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我正在使用 Ruby On Rails 和 Devise 创建一个应用程序。我已经创建了一个用户模型和一个管理员模型，当我在本地运行它时，我的应用程序运行良好，但是当我在 heroku 上运行它时，我遇到了问题。问题是当我尝试创建一个新管理员时，我会看到一条错误消息，上面写着“我们很抱歉，但出了点问题”。我已经完成了 rake db:migrate 和 heroku run rake db:migrate。当我检查 heroku 日志时，我看到了这个：

2013-04-08T19:34:49+00:00 app[web.1]: Started GET "/admins/sign_up" for 98.154.183.5 at 2013-04-08 19:34:49 +0000
2013-04-08T19:34:49+00:00 app[web.1]: Processing by Admins::RegistrationsController#new as HTML
2013-04-08T19:34:50+00:00 app[web.1]:   Rendered devise/registrations/new.html.erb within layouts/application (431.3ms)
2013-04-08T19:34:50+00:00 app[web.1]: ActionView::Template::Error (undefined method `name' for #<Admin:0x00000005207678>):
2013-04-08T19:34:50+00:00 app[web.1]: Completed 500 Internal Server Error in 549ms
2013-04-08T19:34:50+00:00 app[web.1]: 
2013-04-08T19:34:50+00:00 app[web.1]:     3: <%= simple_form_for(resource, :as => resource_name, :url => registration_path(resource_name), :html => { class: 'form-horizontal'}) do |f| %>
2013-04-08T19:34:50+00:00 app[web.1]:     4:     <%= f.error_notification %>
2013-04-08T19:34:50+00:00 app[web.1]:     5: 
2013-04-08T19:34:50+00:00 app[web.1]:     6:     <%= f.input :name %>
2013-04-08T19:34:50+00:00 app[web.1]:     8:     <%= f.input :password %>
2013-04-08T19:34:50+00:00 app[web.1]:   app/views/devise/registrations/new.html.erb:6:in `block in _app_views_devise_registrations_new_html_erb___3397140481100313441_30072880'
2013-04-08T19:34:50+00:00 app[web.1]:   app/views/devise/registrations/new.html.erb:3:in `_app_views_devise_registrations_new_html_erb___3397140481100313441_30072880'
2013-04-08T19:34:50+00:00 app[web.1]:     7:     <%= f.input :email %>
2013-04-08T19:34:50+00:00 app[web.1]:     9:     <%= f.input :password_confirmation %>
2013-04-08T19:34:50+00:00 app[web.1]: 
2013-04-08T19:34:50+00:00 app[web.1]: 
2013-04-08T19:34:50+00:00 heroku[router]: at=info method=GET path=/admins/sign_up host=protected-cliffs-2228.herokuapp.com fwd="98.154.183.5" dyno=web.1 connect=1ms service=559ms status=500 bytes=643

出于某种我不知道的原因，heroku 没有链接到 admins/registrations/new.html.erb，而是链接到 devise/registrations/new.html.erb，它正在读取显示为未定义方法的“名称”属性错误。

我的 controllers/admins/registrations_controller.rb 文件如下所示：

class Admins::RegistrationsController < Devise::RegistrationsController

end

我的 routes.rb 文件如下所示：

MyFirstApp::Application.routes.draw do
  get "users/show"

  devise_for :admins, :controllers => { :registrations => "admins/registrations", :sessions => "admins/sessions" } do
    get   "/admins/sign_up" => "admins/registrations#new"
    get   "/admins/sign_in" => "admins/sessions#new"
  end

  resources :posts


  devise_for :users
  match 'users/:id' => 'users#show'


  root :to => 'pages#home'
  get 'about' => 'pages#about'

end

我的 development.rb 文件

MyFirstApp::Application.configure do
  # Settings specified here will take precedence over those in config/application.rb

  # In the development environment your application's code is reloaded on
  # every request. This slows down response time but is perfect for development
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = false

  # Log error messages when you accidentally call methods on nil.
  config.whiny_nils = true

  # Show full error reports and disable caching
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false

  # Don't care if the mailer can't send
  config.action_mailer.raise_delivery_errors = false

  # Print deprecation notices to the Rails logger
  config.active_support.deprecation = :log

  # Only use best-standards-support built into browsers
  config.action_dispatch.best_standards_support = :builtin

  # Raise exception on mass assignment protection for Active Record models
  config.active_record.mass_assignment_sanitizer = :strict

