rails--rails/guides/source/6_1_release_notes.md

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Ruby on Rails 6.1 Release Notes

Highlights in Rails 6.1:

These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the change logs or check out the list of commits in the main Rails repository on GitHub.

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Upgrading to Rails 6.1

If you're upgrading an existing application, it's a great idea to have good test coverage before going in. You should also first upgrade to Rails 6.0 in case you haven't and make sure your application still runs as expected before attempting an update to Rails 6.1. A list of things to watch out for when upgrading is available in the Upgrading Ruby on Rails guide.

Major Features

Railties

Please refer to the Changelog for detailed changes.

Removals

Deprecations

Notable changes

Action Cable

Please refer to the Changelog for detailed changes.

Removals

Deprecations

Notable changes

Action Pack

Please refer to the Changelog for detailed changes.

Removals

• Remove deprecated ActionDispatch::Http::ParameterFilter.

• Remove deprecated force_ssl at the controller level.

Deprecations

• Deprecate config.action_dispatch.return_only_media_type_on_content_type.

Notable changes

• Change ActionDispatch::Response#content_type to return the full Content-Type header.

Action View

Please refer to the Changelog for detailed changes.

Removals

• Remove deprecated escape_whitelist from ActionView::Template::Handlers::ERB.

• Remove deprecated find_all_anywhere from ActionView::Resolver.

• Remove deprecated formats from ActionView::Template::HTML.

• Remove deprecated formats from ActionView::Template::RawFile.

• Remove deprecated formats from ActionView::Template::Text.

• Remove deprecated find_file from ActionView::PathSet.

• Remove deprecated rendered_format from ActionView::LookupContext.

• Remove deprecated find_file from ActionView::ViewPaths.

• Require that ActionView::Base subclasses implement #compiled_method_container.

• Remove deprecated support to pass an object that is not a ActionView::LookupContext as the first argument in ActionView::Base#initialize.

• Remove deprecated format argument ActionView::Base#initialize.

• Remove deprecated ActionView::Template#refresh.

• Remove deprecated ActionView::Template#original_encoding.

• Remove deprecated ActionView::Template#variants.

• Remove deprecated ActionView::Template#formats.

• Remove deprecated ActionView::Template#virtual_path=.

• Remove deprecated ActionView::Template#updated_at.

• Remove deprecated updated_at argument required on ActionView::Template#initialize.

• Make locals argument required on ActionView::Template#initialize.

• Remove deprecated ActionView::Template.finalize_compiled_template_methods.

• Remove deprecated config.action_view.finalize_compiled_template_methods

• Remove deprecated support to calling ActionView::ViewPaths#with_fallback with a block.

• Remove deprecated support to passing absolute paths to render template:.

• Remove deprecated support to passing relative paths to render file:.

• Remove support to template handlers that don't accept two arguments.

• Remove deprecated pattern argument in ActionView::Template::PathResolver.

• Remove deprecated support to call private methods from object in some view helpers.

Deprecations

Notable changes

Action Mailer

Please refer to the Changelog for detailed changes.

Removals

• Remove deprecated ActionMailer::Base.receive in favor of Action Mailbox.

Deprecations

Notable changes

Active Record

Please refer to the Changelog for detailed changes.

Removals

• MySQL: Uniqueness validator now respects default database collation, no longer enforce case sensitive comparison by default.

• Remove deprecated methods from ActiveRecord::ConnectionAdapters::DatabaseLimits.

  column_name_length table_name_length columns_per_table indexes_per_table columns_per_multicolumn_index sql_query_length joins_per_query

• Remove deprecated ActiveRecord::ConnectionAdapters::AbstractAdapter#supports_multi_insert?.

• Remove deprecated ActiveRecord::ConnectionAdapters::AbstractAdapter#supports_foreign_keys_in_create?.

• Remove deprecated ActiveRecord::ConnectionAdapters::PostgreSQLAdapter#supports_ranges?.

• Remove deprecated ActiveRecord::Base#update_attributes and ActiveRecord::Base#update_attributes!.

