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如何恢復儀表板控制器和模型以修復損壞的rails_admin？

[英]How to restore dashboard controllers and model to fix broken rails_admin?

 原文  2017-01-25 04:34:17  4   2    ruby-on-rails/ rubygems/ rails-admin/ better-errors-gem

問題描述

這可能是一個非常棘手的問題，但我對rails很新，我正在開發我的第一個rails應用程序。

這一切都發生在無法創建儀表板功能時。 不知何故，所有儀表板控制器和模型都被刪除了，我正在努力恢復它們。 同樣，rails_admin已經受到影響，將不再有效。

我已經嘗試過bundle install，rake db：reset db：migrate仍然出現這個錯誤.. 

ERROR:  relation "dashboards" does not exist
LINE 8:                WHERE a.attrelid = '"dashboards"'::regclass

這是我們訪問/ admin管理員面板的測試 

require "rails_helper"

RSpec.feature "Visiting Admin Panel" do
  before do
    @Anag = User.create(first_name: "Anag", middle_initial: "A", last_name: "Avatar", email: "AnagAvatar@example.com", password: "Password", birthday: Date.new(1996), bio: "Lorem ipsum dolor sit amet, consectetur adipiscing elit. In vitae tincidunt orci. Quisque mauris
      tortor, dignissim ac dignissim ut, blandit eget risus. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam mollis augue vestibulum dui facilisis sollicitudin. Nullam sit amet mattis elit. Nulla volutpat elementum enim sed viverra. Cras ante dolor, commodo eu
      velit quis, sagittis egestas erat. Ut ac commodo mauris. Cras quis efficitur ipsum. Fusce fringilla felis ac lectus aliquet, quis dictum sapien posuere. Nunc iaculis lacinia augue, et hendrerit nibh mollis a. Sed sed dolor orci. Sed et turpis dictum, eleifend risus sit
      amet, ultricies eros. Vivamus finibus sapien mauris, a tincidunt nisi eleifend vitae. Maecenas libero sapien, pulvinar et turpis a, malesuada sodales justo.", occupation: "Avatar", motto: "motto motto motto", website_link: "https://en.wikipedia.org/wiki/Avatar:_The_Last_Airbender",
      hometown: "Air Temple, Western Air Temple",
      confirmed_at: DateTime.new(2017), admin: true)
    nfirmed_at: DateTime.new(2017))
  end

  scenario "with signed in user who's an admin" do
    login_as(@Anag)

    visit "admin"

    expect(current_path).to eq "/admin"

    expect(page).to have_content("Site Administration")

    first(:link, "Assignments").click

    expect(page).to have_content("List of Assignments")
  end
end

這是rspec測試結果 

Visiting Admin Panel with signed in user who's an admin
     Failure/Error: visit "admin"

