rails 8.0.0.rc1

on Ruby Gems

Active Support

• Remove deprecated support to passing an array of strings to ActiveSupport::Deprecation#warn.

  Rafael Mendonça França

• Remove deprecated support to setting attr_internal_naming_format with a @ prefix.

  Rafael Mendonça França

• Remove deprecated ActiveSupport::ProxyObject.

  Rafael Mendonça França

• Don't execute i18n watcher on boot. It shouldn't catch any file changes initially,
  and unnecessarily slows down boot of applications with lots of translations.

  Gannon McGibbon, David Stosik

• Fix ActiveSupport::HashWithIndifferentAccess#stringify_keys to stringify all keys not just symbols.

  Previously:

  { 1 => 2 }.with_indifferent_access.stringify_keys[1] # => 2

  After this change:

  { 1 => 2 }.with_indifferent_access.stringify_keys["1"] # => 2

  This change can be seen as a bug fix, but since it behaved like this for a very long time, we're deciding
  to not backport the fix and to make the change in a major release.

  Jean Boussier

Active Model

• 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

Active Record

• Remove deprecated support to setting ENV["SCHEMA_CACHE"].

  Rafael Mendonça França

• Remove deprecated support to passing a database name to cache_dump_filename.

  Rafael Mendonça França

• Remove deprecated ActiveRecord::ConnectionAdapters::ConnectionPool#connection.

  Rafael Mendonça França

• Remove deprecated config.active_record.sqlite3_deprecated_warning.

  Rafael Mendonça França

• Remove deprecated config.active_record.warn_on_records_fetched_greater_than.

  Rafael Mendonça França

• Remove deprecated support for defining enum with keyword arguments.

  Rafael Mendonça França

• Remove deprecated support to finding database adapters that aren't registered to Active Record.

  Rafael Mendonça França

• Remove deprecated config.active_record.allow_deprecated_singular_associations_name.

  Rafael Mendonça França

• Remove deprecated config.active_record.commit_transaction_on_non_local_return.

  Rafael Mendonça França

• Fix incorrect SQL query when passing an empty hash to ActiveRecord::Base.insert.

  David Stosik

• Allow to save records with polymorphic join tables that have inverse_of
  specified.

  Markus Doits

• Fix association scopes applying on the incorrect join when using a polymorphic has_many through:.

  Joshua Young

• Allow ActiveRecord::Base#pluck to accept hash arguments with symbol and string values.

  Post.joins(:comments).pluck(:id, comments: :id)
  Post.joins(:comments).pluck("id", "comments" => "id")

  Joshua Young

• Make Float distinguish between float4 and float8 in PostgreSQL.

  Fixes #52742

  Ryota Kitazawa, Takayuki Nagatomi

Action View

• Remove deprecated support to passing a content to void tag elements on the tag builder.

  Rafael Mendonça França

• Remove deprecated support to passing nil to the model: argument of form_with.

  Rafael Mendonça França

Action Pack

• Remove Rails.application.config.action_controller.allow_deprecated_parameters_hash_equality.

  Rafael Mendonça França

• Improve ActionController::TestCase to expose a binary encoded request.body.

  The rack spec clearly states:

  The input stream is an IO-like object which contains the raw HTTP POST data.
  When applicable, its external encoding must be “ASCII-8BIT” and it must be opened in binary mode.

  Until now its encoding was generally UTF-8, which doesn't accurately reflect production
  behavior.

  Jean Boussier

• Update ActionController::AllowBrowser to support passing method names to :block

  class ApplicationController < ActionController::Base
    allow_browser versions: :modern, block: :handle_outdated_browser
  
    private
      def handle_outdated_browser
        render file: Rails.root.join("public/custom-error.html"), status: :not_acceptable
      end
  end

  Sean Doyle

• Raise an ArgumentError when invalid :only or :except options are passed into #resource and #resources.

  Joshua Young

Active Job

• Remove deprecated config.active_job.use_big_decimal_serializer.

  Rafael Mendonça França

Action Mailer

• No changes.

Action Cable

• No changes.

Active Storage

• No changes.

Action Mailbox

• No changes.

Action Text

• No changes.

Railties

• Remove deprecated support to extend Rails console through Rails::ConsoleMethods.

  Rafael Mendonça França

• Remove deprecated file rails/console/helpers.

  Rafael Mendonça França

• Remove deprecated file rails/console/app.

  Rafael Mendonça França

• Remove deprecated config.read_encrypted_secrets.

  Rafael Mendonça França

• Add Kamal support for devcontainers

  Previously generated devcontainer could not use docker and therefore Kamal.

  Joé Dupuis

Guides

• No changes.