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Site updated @ Sat Oct 25 21:34:28 CST 2014
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‎4_0_release_notes.html

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@@ -423,11 +423,11 @@ <h4 id="action-pack-deprecations">10.2 Deprecations</h4><h3 id="active-record">1
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The method <code>change_table</code> is also reversible, as long as its block doesn't call <code>remove</code>, <code>change</code> or <code>change_default</code>
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</li>
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<li>New method <code>reversible</code> makes it possible to specify code to be run when migrating up or down.
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See the <a href="https://github.com/rails/rails/blob/master/guides/source/migrations.md#using-the-reversible-method">Guide on Migration</a>
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See the <a href="https://github.com/rails/rails/blob/master/guides/source/active_record_migrations.md#using-reversible">Guide on Migration</a>
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</li>
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<li>New method <code>revert</code> will revert a whole migration or the given block.
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If migrating down, the given migration / block is run normally.
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See the <a href="https://github.com/rails/rails/blob/master/guides/source/migrations.md#reverting-previous-migrations">Guide on Migration</a>
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See the <a href="https://github.com/rails/rails/blob/master/guides/source/active_record_migrations.md#reverting-previous-migrations">Guide on Migration</a>
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</li>
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</ul>
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</li>

‎action_controller_overview.html

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@@ -1218,16 +1218,16 @@ <h3 id="過濾-log">13 過濾 Log</h3><p>Rails 為每個環境都存有 Log 檔
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</ul>
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<div class="code_container">
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<pre class="brush: plain; gutter: false; toolbar: false">
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errors/
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not_found.html.erb
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unprocessable_entity.html.erb
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server_error.html.erb
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layouts/
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error.html.erb
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errors/
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not_found.html.erb
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unprocessable_entity.html.erb
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server_error.html.erb
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layouts/
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error.html.erb
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</pre>
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</div>
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<p>別忘記在 Controller 設定正確的錯誤碼（如上所示）。錯誤頁面要避免使用資料庫，或進行任何複雜的操作。因為使用者已經到了錯誤頁面這裡，在錯誤頁面產生另外的錯誤會造成不必要的問題。</p><h3 id="強制使用-https-協定">15 強制使用 HTTPS 協定</h3><p>有時候出於安全性考量，可能想讓特定的 Controller 只可以透過 HTTPS 來存取。可以在 Controller 使用 <code>force_ssl</code> 方法：</p><div class="code_container">
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<p>別忘記在 Controller 設定正確的錯誤碼（如上所示）。</p><div class="warning"><p>錯誤頁面要避免對資料庫進行操作，或是進行任何複雜的操作。因為使用者已經到了錯誤頁面這裡，在錯誤頁面產生另外的錯誤會造成不必要的問題。</p></div><h3 id="強制使用-https-協定">15 強制使用 HTTPS 協定</h3><p>有時候出於安全性考量，可能想讓特定的 Controller 只可以透過 HTTPS 來存取。可以在 Controller 使用 <code>force_ssl</code> 方法：</p><div class="code_container">
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<pre class="brush: ruby; gutter: false; toolbar: false">
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class DinnerController
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force_ssl

‎active_job_basics.html

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@@ -261,129 +261,11 @@ <h4 id="任務排程">3.2 任務排程</h4><p>將任務加入排程：</p><div c
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</pre>
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</div>
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<p>就這麼簡單！</p><h3 id="執行任務">4 執行任務</h3><p>若無設定連接器，任務會即刻執行。</p><h4 id="後台">4.1 後台</h4><p>Active Job 針對提供以下佇列後台的連接器：</p>
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<ul>
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<li><a href="https://github.com/nesquena/backburner">Backburner</a></li>
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<li><a href="https://github.com/collectiveidea/delayed_job">Delayed Job</a></li>
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<li><a href="https://github.com/bkeepers/qu">Qu</a></li>
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<li><a href="https://github.com/chanks/que">Que</a></li>
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<li><a href="https://github.com/ryandotsmith/queue_classic/tree/v2.2.3">QueueClassic 2.x</a></li>
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<li><a href="https://github.com/resque/resque/tree/1-x-stable">Resque 1.x</a></li>
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<li><a href="https://github.com/mperham/sidekiq">Sidekiq</a></li>
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<li><a href="https://github.com/jondot/sneakers">Sneakers</a></li>
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<li><a href="https://github.com/brandonhilkert/sucker_punch">Sucker Punch</a></li>
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</ul>
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<h5 id="各後台功能特色">4.1.1 各後台功能特色</h5>
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<table>
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<thead>
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<tr>
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<th></th>
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<th>Async</th>
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<th>Queues</th>
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<th>Delayed</th>
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<th>Priorities</th>
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<th>Timeout</th>
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<th>Retries</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><strong>Backburner</strong></td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Job</td>
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<td>Global</td>
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</tr>
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<tr>
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<td><strong>Delayed Job</strong></td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Job</td>
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<td>Global</td>
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<td>Global</td>
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</tr>
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<tr>
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<td><strong>Que</strong></td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Job</td>
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<td>No</td>
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<td>Job</td>
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</tr>
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<tr>
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<td><strong>Queue Classic</strong></td>
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<td>Yes</td>
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<td>Yes</td>
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<td>No*</td>
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<td>No</td>
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<td>No</td>
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<td>No</td>
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</tr>
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<tr>
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<td><strong>Resque</strong></td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Yes (Gem)</td>
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<td>Queue</td>
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<td>Global</td>
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<td>Yes</td>
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</tr>
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<tr>
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<td><strong>Sidekiq</strong></td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Queue</td>
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<td>No</td>
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<td>Job</td>
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</tr>
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<tr>
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<td><strong>Sneakers</strong></td>
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<td>Yes</td>
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<td>Yes</td>
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<td>No</td>
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<td>Queue</td>
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<td>Queue</td>
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<td>No</td>
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</tr>
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<tr>
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<td><strong>Sucker Punch</strong></td>
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<td>Yes</td>
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<td>Yes</td>
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<td>No</td>
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<td>No</td>
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<td>No</td>
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<td>No</td>
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</tr>
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<tr>
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<td><strong>Active Job Inline</strong></td>
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<td>No</td>
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<td>Yes</td>
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<td>N/A</td>
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<td>N/A</td>
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<td>N/A</td>
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<td>N/A</td>
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</tr>
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<tr>
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<td><strong>Active Job</strong></td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>No</td>
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<td>No</td>
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<td>No</td>
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</tr>
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</tbody>
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</table>
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<div class="note"><p>* Queue Classic 不支援任務排程。但可以自己用 queue_classic-later Gem 來實作，詳細請參考 <code>ActiveJob::QueueAdapters::QueueClassicAdapter</code> 的文件。</p></div><h4 id="切換後台">4.2 切換後台</h4><p>切換後台的連接器非常簡單：</p><div class="code_container">
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<p>就這麼簡單！</p><h3 id="執行任務">4 執行任務</h3><p>若無設定連接器，任務會即刻執行。</p><h4 id="後台">4.1 後台</h4><p>Active Job 內建支援多種佇列後台的連接器（Sidekiq、Resque、Delayed Job 等）。完整連接器列表請見 <a href="http://api.rubyonrails.org/classes/ActiveJob/QueueAdapters.html">ActiveJob::QueueAdapters</a> 的 API 文件。</p><h4 id="切換後台">4.2 切換後台</h4><p>切換後台的連接器非常簡單：</p><div class="code_container">
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<pre class="brush: ruby; gutter: false; toolbar: false">
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# be sure to have the adapter gem in your Gemfile and follow the adapter specific
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# installation and deployment instructions
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YourApp::Application.config.active_job.queue_adapter = :sidekiq
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Rails.Application.config.active_job.queue_adapter = :sidekiq
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</pre>
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</div>

