rails--rails/activemodel/CHANGELOG.md

• Fix ActiveModel::Serializers::JSON#as_json method for timestamps.

  Before:

  contact = Contact.new(created_at: Time.utc(2006, 8, 1))
  contact.as_json["created_at"] # => 2006-08-01 00:00:00 UTC
  

  After:

  contact = Contact.new(created_at: Time.utc(2006, 8, 1))
  contact.as_json["created_at"] # => "2006-08-01T00:00:00.000Z"
  

  Bogdan Gusiev

• Allows configurable attribute name for #has_secure_password. This still defaults to an attribute named 'password', causing no breaking change. There is a new method #authenticate_XXX where XXX is the configured attribute name, making the existing #authenticate now an alias for this when the attribute is the default 'password'. Example:

  class User < ActiveRecord::Base
    has_secure_password :recovery_password, validations: false
  end
  
  user = User.new()
  user.recovery_password = "42password"
  user.recovery_password_digest # => "$2a$04$iOfhwahFymCs5weB3BNH/uX..."
  user.authenticate_recovery_password('42password') # => user
  

  Unathi Chonco

• Add config.active_model.i18n_full_message in order to control whether the full_message error format can be overridden at the attribute or model level in the locale files. This is false by default.

  Martin Larochelle

• Rails 6 requires Ruby 2.4.1 or newer.

  Jeremy Daer

Please check 5-2-stable for previous changes.