  # Log the query plan for queries taking more than this (works
  # with SQLite, MySQL, and PostgreSQL)
  config.active_record.auto_explain_threshold_in_seconds = 0.5

  # Do not compress assets
  config.assets.compress = false

  # Expands the lines which load the assets
  config.assets.debug = true

  config.action_mailer.default_url_options = { :host => 'localhost:3000' }
end

我的 production.rb 文件

MyFirstApp::Application.configure do
  # Settings specified here will take precedence over those in config/application.rb

  # Code is not reloaded between requests
  config.cache_classes = true

  # Full error reports are disabled and caching is turned on
  config.consider_all_requests_local       = false
  config.action_controller.perform_caching = true

  # Disable Rails's static asset server (Apache or nginx will already do this)
  config.serve_static_assets = false

  # Compress JavaScripts and CSS
  config.assets.compress = true

  # Don't fallback to assets pipeline if a precompiled asset is missed
  config.assets.compile = false

  # Generate digests for assets URLs
  config.assets.digest = true

  # Defaults to nil and saved in location specified by config.assets.prefix
  # config.assets.manifest = YOUR_PATH

  # Specifies the header that your server uses for sending files
  # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache
  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx

  # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
  # config.force_ssl = true

  # See everything in the log (default is :info)
  # config.log_level = :debug

  # Prepend all log lines with the following tags
  # config.log_tags = [ :subdomain, :uuid ]

  # Use a different logger for distributed setups
  # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)

  # Use a different cache store in production
  # config.cache_store = :mem_cache_store

  # Enable serving of images, stylesheets, and JavaScripts from an asset server
  # config.action_controller.asset_host = "http://assets.example.com"

  # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)
  # config.assets.precompile += %w( search.js )

  # Disable delivery errors, bad email addresses will be ignored
  # config.action_mailer.raise_delivery_errors = false

  # Enable threaded mode
  # config.threadsafe!

  # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
  # the I18n.default_locale when a translation can not be found)
  config.i18n.fallbacks = true

  # Send deprecation notices to registered listeners
  config.active_support.deprecation = :notify

  # Log the query plan for queries taking more than this (works
  # with SQLite, MySQL, and PostgreSQL)
  # config.active_record.auto_explain_threshold_in_seconds = 0.5

  #In production, :host should be set to the actual host of your application.
  config.action_mailer.default_url_options = { :host => 'myfirstapp.heroku.com' }

  #Configuring Amazon S3 for Paperclip file uploads
  config.paperclip_defaults = {
    :storage => :s3,
    :s3_credentials => {
      :bucket => ENV['AWS_BUCKET'],
      :access_key_id => ENV['AWS_ACCESS_KEY_ID'],
      :secret_access_key => ENV['AWS_SECRET_ACCESS_KEY']
    }
  }
end

我的 .gitignore 文件

# See http://help.github.com/ignore-files/ for more about ignoring files.
#
# If you find yourself ignoring temporary files generated by your text editor
# or operating system, you probably want to add a global ignore instead:
#   git config --global core.excludesfile ~/.gitignore_global

# Ignore bundler config
/.bundle

# Ignore the default SQLite database.
/db/*.sqlite3

# Ignore all logfiles and tempfiles.
/log/*.log
/tmp
doc/
*.swp
*~
.project
.DS_Store
.idea

# Ignore Paperclip unloaded files
/public/system

我会很感激我能得到的任何帮助！这是我第一次创建应用程序，所以如果我的问题很愚蠢，我很抱歉，但我被卡住了，我需要一些帮助！

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1 回答 1

0

首先检查您的 gitrepo 以确保该文件或相关文件由于某种原因已被忽略。

如果这不是问题，那么只需核对 heroku 项目并重新开始。

Heroku 有一种特殊的方式，有时无法正确创建新的存储库/项目。失败率很小，但你可能只是翻了个白眼。

如果这不起作用，请发布您的 production.rb 和 development.rb。

于 2013-04-08T20:22:04.167 回答