Rails 8.0.0 (November 07, 2024)

• No changes.

Rails 8.0.0.rc2 (October 30, 2024)

• No changes.

Rails 8.0.0.rc1 (October 19, 2024)

• Add :except_on option for validations. Grants the ability to skip validations in specified contexts.

  class User < ApplicationRecord
      #...
      validates :birthday, presence: { except_on: :admin }
      #...
  end
  
  user = User.new(attributes except birthday)
  user.save(context: :admin)
  

  Drew Bragg

Rails 8.0.0.beta1 (September 26, 2024)

• Make ActiveModel::Serialization#read_attribute_for_serialization public

  Sean Doyle

• Add a default token generator for password reset tokens when using has_secure_password.

  class User < ApplicationRecord
    has_secure_password
  end
  
  user = User.create!(name: "david", password: "123", password_confirmation: "123")
  token = user.password_reset_token
  User.find_by_password_reset_token(token) # returns user
  
  # 16 minutes later...
  User.find_by_password_reset_token(token) # returns nil
  
  # raises ActiveSupport::MessageVerifier::InvalidSignature since the token is expired
  User.find_by_password_reset_token!(token)
  

  DHH

• Add a load hook active_model_translation for ActiveModel::Translation.

  Shouichi Kamiya

• Add raise_on_missing_translations option to ActiveModel::Translation.
  When the option is set, human_attribute_name raises an error if a translation of the given attribute is missing.

  # ActiveModel::Translation.raise_on_missing_translations = false
  Post.human_attribute_name("title")
  => "Title"
  
  # ActiveModel::Translation.raise_on_missing_translations = true
  Post.human_attribute_name("title")
  => Translation missing. Options considered were: (I18n::MissingTranslationData)
      - en.activerecord.attributes.post.title
      - en.attributes.title
  
              raise exception.respond_to?(:to_exception) ? exception.to_exception : exception
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  

  Shouichi Kamiya

• Introduce ActiveModel::AttributeAssignment#attribute_writer_missing

  Provide instances with an opportunity to gracefully handle assigning to an
  unknown attribute:

  class Rectangle
    include ActiveModel::AttributeAssignment
  
    attr_accessor :length, :width
  
    def attribute_writer_missing(name, value)
      Rails.logger.warn "Tried to assign to unknown attribute #{name}"
    end
  end
  
  rectangle = Rectangle.new
  rectangle.assign_attributes(height: 10) # => Logs "Tried to assign to unknown attribute 'height'"
  

  Sean Doyle

Please check 7-2-stable for previous changes.