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路由错误未初始化的常量ArticleController rails应用程序
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Stack Overflow用户
提问于 2018-06-01 15:12:19
回答 1查看 1K关注 0票数 1

我是rails的新手,正在寻找一些帮助,我已经在转了一段时间了,当我运行本地主机时,我得到了以下错误:3000,Routing error uninitialized constant ArticleController,我一直在将routes.rb编辑为单数形式,但它似乎引起了更多问题

代码语言:javascript
复制
routes.rb

  Rails.application.routes.draw do
   resources :articles, :comments
    root 'articles#index'

    resources :people
    get   'entries/sign_in' => 'entries#sign_in'
    post  'entries/sign_in' => 'entries#sign_in'

    get 'assignment_2/index' => 'assignment#index'

 end

我的文章控制器如下所示

代码语言:javascript
复制
 article_controller

class ArticleController < ApplicationController
  def index
    @article = Article.page(params[:page]).per(25)
  end
  def update
    @article = Article.find(params[:id])
    if @article.update(params.require(:article).permit(:title, :company, :url))
      redirect_to root_path
    else
      render 'edit'
    end
  end
  def create
    @article = Article.new(params.require(:article).permit(:title, :company, :url))
    if @article.save
      redirect_to root_path
    else
      render 'new'
    end
  end
  def show
    @article = Article.page(params[:page]).per(25)
  end
  def new
    @article = Article.new
  end

end

实际的错误显示为

代码语言:javascript
复制
 NameError in ArticlesController#index
 uninitialized constant ArticlesController::Articles
 Extracted source (around line #3):

 1 class ArticlesController < ApplicationController
 2   def index
 3     @article = Articles.page(params[:page]).per(25)
 4   end
 5   def update
 6     @article = Articles.find(params[:id])


   Rails.root: C:/Users/markf/Desktop/School/RAD/RAD_Assignment_2_s9971085/Assignment_2_app
   Application Trace | Framework Trace | Full Trace

