb:21:inblock in call' activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in block in tagged'
activesupport (4.0.0) lib/active_support/tagged_logging.rb:25:in tagged' activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in tagged' railties (4.0.0) lib/rails/rack/logger.rb:21:incall' actionpack (4.0.0) lib/action_dispatch/middleware/request_id.rb:21:in call' rack (1.5.5) lib/rack/methodoverride.rb:21:incall' 机架 (1.5.5) lib/rack/runtime.rb:17:in call' activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:incall' 机架 (1.5.5) lib/rack/lock.rb:17:in call' actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:incall'airbrake (4.3.7) lib/airbrake/user_informer.rb:16:in _call' airbrake (4.3.7) lib/airbrake/user_informer.rb:12:incall' railties (4.0.0) lib/rails/engine.rb:511:in call' railties (4.0.0) lib/rails/application.rb:97:incall' 机架 (1.5.5) lib/rack/content_length.rb:14:in call' thin (1.5.1) lib/thin/connection.rb:81:inblock in pre_process'thin (1.5.1) lib/thin/connection.rb:79:in pre_process' thin (1.5.1) lib/thin/connection.rb:54:inprocess'thin (1.5.1) lib/thin/connection.rb:39:in receive_data' eventmachine (1.0.9) lib/eventmachine.rb:193:inrun'thin (1.5.1) lib/thin/backends/base.rb:63:in start' thin (1.5.1) lib/thin/server.rb:159:instart' 机架 (1.5.5) lib/rack/handler/thin.rb:16:in run' rack (1.5.5) lib/rack/server.rb:264:instart' railties (4.0.0) lib/rails/commands/server.rb:84:in start' railties (4.0.0) lib/rails/commands.rb:78:inblock in 'railties (4.0.0) lib/rails/commands.rb:73:in <top (required)>' railties (4.0.0) lib/rails/app_rails_loader.rb:43:inblock in exec_app_rails' railties (4.0.0) lib/rails/app_rails_loader.rb:32:in exec_app_rails' railties (4.0.0) lib/rails/cli.rb:6:in' railties (4.0.0) bin/rails:9:in <top (required)>' () home/user/.rvm/gems/ruby-2.3.0@project/bin/rails:23:in' () home/user/.rvm/gems/ruby-2.3.0@project/bin/ruby_executable_hooks:15:in `'

在我之前的版本中，路由文件是这样的：

 match '/signup'   => 'accounts#new', :plan => 'year'

升级后我改成：

get '/signup'   => 'accounts#new', :plan => 'year'

所有路由的“match”都替换为“get”。

这是我们使用inherited_resources 的accounts_controller。

class AccountsController < ApplicationController

  inherit_resources

  ssl_required :new, :create

  before_filter :authenticate_user!, :except => [:new, :create]

  ...................
end

我无法追踪为什么要使用它们，也无法在 Gemfile 中找到它。请帮我解决这个错误。

Answer 1

inherit_resources 旨在干掉使用 REST 约定的控制器。它是一个已弃用的 gem，并且不再在 Rails 4 中维护。inherit_resources 将基本上继承自 InheritedResources::Base，它具有预定义的 REST 方法。

相反，您可以像往常一样删除它并在控制器中定义路由：

class AccountsController < ApplicationController
  ssl_required :new, :create

  before_filter :authenticate_user!, :except => [:new, :create]

  def index
    @accounts = Accounts.all
  end

  def show
    @account = Account.find(params[:id])
  end

  def new
    @account = Account.new
  end

  def create
    @account = Account.new(account_params)
    if @account.save
      redirect_to @account
    else
      render 'new'
    end
  end

  def edit
    @account = Account.find(params[:id])
  end

  def update
    @account = Account.find(params[:id])
    if @account.update_attributes(account_params)
      flash[:notice] = "Successfully updated account!"
      redirect_to @account
    else
      render 'edit'
    end
  end

  def destroy
    @account = Account.find(params[:id])
    @account.destroy
    redirect_to accounts_path
  end

  private

    def account_params
      params.require(:account).permit(:name, :email, etc) # Look up strong params if you are unfamiliar. The name, email, etc. are going to be the only permitted params passed in the methods above as a safety feature so you have to permit the fields being created here.
    end

这是为了拥有“胖模型和瘦控制器”而将继承资源添加到控制器中的概述。您可以找到做类似事情的其他 gem，但在我看来，我宁愿自己添加这些方法以提高可读性。

编辑：它正在添加这些方法定义，但取决于您的应用程序将定义这些方法中的内容。这将是我最好的粗略猜测。 Rails 4 中的新功能也是添加了强大的参数。在创建和更新操作中，您会看到 account_params 从私有方法调用，而不是使用方法内的原始参数进行更新。