Rails 2.3.18から3.2.21にアップグレードしました。アクティブレコードクエリーで「メソッドなし」with_connection '」エラーが発生しました

Question

レール2.3.18に組み込まれて実行中のWebアプリケーションのエッジルビーとレールの更新を実行中ですルビ1.9.3。

私は徐々にレールバージョンを更新し、ブレークを修正しており、物事は順調に進んでいます。私は3.2.21のレールを走らせています。最初のルビーを2.0.0-p648にアップデートしました。

オンラインでこのエラーに関する何かを見つけることができないので、ここで病気が悪いと思っています。あらかじめThx。

これは、このエラーをトリガーするコントローラの行です。これは私のコードではないことに留意してください。私は8歳のシステムを更新しています。

@blogs = WpPosts.where(post_status: 'publish').order(post_date: :desc).limit(3) 

undefined method `with_connection' for #<ActiveRecord::ConnectionAdapters::Mysql2Adapter:0x007fc08067ae60> 

このエラーは

WpPosts.all 

Imが使用してデータベースMySQLとイムは、アダプタとmysql2の宝石を使用しているなど、任意のアクティブなレコードの呼び出しで発生させることができます。ここに私のgemfileがあります。

source 'http://rubygems.org' 

gem 'rails', '3.2.21' 

gem 'bigdecimal',     '1.1.0' 
gem 'business_time' 
gem 'calendar_date_select',  '2.0.0' 
gem 'gibbon',      '1.1.3' 
gem 'holidays' 
gem 'httparty',     '0.13.1' 
gem 'io-console',     '0.3' 
gem 'json',      '1.8.1' 
gem 'mini_portile',    '0.5.0' 
gem 'minitest',     '5.3.4' 
gem 'multi_json',     '1.10.1' 
gem 'multi_xml',     '0.5.5' 
gem 'journey' 

gem 'mysql2',      '~> 0.3.21' 

gem 'nokogiri',     '1.6.1' 
gem 'parseexcel',     '0.5.2' 
gem "iconv",      "~> 1.0.3" 
gem 'pdf-core',     '0.6.1' 
gem 'pdfkit',      '0.8.2' 

gem 'rubyzip',      '1.1.6' 
gem 'rufus-scheduler',    '3.0.9' 
gem 'sanitize',     '2.1.0' 
gem 'saxerator',     '0.9.4' 
# TODO address ssl_requirement error 
# gem 'ssl_requirement',    '0.1.0' 
gem 'thread_safe',     '0.3.3' 
gem 'ttfunk',      '1.4.0' 
gem 'tzinfo',      '0.3.29' 
gem 'will_paginate' 
gem 'wkhtmltopdf-binary',   '0.9.9.3' 
gem 'rails_legacy_mapper' 

group :development do 
    gem 'pry-rails' 
end 

# Needed for the new asset pipeline 
group :assets do 
    gem 'sass-rails', '~> 3.2.6' 
    # gem 'coffee-rails', '~> 3.2.2' 
    gem 'uglifier',  '>= 1.0.3' 
end 

# jQuery is the default JavaScript library in Rails 3.1 
# gem 'jquery-rails' 

この段階では、次のエラーが発生します。ここで

undefined method `with_connection' for #<ActiveRecord::ConnectionAdapters::Mysql2Adapter:0x007fc08067ae60> 

は、現在のバージョンは非常に若い一つですので、あなたはおそらく、あなたのmysql2宝石をダウングレードする必要がスタックトレース

undefined method `with_connection' for #<ActiveRecord::ConnectionAdapters::Mysql2Adapter:0x007fc08067ae60> 