     ActiveRecord::StatementInvalid:
       PG::UndefinedTable: ERROR:  relation "dashboards" does not exist
       LINE 8:                WHERE a.attrelid = '"dashboards"'::regclass
                                                 ^
       :               SELECT a.attname, format_type(a.atttypid, a.atttypmod),
                            pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod,
                    (SELECT c.collname FROM pg_collation c, pg_type t
                      WHERE c.oid = a.attcollation AND t.oid = a.atttypid AND a.attcollation <> t.typcollation),
                            col_description(a.attrelid, a.attnum) AS comment
                       FROM pg_attribute a LEFT JOIN pg_attrdef d
                         ON a.attrelid = d.adrelid AND a.attnum = d.adnum
                      WHERE a.attrelid = '"dashboards"'::regclass
                        AND a.attnum > 0 AND NOT a.attisdropped
                      ORDER BY a.attnum
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rails_admin-1.1.0/lib/rails_admin/adapters/active_record.rb:43:in `count'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rails_admin-1.1.0/lib/rails_admin/config/actions/dashboard.rb:26:in `block (3 levels) in <class:Dashboard>'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rails_admin-1.1.0/lib/rails_admin/config/actions/dashboard.rb:24:in `each'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rails_admin-1.1.0/lib/rails_admin/config/actions/dashboard.rb:24:in `block (2 levels) in <class:Dashboard>'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rails_admin-1.1.0/app/controllers/rails_admin/main_controller.rb:22:in `instance_eval'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rails_admin-1.1.0/app/controllers/rails_admin/main_controller.rb:22:in `dashboard'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/engine.rb:522:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/railtie.rb:193:in `public_send'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/railtie.rb:193:in `method_missing'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-pjax-1.0.0/lib/rack/pjax.rb:12:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/remotipart-1.3.1/lib/remotipart/middleware.rb:32:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/warden-1.2.6/lib/warden/manager.rb:35:in `block in call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/warden-1.2.6/lib/warden/manager.rb:34:in `catch'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/warden-1.2.6/lib/warden/manager.rb:34:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/etag.rb:25:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/conditional_get.rb:25:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/head.rb:12:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/session/abstract/id.rb:222:in `context'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/session/abstract/id.rb:216:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/rack/logger.rb:36:in `call_app'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/rack/logger.rb:24:in `block in call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/rack/logger.rb:24:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/method_override.rb:22:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/runtime.rb:22:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/sendfile.rb:111:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/engine.rb:522:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/urlmap.rb:68:in `block in call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/urlmap.rb:53:in `each'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-2.0.1/lib/rack/urlmap.rb:53:in `call'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-test-0.6.3/lib/rack/mock_session.rb:30:in `request'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-test-0.6.3/lib/rack/test.rb:244:in `process_request'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rack-test-0.6.3/lib/rack/test.rb:58:in `get'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/capybara-2.11.0/lib/capybara/rack_test/browser.rb:61:in `process'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/capybara-2.11.0/lib/capybara/rack_test/browser.rb:36:in `process_and_follow_redirects'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/capybara-2.11.0/lib/capybara/rack_test/browser.rb:22:in `visit'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/capybara-2.11.0/lib/capybara/rack_test/driver.rb:43:in `visit'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/capybara-2.11.0/lib/capybara/session.rb:246:in `visit'
     # /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/capybara-2.11.0/lib/capybara/dsl.rb:52:in `block (2 levels) in <module:DSL>'
     # ./spec/features/viewing_admin_panel_spec.rb:53:in `block (2 levels) in <top (required)>'
     # ------------------
     # --- Caused by: ---
     # PG::UndefinedTable:
     #   ERROR:  relation "dashboards" does not exist
     #   LINE 8:                WHERE a.attrelid = '"dashboards"'::regclass
     #                                             ^
     #   /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/rails_admin-1.1.0/lib/rails_admin/adapters/active_record.rb:43:in `count'

這是我們的寶石文件： 

source 'https://rubygems.org'

# Ruby 2.2.4
ruby '2.3.0'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.0.0', '>= 5.0.0.1'
# Use postgresql as the database for Active Record
gem 'pg', '~> 0.18'
gem 'puma', '~> 3.0'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.2'
gem 'jquery-rails'
    gem 'turbolinks', '~> 5'
https://github.com/rails/jbuilder
    gem 'jbuilder', '~> 2.5'

    # Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platform: :mri
  gem 'rspec-rails', '~> 3.4', '>= 3.4.2'
end

group :development do
  # Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
  gem 'web-console'
  gem 'listen', '~> 3.0.5'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'

  # Added Development gems
  gem 'better_errors'
  gem 'binding_of_caller' # For better_errors advanced features
  gem 'brakeman', require: false # Checking Security
  gem 'guard', '~> 2.14'
  gem 'guard-rspec', '~> 4.7', '>= 4.7.3'
  gem 'guard-cucumber', '~> 2.1', '>= 2.1.2'
end

group :test do
  # gem 'faker', '~> 1.6', '>= 1.6.3'
  # gem 'shoulda-matchers', '~> 3.1', '>= 3.1.1', require: false
  gem 'database_cleaner', '~> 1.5'
  gem 'simplecov', require: false
  gem 'capybara', '~> 2.7', '>= 2.7.1'
end

gem 'spring-commands-rspec', :groups => [:development, :test]
gem 'factory_girl_rails', :groups => [:development, :test]

# Added gems
gem 'rails_admin', '~> 1.0'
gem 'figaro'
gem 'slim-rails'

# Authentication
gem 'devise', '~> 4.2.0'

# Authorization
gem 'pundit', '~> 1.1'
gem 'geocoder', '~> 1.4.0'
# Forms
gem 'simple_form'
gem 'country_select'
gem 'mail_form', '~> 1.3.0'
gem 'kaminari', '~> 0.17.0'
gem 'carrierwave', '~> 0.11.2'
gem 'mini_magick', '~> 4.5.1'
gem 'fog-aws'
gem 'unf'
gem 'file_validators' # File Size Validations, May be out of date

