rails guide validation
Model-level validations are the best way to ensure that only valid data is saved ... ,Validations allow you to ensure that only valid data is stored in your database. Callbacks and observers allow you to trigger logic before or after an alteration of an ... ,Rails makes them easy to use, provides built-in helpers for common needs, and allows you to create your own validation methods as well. There are several other ways to validate data before it is saved into your database, including native database constrai,注意 save 也能夠略過驗證，傳入 validate: false 作為參數即可。這個技巧要小心 ... p.save! # => ActiveRecord::RecordInvalid: Validation failed: Name can't be blank ... 請先檢查Edge Guides 來確定問題在master 是否已經修掉了。再上master 補 ...
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 rails guide validation 相關參考資料
Active Record Validations - Rails Edge Guides - Ruby on Rails
Model-level validations are the best way to ensure that only valid data is saved ... https://edgeguides.rubyonrails Active Record Validations and Callbacks - Ruby on Rails Guides
Validations allow you to ensure that only valid data is stored in your database. Callbacks and observers allow you to trigger logic before or after an alteration of an ... https://guides.rubyonrails.org Active Record Validations — Ruby on Rails Guides
Rails makes them easy to use, provides built-in helpers for common needs, and allows you to create your own validation methods as well. There are several other ways to validate data before it is saved... https://guides.rubyonrails.org Active Record 驗證— Ruby on Rails 指南
注意 save 也能夠略過驗證，傳入 validate: false 作為參數即可。這個技巧要小心 ... p.save! # => ActiveRecord::RecordInvalid: Validation failed: Name can't be blank ... 請先檢查Edge Guides 來確定問題在master 是否已經修掉了。再上master 補 .... https://rails.ruby.tw |