[教育訓練] Rails Validation Basic

Transcript

1. Rails Validation
   徐赫謙
   

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2. Rails Validation
   Basic
   

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3. 會經過驗證的
   • create
   • create!
   • save
   • save!
   • update
   • update_attributes
   • update_attributes!
   

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4. 注意
   • 有驚嘆號的(save!)驗證失敗會丟例外
   • 沒驚嘆號的驗證失敗會回傳
   • false: save, update_attributes
   • 物件: create, update
   

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5. 不會經過驗證的
   decrement!
   • decrement_counter
   • increment!
   • increment_counter
   • toggle!
   • touch
   • update_all
   • update_attribute
   • update_column
   • update_counters
   

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6. ⼿手動跟驗證說掰掰
   save({validate: false})
   

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7. Demo
   https://gist.github.com/3508269#file_02_demo.rb
   

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8. valid? invalid?
   https://gist.github.com/3508269#file_01_valid_invalid.rb
   

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9. errors[]
   https://gist.github.com/3508269#file_01_valid_invalid.rb
   

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10. helpers
    • acceptance
    • confirmation
    • exclusion
    • format
    • uniqueness
    • inclusion
    • length
    • numericality
    • presence
    • size
    • validates_associated
    

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11. Example
    https://gist.github.com/3508269#file_04_demo.rb
    

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