# Debudding & Errors
gem 'rubocop', '~> 0.45.0', require: false

# SEO
gem 'meta-tags'
gem 'sitemap_generator'

# Cron jobs
gem 'whenever', require: false

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

這是我訪問localhost：3000 / admin時的服務器日志輸出 

Processing by RailsAdmin::MainController#dashboard as HTML
       (2.9ms)  SELECT COUNT(*) FROM "posts" WHERE "posts"."type" IN ('Announcement')
      Announcement Load (1.1ms)  SELECT  "posts".* FROM "posts" WHERE "posts"."type" IN ('Announcement') ORDER BY "posts"."created_at" ASC LIMIT $1  [["LIMIT", 1]]
       (3.5ms)  SELECT COUNT(*) FROM "assignments"
      Assignment Load (0.6ms)  SELECT  "assignments".* FROM "assignments" ORDER BY "assignments"."id" DESC LIMIT $1  [["LIMIT", 1]]
       (0.9ms)  SELECT COUNT(*) FROM "categories"
       (0.7ms)  SELECT COUNT(*) FROM "comments"
      Comment Load (0.5ms)  SELECT  "comments".* FROM "comments" ORDER BY "comments"."created_at" ASC LIMIT $1  [["LIMIT", 1]]
       (0.8ms)  SELECT COUNT(*) FROM "posts" WHERE "posts"."type" IN ('Coupon')
      Coupon Load (0.8ms)  SELECT  "posts".* FROM "posts" WHERE "posts"."type" IN ('Coupon') ORDER BY "posts"."created_at" ASC LIMIT $1  [["LIMIT", 1]]
    Completed 500 Internal Server Error in 614ms (ActiveRecord: 42.8ms)


    DEPRECATION WARNING: #original_exception is deprecated. Use #cause instead. (called from initialize at /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/better_errors-2.1.1/lib/better_errors/raised_exception.rb:7)
    DEPRECATION WARNING: #original_exception is deprecated. Use #cause instead. (called from initialize at /Users/MarcusKA/.rvm/gems/ruby-2.3.0/gems/better_errors-2.1.1/lib/better_errors/raised_exception.rb:8)

