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rails 6.0.4

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Active Support

  • Fixed issue in ActiveSupport::Cache::RedisCacheStore not passing options to read_multi causing fetch_multi to not work properly.

    Rajesh Sharma

  • with_options copies its options hash again to avoid leaking mutations.

    Fixes #39343.

    Eugene Kenny

Active Model

  • No changes.

Active Record

  • Only warn about negative enums if a positive form that would cause conflicts exists.

    Fixes #39065.

    Alex Ghiculescu

  • Allow the inverse of a has_one association that was previously autosaved to be loaded.

    Fixes #34255.

    Steven Weber

  • Reset statement cache for association if table_name is changed.

    Fixes #36453.

    Ryuta Kamizono

  • Type cast extra select for eager loading.

    Ryuta Kamizono

  • Prevent collection associations from being autosaved multiple times.

    Fixes #39173.

    Eugene Kenny

  • Resolve issue with insert_all unique_by option when used with expression index.

    When the :unique_by option of ActiveRecord::Persistence.insert_all and ActiveRecord::Persistence.upsert_all was used with the name of an expression index, an error was raised. Adding a guard around the formatting behavior for the :unique_by corrects this.

    Usage:

    create_table :books, id: :integer, force: true do |t|
  t.column :name, :string
  t.index "lower(name)", unique: true
end

Book.insert_all [{ name: "MyTest" }], unique_by: :index_books_on_lower_name

    Fixes #39516.

    Austen Madden

  • Fix preloading for polymorphic association with custom scope.

    Ryuta Kamizono

  • Allow relations with different SQL comments in the or method.

    Takumi Shotoku

  • Resolve conflict between counter cache and optimistic locking.

    Bump an Active Record instance's lock version after updating its counter cache. This avoids raising an unnecessary ActiveRecord::StaleObjectError upon subsequent transactions by maintaining parity with the corresponding database record's lock_version column.

    Fixes #16449.

    Aaron Lipman

  • Fix through association with source/through scope which has joins.

    Ryuta Kamizono

  • Fix through association to respect source scope for includes/preload.

    Ryuta Kamizono

  • Fix eager load with Arel joins to maintain the original joins order.

    Ryuta Kamizono

  • Fix group by count with eager loading + order + limit/offset.

    Ryuta Kamizono

  • Fix left joins order when merging multiple left joins from different associations.

    Ryuta Kamizono

  • Fix index creation to preserve index comment in bulk change table on MySQL.

    Ryuta Kamizono

  • Change remove_foreign_key to not check :validate option if database doesn't support the feature.

    Ryuta Kamizono

  • Fix the result of aggregations to maintain duplicated "group by" fields.

    Ryuta Kamizono

  • Do not return duplicated records when using preload.

    Bogdan Gusiev

Action View

  • SanitizeHelper.sanitized_allowed_attributes and SanitizeHelper.sanitized_allowed_tags call safe_list_sanitizer's class method

    Fixes #39586

    Taufiq Muhammadi

Action Pack

  • Accept base64_urlsafe CSRF tokens to make forward compatible.

    Base64 strict-encoded CSRF tokens are not inherently websafe, which makes them difficult to deal with. For example, the common practice of sending the CSRF token to a browser in a client-readable cookie does not work properly out of the box: the value has to be url-encoded and decoded to survive transport.

    In Rails 6.1, we generate Base64 urlsafe-encoded CSRF tokens, which are inherently safe to transport. Validation accepts both urlsafe tokens, and strict-encoded tokens for backwards compatibility.

    In Rails 5.2.5, the CSRF token format is accidentally changed to urlsafe-encoded. If you upgrade apps from 5.2.5, set the config urlsafe_csrf_tokens = true.

    Rails.application.config.action_controller.urlsafe_csrf_tokens = true

    Scott Blum, Étienne Barrié

  • Signed and encrypted cookies can now store false as their value when action_dispatch.use_cookies_with_metadata is enabled.

    Rolandas Barysas

Active Job

  • No changes.

Action Mailer

  • No changes.

Action Cable

  • No changes.

Active Storage

  • The Poppler PDF previewer renders a preview image using the original document's crop box rather than its media box, hiding print margins. This matches the behavior of the MuPDF previewer.

    Vincent Robert

Action Mailbox

  • No changes.

Action Text

  • No changes.

Railties

  • Allow relative paths with trailing slashes to be passed to rails test.

    Eugene Kenny

  • Return a 405 Method Not Allowed response when a request uses an unknown HTTP method.

    Fixes #38998.

    Loren Norman