• Remove deprecated migrations_path argument in ActiveRecord::ConnectionAdapter::SchemaStatements#assume_migrated_upto_version.

• Remove deprecated config.active_record.sqlite3.represent_boolean_as_integer.

• Remove deprecated methods from ActiveRecord::DatabaseConfigurations.

  fetch each first values []=

• Remove deprecated ActiveRecord::Result#to_hash method.

• Remove deprecated support for using unsafe raw SQL in ActiveRecord::Relation methods.

Deprecations

• Deprecate ActiveRecord::Base.allow_unsafe_raw_sql.

Notable changes

• relation.create does no longer leak scope to class level querying methods in initialization block and callbacks.

  Before:

  User.where(name: "John").create do |john|
    User.find_by(name: "David") # => nil
  end
  

  After:

  User.where(name: "John").create do |john|
    User.find_by(name: "David") # => #<User name: "David", ...>
  end
  

• Named scope chain does no longer leak scope to class level querying methods.

  class class User < ActiveRecord::Base
    scope :david, -> { User.where(name: "David") }
  end
  

  Before:

  User.where(name: "John").david
  # SELECT * FROM users WHERE name = 'John' AND name = 'David'
  

  After:

  User.where(name: "John").david
  # SELECT * FROM users WHERE name = 'David'
  

• where.not now generates NAND predicates instead of NOR.

  Before:

   User.where.not(name: "Jon", role: "admin")
   # SELECT * FROM users WHERE name != 'Jon' AND role != 'admin'
  

  After:

   User.where.not(name: "Jon", role: "admin")
   # SELECT * FROM users WHERE NOT (name == 'Jon' AND role == 'admin')
  

Active Storage

Please refer to the Changelog for detailed changes.

Removals

• Remove deprecated support to pass :combine_options operations to ActiveStorage::Transformers::ImageProcessing.

• Remove deprecated ActiveStorage::Transformers::MiniMagickTransformer.

• Remove deprecated config.active_storage.queue.

• Remove deprecated ActiveStorage::Downloading.

Deprecations

• Deprecate Blob.create_after_upload in favor of Blob.create_and_upload. (Pull Request)

Notable changes

• Add Blob.create_and_upload to create a new blob and upload the given io to the service. (Pull Request)

Active Model

Please refer to the Changelog for detailed changes.

Removals

Deprecations

Notable changes

Active Support

Please refer to the Changelog for detailed changes.

Removals

• Remove deprecated fallback to I18n.default_local when config.i18n.fallbacks is empty.

• Remove deprecated LoggerSilence constant.

• Remove deprecated ActiveSupport::LoggerThreadSafeLevel#after_initialize.

• Remove deprecated Module#parent_name, Module#parent and Module#parents.

• Remove deprecated file active_support/core_ext/module/reachable.

• Remove deprecated file active_support/core_ext/numeric/inquiry.

• Remove deprecated file active_support/core_ext/array/prepend_and_append.

• Remove deprecated file active_support/core_ext/hash/compact.

• Remove deprecated file active_support/core_ext/hash/transform_values.

• Remove deprecated file active_support/core_ext/range/include_range.

Deprecations

Notable changes

Active Job

Please refer to the Changelog for detailed changes.

Removals

Deprecations

• Deprecate config.active_job.return_false_on_aborted_enqueue.

Notable changes

• Return false when enqueuing a job is aborted.

Action Text

Please refer to the Changelog for detailed changes.

Removals

Deprecations

Notable changes

• Add method to confirm rich text content existence by adding ? after name of the rich text attribute. (Pull Request)

• Add fill_in_rich_text_area system test case helper to find a trix editor and fill it with given HTML content. (Pull Request)

Action Mailbox

Please refer to the Changelog for detailed changes.

Removals

Deprecations

Notable changes

Ruby on Rails Guides

Please refer to the Changelog for detailed changes.

Notable changes

Credits

See the full list of contributors to Rails for the many people who spent many hours making Rails, the stable and robust framework it is. Kudos to all of them.