    PG::UndefinedTable - ERROR:  relation "dashboards" does not exist
    LINE 8:                WHERE a.attrelid = '"dashboards"'::regclass
                                              ^
    :
      activerecord (5.0.0.1) lib/active_record/connection_adapters/postgresql/database_statements.rb:88:in `block in query'
      activerecord (5.0.0.1) lib/active_record/connection_adapters/abstract_adapter.rb:566:in `block in log'
      activesupport (5.0.0.1) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
      activerecord (5.0.0.1) lib/active_record/connection_adapters/abstract_adapter.rb:560:in `log'
      activerecord (5.0.0.1) lib/active_record/connection_adapters/postgresql/database_statements.rb:87:in `query'
      activerecord (5.0.0.1) lib/active_record/connection_adapters/postgresql_adapter.rb:739:in `column_definitions'
      activerecord (5.0.0.1) lib/active_record/connection_adapters/postgresql/schema_statements.rb:227:in `columns'
      activerecord (5.0.0.1) lib/active_record/connection_adapters/schema_cache.rb:56:in `columns'
      activerecord (5.0.0.1) lib/active_record/connection_adapters/schema_cache.rb:62:in `columns_hash'
      activerecord (5.0.0.1) lib/active_record/model_schema.rb:354:in `load_schema!'
      activerecord (5.0.0.1) lib/active_record/attributes.rb:233:in `load_schema!'
      activerecord (5.0.0.1) lib/active_record/attribute_decorators.rb:28:in `load_schema!'
      activerecord (5.0.0.1) lib/active_record/model_schema.rb:349:in `load_schema'
      activerecord (5.0.0.1) lib/active_record/model_schema.rb:261:in `columns'
      activerecord (5.0.0.1) lib/active_record/model_schema.rb:298:in `column_names'
      activerecord (5.0.0.1) lib/active_record/relation/calculations.rb:216:in `aggregate_column'
      activerecord (5.0.0.1) lib/active_record/relation/calculations.rb:239:in `execute_simple_calculation'
      activerecord (5.0.0.1) lib/active_record/relation/calculations.rb:209:in `perform_calculation'
      activerecord (5.0.0.1) lib/active_record/relation/calculations.rb:118:in `calculate'
      activerecord (5.0.0.1) lib/active_record/relation/calculations.rb:40:in `count'
      rails_admin (1.1.0) lib/rails_admin/adapters/active_record.rb:43:in `count'
      rails_admin (1.1.0) lib/rails_admin/config/actions/dashboard.rb:26:in `block (3 levels) in <class:Dashboard>'
      rails_admin (1.1.0) lib/rails_admin/config/actions/dashboard.rb:24:in `block (2 levels) in <class:Dashboard>'
      rails_admin (1.1.0) app/controllers/rails_admin/main_controller.rb:22:in `dashboard'
      actionpack (5.0.0.1) lib/action_controller/metal/basic_implicit_render.rb:4:in `send_action'
      actionpack (5.0.0.1) lib/abstract_controller/base.rb:188:in `process_action'
      actionpack (5.0.0.1) lib/action_controller/metal/rendering.rb:30:in `process_action'
      actionpack (5.0.0.1) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
      activesupport (5.0.0.1) lib/active_support/callbacks.rb:126:in `call'
      activesupport (5.0.0.1) lib/active_support/callbacks.rb:506:in `block (2 levels) in compile'
      activesupport (5.0.0.1) lib/active_support/callbacks.rb:455:in `call'
      activesupport (5.0.0.1) lib/active_support/callbacks.rb:101:in `__run_callbacks__'
      activesupport (5.0.0.1) lib/active_support/callbacks.rb:750:in `_run_process_action_callbacks'
      activesupport (5.0.0.1) lib/active_support/callbacks.rb:90:in `run_callbacks'
      actionpack (5.0.0.1) lib/abstract_controller/callbacks.rb:19:in `process_action'
      actionpack (5.0.0.1) lib/action_controller/metal/rescue.rb:20:in `process_action'
      actionpack (5.0.0.1) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
      activesupport (5.0.0.1) lib/active_support/notifications.rb:164:in `block in instrument'
      activesupport (5.0.0.1) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
      activesupport (5.0.0.1) lib/active_support/notifications.rb:164:in `instrument'
      actionpack (5.0.0.1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
      actionpack (5.0.0.1) lib/action_controller/metal/params_wrapper.rb:248:in `process_action'
      activerecord (5.0.0.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
      actionpack (5.0.0.1) lib/abstract_controller/base.rb:126:in `process'
      actionview (5.0.0.1) lib/action_view/rendering.rb:30:in `process'
      actionpack (5.0.0.1) lib/action_controller/metal.rb:190:in `dispatch'
      actionpack (5.0.0.1) lib/action_controller/metal.rb:262:in `dispatch'
      actionpack (5.0.0.1) lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
      actionpack (5.0.0.1) lib/action_dispatch/routing/route_set.rb:32:in `serve'
      actionpack (5.0.0.1) lib/action_dispatch/journey/router.rb:39:in `block in serve'
      actionpack (5.0.0.1) lib/action_dispatch/journey/router.rb:26:in `serve'
      actionpack (5.0.0.1) lib/action_dispatch/routing/route_set.rb:725:in `call'
      railties (5.0.0.1) lib/rails/engine.rb:522:in `call'
      railties (5.0.0.1) lib/rails/railtie.rb:193:in `method_missing'
      actionpack (5.0.0.1) lib/action_dispatch/routing/mapper.rb:17:in `block in <class:Constraints>'
      actionpack (5.0.0.1) lib/action_dispatch/routing/mapper.rb:46:in `serve'
      actionpack (5.0.0.1) lib/action_dispatch/journey/router.rb:39:in `block in serve'
      actionpack (5.0.0.1) lib/action_dispatch/journey/router.rb:26:in `serve'
      actionpack (5.0.0.1) lib/action_dispatch/routing/route_set.rb:725:in `call'
      rack-pjax (1.0.0) lib/rack/pjax.rb:12:in `call'
      remotipart (1.3.1) lib/remotipart/middleware.rb:32:in `call'
      warden (1.2.6) lib/warden/manager.rb:35:in `block in call'
      warden (1.2.6) lib/warden/manager.rb:34:in `call'
      rack (2.0.1) lib/rack/etag.rb:25:in `call'
      rack (2.0.1) lib/rack/conditional_get.rb:25:in `call'
      rack (2.0.1) lib/rack/head.rb:12:in `call'
      rack (2.0.1) lib/rack/session/abstract/id.rb:222:in `context'
      rack (2.0.1) lib/rack/session/abstract/id.rb:216:in `call'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/cookies.rb:613:in `call'
      activerecord (5.0.0.1) lib/active_record/migration.rb:552:in `call'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call'
      activesupport (5.0.0.1) lib/active_support/callbacks.rb:97:in `__run_callbacks__'
      activesupport (5.0.0.1) lib/active_support/callbacks.rb:750:in `_run_call_callbacks'
      activesupport (5.0.0.1) lib/active_support/callbacks.rb:90:in `run_callbacks'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/callbacks.rb:36:in `call'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/executor.rb:12:in `call'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/remote_ip.rb:79: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:in `call'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call'
      web-console (3.4.0) lib/web_console/middleware.rb:135:in `call_app'
      web-console (3.4.0) lib/web_console/middleware.rb:28:in `block in call'
      web-console (3.4.0) lib/web_console/middleware.rb:18:in `call'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
      railties (5.0.0.1) lib/rails/rack/logger.rb:36:in `call_app'
      railties (5.0.0.1) lib/rails/rack/logger.rb:24:in `block in call'
      activesupport (5.0.0.1) lib/active_support/tagged_logging.rb:70:in `block in tagged'
      activesupport (5.0.0.1) lib/active_support/tagged_logging.rb:26:in `tagged'
      activesupport (5.0.0.1) lib/active_support/tagged_logging.rb:70:in `tagged'
      railties (5.0.0.1) lib/rails/rack/logger.rb:24:in `call'
      sprockets-rails (3.2.0) lib/sprockets/rails/quiet_assets.rb:13:in `call'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/request_id.rb:24:in `call'
      rack (2.0.1) lib/rack/method_override.rb:22:in `call'
      rack (2.0.1) lib/rack/runtime.rb:22:in `call'
      activesupport (5.0.0.1) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/executor.rb:12:in `call'
      actionpack (5.0.0.1) lib/action_dispatch/middleware/static.rb:136:in `call'
      rack (2.0.1) lib/rack/sendfile.rb:111:in `call'
      railties (5.0.0.1) lib/rails/engine.rb:522:in `call'
      puma (3.6.0) lib/puma/configuration.rb:225:in `call'
      puma (3.6.0) lib/puma/server.rb:578:in `handle_request'
      puma (3.6.0) lib/puma/server.rb:415:in `process_client'
      puma (3.6.0) lib/puma/server.rb:275:in `block in run'
      puma (3.6.0) lib/puma/thread_pool.rb:116:in `block in spawn_thread'