    arel (2.2.3) lib/arel/visitors/to_sql.rb:16:in `accept' 
arel (2.2.3) lib/arel/visitors/bind_visitor.rb:11:in `accept' 
activerecord (3.2.21) lib/active_record/connection_adapters/abstract/database_statements.rb:7:in `to_sql' 
activerecord (3.2.21) lib/active_record/connection_adapters/abstract/database_statements.rb:18:in `select_all' 
activerecord (3.2.21) lib/active_record/connection_adapters/abstract/query_cache.rb:63:in `select_all' 
activerecord (3.2.21) lib/active_record/querying.rb:38:in `block in find_by_sql' 
activerecord (3.2.21) lib/active_record/explain.rb:41:in `logging_query_plan' 
activerecord (3.2.21) lib/active_record/querying.rb:37:in `find_by_sql' 
activerecord (3.2.21) lib/active_record/relation.rb:171:in `exec_queries' 
activerecord (3.2.21) lib/active_record/relation.rb:160:in `block in to_a' 
activerecord (3.2.21) lib/active_record/explain.rb:41:in `logging_query_plan' 
activerecord (3.2.21) lib/active_record/relation.rb:159:in `to_a' 
activerecord (3.2.21) lib/active_record/relation/finder_methods.rb:381:in `find_first' 
activerecord (3.2.21) lib/active_record/relation/finder_methods.rb:122:in `first' 
app/views/default/start.html.erb:246:in `_app_views_default_start_html_erb__1835693497152716952_70232382243240' 
actionpack (3.2.21) lib/action_view/template.rb:145:in `block in render' 
activesupport (3.2.21) lib/active_support/notifications.rb:125:in `instrument' 
actionpack (3.2.21) lib/action_view/template.rb:143:in `render' 
actionpack (3.2.21) lib/action_view/renderer/template_renderer.rb:47:in `block (2 levels) in render_template' 
actionpack (3.2.21) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument' 
activesupport (3.2.21) lib/active_support/notifications.rb:123:in `block in instrument' 
activesupport (3.2.21) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (3.2.21) lib/active_support/notifications.rb:123:in `instrument' 
actionpack (3.2.21) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument' 
actionpack (3.2.21) lib/action_view/renderer/template_renderer.rb:46:in `block in render_template' 
actionpack (3.2.21) lib/action_view/renderer/template_renderer.rb:54:in `render_with_layout' 
actionpack (3.2.21) lib/action_view/renderer/template_renderer.rb:45:in `render_template' 
actionpack (3.2.21) lib/action_view/renderer/template_renderer.rb:18:in `render' 
actionpack (3.2.21) lib/action_view/renderer/renderer.rb:36:in `render_template' 
actionpack (3.2.21) lib/action_view/renderer/renderer.rb:17:in `render' 
actionpack (3.2.21) lib/abstract_controller/rendering.rb:110:in `_render_template' 
actionpack (3.2.21) lib/action_controller/metal/streaming.rb:225:in `_render_template' 
actionpack (3.2.21) lib/abstract_controller/rendering.rb:103:in `render_to_body' 
actionpack (3.2.21) lib/action_controller/metal/renderers.rb:28:in `render_to_body' 
actionpack (3.2.21) lib/action_controller/metal/compatibility.rb:50:in `render_to_body' 
actionpack (3.2.21) lib/abstract_controller/rendering.rb:88:in `render' 
actionpack (3.2.21) lib/action_controller/metal/rendering.rb:16:in `render' 
actionpack (3.2.21) lib/action_controller/metal/instrumentation.rb:40:in `block (2 levels) in render' 
activesupport (3.2.21) lib/active_support/core_ext/benchmark.rb:5:in `block in ms' 
/Users/sidylife/.rbenv/versions/2.0.0-p648/lib/ruby/2.0.0/benchmark.rb:296:in `realtime' 
activesupport (3.2.21) lib/active_support/core_ext/benchmark.rb:5:in `ms' 
actionpack (3.2.21) lib/action_controller/metal/instrumentation.rb:40:in `block in render' 
actionpack (3.2.21) lib/action_controller/metal/instrumentation.rb:83:in `cleanup_view_runtime' 
activerecord (3.2.21) lib/active_record/railties/controller_runtime.rb:24:in `cleanup_view_runtime' 
actionpack (3.2.21) lib/action_controller/metal/instrumentation.rb:39:in `render' 
actionpack (3.2.21) lib/action_controller/metal/implicit_render.rb:10:in `default_render' 
actionpack (3.2.21) lib/action_controller/metal/implicit_render.rb:5:in `send_action' 
actionpack (3.2.21) lib/abstract_controller/base.rb:167:in `process_action' 
actionpack (3.2.21) lib/action_controller/metal/rendering.rb:10:in `process_action' 
actionpack (3.2.21) lib/abstract_controller/callbacks.rb:18:in `block in process_action' 
activesupport (3.2.21) lib/active_support/callbacks.rb:403:in `_run__838951966072540285__process_action__2683730459786019710__callbacks' 
activesupport (3.2.21) lib/active_support/callbacks.rb:405:in `__run_callback' 
activesupport (3.2.21) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks' 
activesupport (3.2.21) lib/active_support/callbacks.rb:81:in `run_callbacks' 
actionpack (3.2.21) lib/abstract_controller/callbacks.rb:17:in `process_action' 
