rails db:rollback
If the database does not support this then when a migration fails the parts of it that succeeded will not be rolled back. You will have to rollback the changes that ... ,2011年7月9日 — rake db:rollback STEP=1. Is a way to do this, if the migration you want to rollback is the last one applied. You can substitute 1 for however many ... ,2014年1月15日 — For starters. rake db:rollback will get you back one step. then. rake db:rollback STEP=n. Will roll you back n migrations where n is the number of ... ,You must rollback the migration (for example with rake db:rollback), edit your migration and then run rake db:migrate to run the corrected version. In general ... ,... 修改後的效果。 如果Migration 寫錯，只要修改後再重新執行 rails db:migrate 指令就行了。 ... bin/rails db:rollback == 20161231224701 CreateArticles: reverting ... ,完成後，執行 bin/rake db:migrate 便會實際在資料庫新增這個欄位。 ... rake db:migrate 執行Migration動作; rake db:rollback STEP=n 回復上N個Migration 動作 ... ,就新手(我)而言最常用的資料庫操作相關rails指令如下 rake db:migrate #執行Migration動作 rake db:rollback STEP=n #回復上N個Migration 動作 rake db:seed ... ,如果Migration 有寫錯，只要修改之後再重新執行 rails db:migrate 指令就行了。 ... 其實做法有好幾款，其中一款，就是執行Rollback 指令，把執行過的Migration 倒 ... ,還可以用 rails db:rollback 降級： D:-只要有心，人人都可以作卡米狗-ironman>rails db:rollback == 20180110181744 CreateKeywordMappings: reverting ...
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 rails db:rollback 相關參考資料
Active Record Migrations — Ruby on Rails Guides
If the database does not support this then when a migration fails the parts of it that succeeded will not be rolled back. You will have to rollback the changes that ... https://edgeguides.rubyonrails How to rollback a specific migration? - Stack Overflow
2011年7月9日 — rake db:rollback STEP=1. Is a way to do this, if the migration you want to rollback is the last one applied. You can substitute 1 for however many ... https://stackoverflow.com How to rollback just one step using rake db:migrate - Stack ...
2014年1月15日 — For starters. rake db:rollback will get you back one step. then. rake db:rollback STEP=n. Will roll you back n migrations where n is the number of ... https://stackoverflow.com Migrations - Ruby on Rails Guides
You must rollback the migration (for example with rake db:rollback), edit your migration and then run rake db:migrate to run the corrected version. In general ... https://guides.rubyonrails.org Model Migration 為你自己學Ruby on Rails | 高見龍 - railsbook.tw
... 修改後的效果。 如果Migration 寫錯，只要修改後再重新執行 rails db:migrate 指令就行了。 ... bin/rails db:rollback == 20161231224701 CreateArticles: reverting ... https://railsbook.tw Ruby on Rails 實戰聖經| Active Record - 資料庫遷移(Migration)
完成後，執行 bin/rake db:migrate 便會實際在資料庫新增這個欄位。 ... rake db:migrate 執行Migration動作; rake db:rollback STEP=n 回復上N個Migration 動作 ... https://ihower.tw Ruby on Rails-談Migration概念與用法. 在網路上看到了這張圖 ...
就新手(我)而言最常用的資料庫操作相關rails指令如下 rake db:migrate #執行Migration動作 rake db:rollback STEP=n #回復上N個Migration 動作 rake db:seed ... https://weilihmen.medium.com 第16 章- Model Migration - iT 邦幫忙 - iThome
如果Migration 有寫錯，只要修改之後再重新執行 rails db:migrate 指令就行了。 ... 其實做法有好幾款，其中一款，就是執行Rollback 指令，把執行過的Migration 倒 ... https://ithelp.ithome.com.tw 第二十四天：認識資料庫(續) - iT 邦幫忙 - iThome
還可以用 rails db:rollback 降級： D:-只要有心，人人都可以作卡米狗-ironman>rails db:rollback == 20180110181744 CreateKeywordMappings: reverting ... https://ithelp.ithome.com.tw |