    Started POST "/admin/__better_errors/d8e9adcf6cf62efb/variables" for ::1 at 2017-01-24 23:16:58 -0500

這是我們的儀表板模型。 

class Dashboard < ApplicationRecord

end

這是我們的架構。 

ActiveRecord::Schema.define(version: 20170116124600) do

  # These are extensions that must be enabled in order to support this database
  enable_extension "plpgsql"

  create_table "assignments", force: :cascade do |t|
    t.integer  "store_id"
    t.integer  "category_id"
    t.datetime "created_at",  null: false
    t.datetime "updated_at",  null: false
    t.index ["category_id"], name: "index_assignments_on_category_id", using: :btree
    t.index ["store_id"], name: "index_assignments_on_store_id", using: :btree
  end

  create_table "categories", force: :cascade do |t|
    t.string "name"
    t.string "description"
  end

  create_table "comments", force: :cascade do |t|
    t.text     "content"
    t.integer  "post_id"
    t.integer  "user_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.index ["post_id"], name: "index_comments_on_post_id", using: :btree
    t.index ["user_id"], name: "index_comments_on_user_id", using: :btree
  end

  create_table "follows", force: :cascade do |t|
    t.integer  "follower_id"
    t.integer  "followed_id"
    t.datetime "created_at",  null: false
    t.datetime "updated_at",  null: false
    t.index ["followed_id"], name: "index_follows_on_followed_id", using: :btree
    t.index ["follower_id", "followed_id"], name: "index_follows_on_follower_id_and_followed_id", unique: true, using: :btree
    t.index ["follower_id"], name: "index_follows_on_follower_id", using: :btree
  end