actionpack (3.2.21) lib/action_controller/metal/rescue.rb:29:in `process_action' 
actionpack (3.2.21) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action' 
activesupport (3.2.21) lib/active_support/notifications.rb:123:in `block in instrument' 
activesupport (3.2.21) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (3.2.21) lib/active_support/notifications.rb:123:in `instrument' 
actionpack (3.2.21) lib/action_controller/metal/instrumentation.rb:29:in `process_action' 
actionpack (3.2.21) lib/action_controller/metal/params_wrapper.rb:207:in `process_action' 
activerecord (3.2.21) lib/active_record/railties/controller_runtime.rb:18:in `process_action' 
actionpack (3.2.21) lib/abstract_controller/base.rb:121:in `process' 
actionpack (3.2.21) lib/abstract_controller/rendering.rb:45:in `process' 
actionpack (3.2.21) lib/action_controller/metal.rb:203:in `dispatch' 
actionpack (3.2.21) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch' 
actionpack (3.2.21) lib/action_controller/metal.rb:246:in `block in action' 
actionpack (3.2.21) lib/action_dispatch/routing/route_set.rb:73:in `call' 
actionpack (3.2.21) lib/action_dispatch/routing/route_set.rb:73:in `dispatch' 
actionpack (3.2.21) lib/action_dispatch/routing/route_set.rb:36:in `call' 
journey (1.0.4) lib/journey/router.rb:68:in `block in call' 
journey (1.0.4) lib/journey/router.rb:56:in `each' 
journey (1.0.4) lib/journey/router.rb:56:in `call' 
actionpack (3.2.21) lib/action_dispatch/routing/route_set.rb:608:in `call' 
pdfkit (0.8.2) lib/pdfkit/middleware.rb:16:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call' 
rack (1.3.10) lib/rack/etag.rb:23:in `call' 
rack (1.3.10) lib/rack/conditionalget.rb:25:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/head.rb:14:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/params_parser.rb:21:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/flash.rb:242:in `call' 
rack (1.3.10) lib/rack/session/abstract/id.rb:195:in `context' 
rack (1.3.10) lib/rack/session/abstract/id.rb:190:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/cookies.rb:341:in `call' 
activerecord (3.2.21) lib/active_record/query_cache.rb:64:in `call' 
activerecord (3.2.21) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call' 
activesupport (3.2.21) lib/active_support/callbacks.rb:405:in `_run__155349648496822945__call__1222344604970663536__callbacks' 
activesupport (3.2.21) lib/active_support/callbacks.rb:405:in `__run_callback' 
activesupport (3.2.21) lib/active_support/callbacks.rb:385:in `_run_call_callbacks' 
activesupport (3.2.21) lib/active_support/callbacks.rb:81:in `run_callbacks' 
actionpack (3.2.21) lib/action_dispatch/middleware/callbacks.rb:27:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/reloader.rb:65:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/remote_ip.rb:31:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call' 
railties (3.2.21) lib/rails/rack/logger.rb:32:in `call_app' 
railties (3.2.21) lib/rails/rack/logger.rb:16:in `block in call' 
activesupport (3.2.21) lib/active_support/tagged_logging.rb:22:in `tagged' 
railties (3.2.21) lib/rails/rack/logger.rb:16:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/request_id.rb:22:in `call' 
rack (1.3.10) lib/rack/methodoverride.rb:24:in `call' 
rack (1.3.10) lib/rack/runtime.rb:17:in `call' 
activesupport (3.2.21) lib/active_support/cache/strategy/local_cache.rb:72:in `call' 
rack (1.3.10) lib/rack/lock.rb:15:in `call' 
actionpack (3.2.21) lib/action_dispatch/middleware/static.rb:83:in `call' 
railties (3.2.21) lib/rails/engine.rb:484:in `call' 
railties (3.2.21) lib/rails/application.rb:231:in `call' 
rack (1.3.10) lib/rack/content_length.rb:14:in `call' 
railties (3.2.21) lib/rails/rack/log_tailer.rb:17:in `call' 
rack (1.3.10) lib/rack/handler/webrick.rb:59:in `service' 
/Users/sidylife/.rbenv/versions/2.0.0-p648/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service' 
/Users/sidylife/.rbenv/versions/2.0.0-p648/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run' 
/Users/sidylife/.rbenv/versions/2.0.0-p648/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread' 

Answer 1

私はついに長い瞑想の後にこれを理解することができました。私は先に進んでこのバージョンをスキップし、それが解決することを期待して押し込んだだけです。どのようにして、何も起こらなかった。私はレール4に前進することでこのエラーを取り除きました...しかし、もう1つのアクティブなレコードエラーがポップアップし続けました。そこで、@tallboyは私のgemfileとgemfile.lockを見て、この新しいエラーを理解するのを助け、私のgemfileがロックされていたarelのバージョンが古い2.2.3バージョンであることを認識しました。

次に、私はこの問題に逆戻りして、このエラーのstacktraceの最初の2行がarel libを呼び出していることに気付きました。

私は3.2.xxのレールに戻って、適切なarel libとBOOMに更新しました。それは今、魅力のように動作します。 Rails 3.2.22.5は、arelバージョンを3.0.3に変更するだけで動作します。

もう一度... @tallboyは私の裏を救った！

Answer 2

です。私は、これはトリックを行う必要があります信じて

gem 'mysql2', '~> 0.3', '= 0.3.18' 

多分

gem 'mysql2', '~> 0.3', '= 0.3.15' 

と

スタート。