  app/controllers/articles_controller.rb:3:in `index'
  actionpack (5.1.6) lib/action_controller/metal/basic_implicit_render.rb:4:in `send_action'
  actionpack (5.1.6) lib/abstract_controller/base.rb:186:in `process_action'
  actionpack (5.1.6) lib/action_controller/metal/rendering.rb:30:in `process_action'
  actionpack (5.1.6) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
  activesupport (5.1.6) lib/active_support/callbacks.rb:131:in `run_callbacks'
  actionpack (5.1.6) lib/abstract_controller/callbacks.rb:19:in `process_action'
  actionpack (5.1.6) lib/action_controller/metal/rescue.rb:20:in `process_action'
  actionpack (5.1.6) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
  activesupport (5.1.6) lib/active_support/notifications.rb:166:in `block in instrument'
  activesupport (5.1.6) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
  activesupport (5.1.6) lib/active_support/notifications.rb:166:in `instrument'
  actionpack (5.1.6) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  actionpack (5.1.6) lib/action_controller/metal/params_wrapper.rb:252:in `process_action'
  activerecord (5.1.6) lib/active_record/railties/controller_runtime.rb:22:in `process_action'
  actionpack (5.1.6) lib/abstract_controller/base.rb:124:in `process'
  actionview (5.1.6) lib/action_view/rendering.rb:30:in `process'
  actionpack (5.1.6) lib/action_controller/metal.rb:189:in `dispatch'
  actionpack (5.1.6) lib/action_controller/metal.rb:253:in `dispatch'
  actionpack (5.1.6) lib/action_dispatch/routing/route_set.rb:49:in `dispatch'
  actionpack (5.1.6) lib/action_dispatch/routing/route_set.rb:31:in `serve'
  actionpack (5.1.6) lib/action_dispatch/journey/router.rb:50:in `block in serve'
  actionpack (5.1.6) lib/action_dispatch/journey/router.rb:33:in `each'
  actionpack (5.1.6) lib/action_dispatch/journey/router.rb:33:in `serve'
  actionpack (5.1.6) lib/action_dispatch/routing/route_set.rb:844:in `call'
  rack (2.0.5) lib/rack/etag.rb:25:in `call'
  rack (2.0.5) lib/rack/conditional_get.rb:25:in `call'
  rack (2.0.5) lib/rack/head.rb:12:in `call'
  rack (2.0.5) lib/rack/session/abstract/id.rb:232:in `context'
  rack (2.0.5) lib/rack/session/abstract/id.rb:226:in `call'
  actionpack (5.1.6) lib/action_dispatch/middleware/cookies.rb:613:in `call'
  activerecord (5.1.6) lib/active_record/migration.rb:556:in `call'
  actionpack (5.1.6) lib/action_dispatch/middleware/callbacks.rb:26:in `block in call'
  activesupport (5.1.6) lib/active_support/callbacks.rb:97:in `run_callbacks'
  actionpack (5.1.6) lib/action_dispatch/middleware/callbacks.rb:24:in `call'
  actionpack (5.1.6) lib/action_dispatch/middleware/executor.rb:12:in `call'
  actionpack (5.1.6) lib/action_dispatch/middleware/debug_exceptions.rb:59:in `call'
  web-console (3.6.2) lib/web_console/middleware.rb:135:in `call_app'
 web-console (3.6.2) lib/web_console/middleware.rb:30:in `block in call'
 web-console (3.6.2) lib/web_console/middleware.rb:20:in `catch'
 web-console (3.6.2) lib/web_console/middleware.rb:20:in `call'
  actionpack (5.1.6) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
 railties (5.1.6) lib/rails/rack/logger.rb:36:in `call_app'
 railties (5.1.6) lib/rails/rack/logger.rb:24:in `block in call'
 activesupport (5.1.6) lib/active_support/tagged_logging.rb:69:in `block in tagged'
 activesupport (5.1.6) lib/active_support/tagged_logging.rb:26:in `tagged'
 activesupport (5.1.6) lib/active_support/tagged_logging.rb:69:in `tagged'
  railties (5.1.6) lib/rails/rack/logger.rb:24:in `call'
  sprockets-rails (3.2.1) lib/sprockets/rails/quiet_assets.rb:13:in `call'
   actionpack (5.1.6) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
   actionpack (5.1.6) lib/action_dispatch/middleware/request_id.rb:25:in `call'
  rack (2.0.5) lib/rack/method_override.rb:22:in `call'
  rack (2.0.5) lib/rack/runtime.rb:22:in `call'
  activesupport (5.1.6) lib/active_support/cache/strategy/local_cache_middleware.rb:27:in `call'
  actionpack (5.1.6) lib/action_dispatch/middleware/executor.rb:12:in `call'
   actionpack (5.1.6) lib/action_dispatch/middleware/static.rb:125:in `call'
   rack (2.0.5) lib/rack/sendfile.rb:111:in `call'
  railties (5.1.6) lib/rails/engine.rb:522:in `call'
  puma (3.11.4) lib/puma/configuration.rb:225:in `call'
  puma (3.11.4) lib/puma/server.rb:632:in `handle_request'
 puma (3.11.4) lib/puma/server.rb:446:in `process_client'
  puma (3.11.4) lib/puma/server.rb:306:in `block in run'
 puma (3.11.4) lib/puma/thread_pool.rb:120:in `block in spawn_thread'

 Request

  Parameters:

  None

  Toggle session dump
 Toggle env dump
  Response

  Headers:

  None

上面是在我重命名articles_controller之前,现在错误消息显示如下

代码语言:javascript
复制
 ActionController::UnknownFormat in ArticlesController#index
 ArticlesController#index is missing a template for this request format        and variant. request.formats: ["text/html"] request.variant: [] NOTE! For XHR/Ajax or API requests, this action would normally respond with 204 No Content: an empty white screen. Since you're loading it in a web browser, we assume that you expected to actually render a template, not nothing, so we're showing an error to be extra-clear. If you expect 204 No Content, carry on. That's what you'll get from an XHR or API request. Give it a shot.

提取的源代码(在第53行附近):

代码语言:javascript
复制
 51
 52
 53
 54
 55
 56




           "That's what you'll get from an XHR or API request. Give it a shot."

         raise ActionController::UnknownFormat, message
        else
         logger.info "No template found for #{self.class.name}\##{action_name}, rendering head :no_content" if logger
         super

  Rails.root: C:/Users/markf/Desktop/School/RAD/RAD_Assignment_2_s9971085/Assignment_2_app

任何帮助都会非常感谢,就像我说的仍在学习中。

EN

回答 1

Stack Overflow用户

发布于 2018-06-01 15:43:42

您的控制器名称错误。

app/controllers/article_controller.rb重命名为app/controller/articles_controller.rb

将行class ArticleController < ApplicationController更改为

代码语言:javascript
复制
class ArticlesController < ApplicationController

此外,日志输出和articles_controller.rb文件之间也存在差异。

您应该使用Article而不是Articles

模型名称以单数形式使用,控制器名称以复数形式使用。

因此,控制器将为articles_controller,但模型将为Article

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/50637957

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