  create_table "friendships", force: :cascade do |t|
    t.integer  "user_id"
    t.integer  "friend_id"
    t.boolean  "accepted",   default: false
    t.datetime "created_at",                 null: false
    t.datetime "updated_at",                 null: false
    t.index ["user_id", "friend_id"], name: "index_friendships_on_user_id_and_friend_id", unique: true, using: :btree
  end

  create_table "posts", force: :cascade do |t|
    t.string   "title"
    t.text     "content"
    t.string   "image"
    t.integer  "store_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.string   "type"
    t.datetime "start"
    t.datetime "end"
    t.string   "info"
    t.string   "info2"
    t.string   "link"
    t.index ["store_id", "created_at"], name: "index_posts_on_store_id_and_created_at", unique: true, using: :btree
  end

  create_table "reviews", force: :cascade do |t|
    t.string   "title"
    t.text     "review_text"
    t.integer  "rating"
    t.datetime "created_at",  null: false
    t.datetime "updated_at",  null: false
    t.integer  "user_id"
    t.integer  "store_id"
    t.index ["store_id"], name: "index_reviews_on_store_id", using: :btree
    t.index ["user_id"], name: "index_reviews_on_user_id", using: :btree
  end

  create_table "searches", force: :cascade do |t|
    t.string   "keywords"
    t.string   "category"
    t.integer  "min_price"
    t.integer  "max_price"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
  end

  create_table "stores", force: :cascade do |t|
    t.string   "store_name"
    t.string   "company_name"
    t.string   "image"
    t.string   "email"
    t.string   "store_link"
    t.integer  "price_rating",       default: 0
    t.string   "contact_number"
    t.string   "contact_number_int"
    t.string   "contact_email"
    t.string   "contact_form_link"
    t.string   "feedback_email"
    t.string   "slogan"
    t.string   "address1"
    t.string   "address2"
    t.string   "city"
    t.string   "state"
    t.string   "zipcode"
    t.string   "country",            default: "USA"
    t.string   "founded_date"
    t.text     "short_description"
    t.text     "long_description"
    t.string   "facebook_link"
    t.string   "twitter_link"
    t.string   "instagram_link"
    t.string   "google_plus_link"
    t.string   "pinterest_link"
    t.float    "latitude"
    t.float    "longitude"
    t.datetime "created_at",                         null: false
    t.datetime "updated_at",                         null: false
    t.integer  "reviews_id"
    t.string   "shipping"
    t.index ["reviews_id"], name: "index_stores_on_reviews_id", using: :btree
  end

  create_table "users", force: :cascade do |t|
    t.string   "email",                  default: "",    null: false
    t.string   "encrypted_password",     default: "",    null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",          default: 0,     null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.inet     "current_sign_in_ip"
    t.inet     "last_sign_in_ip"
    t.string   "confirmation_token"
    t.datetime "confirmed_at"
    t.datetime "confirmation_sent_at"
    t.string   "unconfirmed_email"
    t.datetime "created_at",                             null: false
    t.datetime "updated_at",                             null: false
    t.string   "first_name"
    t.string   "middle_initial"
    t.string   "last_name"
    t.date     "birthday"
    t.text     "bio"
    t.string   "occupation"
    t.string   "motto"
    t.string   "website_link"
    t.string   "hometown"
    t.boolean  "is_male",                default: true
    t.integer  "reviews_id"
    t.boolean  "admin",                  default: false
    t.string   "avatar"
    t.integer  "store_id"
    t.index ["email"], name: "index_users_on_email", unique: true, using: :btree
    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true, using: :btree
    t.index ["reviews_id"], name: "index_users_on_reviews_id", using: :btree
    t.index ["store_id"], name: "index_users_on_store_id", using: :btree
  end

  add_foreign_key "comments", "posts"
  add_foreign_key "comments", "users"
  add_foreign_key "posts", "stores"
  add_foreign_key "stores", "reviews", column: "reviews_id"
  add_foreign_key "users", "reviews", column: "reviews_id"
end

我相信這是必須手動重新創建的空模型。 是否有任何方法可以再次為rails_admin生成所需的儀表板模型和遷移，因為它們已被刪除或覆蓋？ 如果需要更多信息，請告訴我。

2 個解決方案

解決方案1
 0  2017-01-25 05:08:26

它說儀表板表不存在。 運行遷移以創建儀表板表

解決方案2
 0  2017-01-25 19:17:52

我修好了它。 我刪除了手動創建的dashboard.rb並重新安裝了rails_admin。 然后我重新啟動了服務器，所有測試都通過了。

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