Validations in Ruby

Transcript

1. V
   ALIDATIONS IN Ruby
   Krzysztof W
   a
   wer
   23.03.2016
   TRUG
   

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2. ABOUT ME
   • E-MAIL:
   krzysztof.w
   a
   wer@gmail.com
   • Twitter:

   https://twitter.com/w
   afcio
   • GITHUB:

   https://github.com/w
   afcio
   

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3. V
   ALIDATION ???
   

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4. Ruby on rails
   ACTIVE MODEL & ACTIVE RECORD
   Active Model
   Active
   Record
   

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5. ACTIVE MODEL
   V
   ALIDATIONS
   • acceptance
   • confirmation
   • exclusion
   • format
   • inclusion
   • length
   • numericality
   • presence
   • uniqueness*
   

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6. UNIQUENESS V
   ALIDATION
   tester@example.com exists ?
   tester@example.com exists ?
   Email doesn’t exist
   Email doesn’t exist
   Create tester@example.com
   Create tester@example.com
   Created!
   Created!
   1 2
   

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7. UNIQUENESS V
   ALIDATION
   

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8. UNIQUENESS V
   ALIDATION
   tester@example.com exists ?
   tester@example.com exists ?
   Email doesn’t exist
   Email doesn’t exist
   Create tester@example.com
   Create tester@example.com
   Created!
   ActiveRecord::RecordNotUnique
   1 2
   

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9. Ruby on Rails
   • Strong Parameters
   http://edgeguides.rubyonrails.org/action_controller_overview.html#strong-parameters
   

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10. STRONG PARAMETERS
    { name: „John”, surname: „Doe” }
    { name: „John” }
    

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11. STRONG PARAMETERS
    { name: „John”, surname: „Doe” }
    ActionController::UnpermittedParameters: found unpermitted keys: surname
    ActionController::Parameters.action_on_unpermitted_parameters = :raise
    

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12. HTTP Requests
    GET
    POST
    GET, POST (JSON)
    String
    String
    String
    Integer
    …
    

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13. HANAMI
    http://hanamirb.org
    https://github.com/hanami
    •hanami-controller
    •HANAMI-MODEL
    •HANAMI-HELPERS
    •HANAMI-MAILER
    •HANAMI-VIEW
    •HANAMI-V
    ALIDATIONS
    •HANAMI-ASSETS
    •HANAMI-UTILS
    Luca Guidi
    

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14. HANAMI-V
    ALIDATIONS
    https://github.com/hanami/v
    alidations#v
    alidations
    •ACCEPTANCE
    •CONFIRMATION
    •EXCLUSION
    •INCLUSION
    •PRESENCE
    •FORMAT*
    •SIZE*
    •TYPE (Coercions)
    

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15. HANAMI-V
    ALIDATIONS
    • numericality V
    ALIDATION DoesN’t Exist
    • „The framework will treat as V
    alid any blank
    attributes, without PRESENCE, for both FORMAT and SIZE
    predicates.”
    

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16. DRY
    https://github.com/dry-rb
    •DRY-AUTO_INJECT
    •DRY-COMPONENT
    •DRY-CONFIGURABLE
    •DRY-CONSTRUCTOR
    •DRY-CONTAINER
    •DRY-EQUALIZER
    •DRY-INITALIZER
    •DRY-LOGIC
    •DRY-PIPELINE
    •DRY-TRANSACTION
    •DRY-TYPES
    •DRY-V
    ALIDATION
    

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17. DRY-V
    ALIDATION
    LATEST VERSION: 0.7.0
    RELEASE DATE: 16.03.2016
    http://dry-rb.org/gems/dry-v
    alidation/
    

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18. DRY-V
    ALIDATION
    When to use?
    V
    ALIDATION OF:
    • form params
    • „GET” params
    • JSON params
    • Y
    AML DOCUMENTS
    • application configuration
    • replacement of ActiveRecord / ActiveModel::Validations
    • replacement of StrongParameters
    • …
    

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19. ???
    

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