‎active_record_basics.html

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<code>lock_version</code> - 加入 <a href="http://api.rubyonrails.org/classes/ActiveRecord/Locking.html">optimistic
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locking</a> 功能至 Model。</li>
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<li>
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<code>type</code> - 表示 Model 開啟了<a href="http://api.rubyonrails.org/classes/ActiveRecord/Base.html#label-Single+table+inheritance">單表繼承</a>功能。</li>
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<code>type</code> - 表示 Model 開啟了<a href="http://api.rubyonrails.org/classes/ActiveRecord/Base.html#class-ActiveRecord::Base-label-Single+table+inheritance">單表繼承</a>功能。</li>
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<li>
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<code>(association_name)_type</code> - 儲存
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<a href="association_basics.html#polymorphic-associations">多態關聯</a> 所需的類型資料。</li>

‎active_record_validations.html

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</pre>
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</div>
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<p><code>format</code> 預設錯誤訊息是 <em>"is invalid"</em>。</p><h4 id="inclusion">2.6 <code>inclusion</code>
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<p>也可以使用 <code>:without</code> 來指定沒有匹配的屬性。</p><p><code>format</code> 預設錯誤訊息是 <em>"is invalid"</em>。</p><h4 id="inclusion">2.6 <code>inclusion</code>
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</h4><p>這個方法驗證屬性是否“屬於”某個給定的集合。集合可以是任何 <code>Enumerable</code> 的物件。</p><div class="code_container">
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<pre class="brush: ruby; gutter: false; toolbar: false">
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class Coffee &lt; ActiveRecord::Base
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</pre>
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</div>
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<p>如透過 <code>has_one</code> 或 <code>has_many</code> 關係來驗證關聯的物件是否存在，則會對該物件呼叫 <code>blank?</code> 與 <code>marked_for_destruction?</code>，來確定存在性。</p><p>由於 <code>false.blank?</code> 為 <code>true</code>，如果想驗證布林欄位的存在性，應該要使用 <code>validates :field_name, inclusion: { in: [true, false] }</code>。</p><p>預設錯誤訊息是 <em>"can't be blank"</em>。</p><h4 id="absence">2.10 <code>absence</code>
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<p>如透過 <code>has_one</code> 或 <code>has_many</code> 關係來驗證關聯的物件是否存在，則會對該物件呼叫 <code>blank?</code> 與 <code>marked_for_destruction?</code>，來確定存在性。</p><p>由於 <code>false.blank?</code> 為 <code>true</code>，如果想驗證布林欄位的存在性，應該要使用下列的驗證方法：</p><div class="code_container">
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<pre class="brush: ruby; gutter: false; toolbar: false">
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validates :boolean_field_name, presence: true
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validates :boolean_field_name, inclusion: { in: [true, false] }
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validates :boolean_field_name, exclusion: { in: [nil] }
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</pre>
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</div>
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<p>預設錯誤訊息是 <em>"can't be blank"</em>。</p><h4 id="absence">2.10 <code>absence</code>
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</h4><p>這個方法驗證是否“不存在”。使用 <code>present?</code> 來檢查數值是否為非 <code>nil</code> 或非空字串（僅有空白的字串也是空字串）。</p><div class="code_container">
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<pre class="brush: ruby; gutter: false; toolbar: false">
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class Person &lt; ActiveRecord::Base
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<pre class="brush: ruby; gutter: false; toolbar: false">
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class Person &lt; ActiveRecord::Base
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validates_each :name, :surname do |record, attr, value|
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record.errors.add(attr, 'must start with upper case') if value =~ /\A[a-z]/
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record.errors.add(attr, 'must start with upper case') if value =~ /\A[[:lower:]]/
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end
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end
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