Rails 8.1.0 (October 22, 2025) ↑

  • The BEGIN template annotation/comment was previously printed on the same line as the following element. We now insert a newline inside the comment so it spans two lines without adding visible whitespace to the HTML output to enhance readability.

    Before:

    <!-- BEGIN /Users/siaw23/Desktop/rails/actionview/test/fixtures/actionpack/test/greeting.html.erb --><p>This is grand!</p>

    After:

    <!-- BEGIN /Users/siaw23/Desktop/rails/actionview/test/fixtures/actionpack/test/greeting.html.erb
--><p>This is grand!</p>

    Emmanuel Hayford

  • Add structured events for Action View:

    • action_view.render_template

    • action_view.render_partial

    • action_view.render_layout

    • action_view.render_collection

    • action_view.render_start

    Gannon McGibbon

  • Fix label with for option not getting prefixed by form namespace value

    Abeid Ahmed, Hartley McGuire

  • Add fetchpriority to Link headers to match HTML generated by preload_link_tag.

    Guillermo Iguaran

  • Add CSP nonce to Link headers generated by preload_link_tag.

    Alexander Gitter

  • Allow current_page? to match against specific HTTP method(s) with a method: option.

    Ben Sheldon

  • Remove autocomplete="off" on hidden inputs generated by the following tags:

    • form_tag, token_tag, method_tag

    As well as the hidden parameter fields included in button_to, check_box, select (with multiple) and file_field forms.

    nkulway

  • Enable configuring the strategy for tracking dependencies between Action View templates.

    The existing :regex strategy is kept as the default, but with load_defaults 8.1 the strategy will be :ruby (using a real Ruby parser).

    Hartley McGuire

  • Introduce relative_time_in_words helper

    relative_time_in_words(3.minutes.from_now) # => "in 3 minutes"
relative_time_in_words(3.minutes.ago) # => "3 minutes ago"
relative_time_in_words(10.seconds.ago, include_seconds: true) # => "less than 10 seconds ago"

    Matheus Richard

  • Make nonce: false remove the nonce attribute from javascript_tag, javascript_include_tag, and stylesheet_link_tag.

    francktrouillez

  • Add dom_target helper to create dom_id-like strings from an unlimited number of objects.

    Ben Sheldon

  • Respect html_options[:form] when collection_checkboxes generates the hidden <input>.

    Riccardo Odone

  • Layouts have access to local variables passed to render.

    This fixes #31680 which was a regression in Rails 5.1.

    Mike Dalessio

  • Argument errors related to strict locals in templates now raise an ActionView::StrictLocalsError, and all other argument errors are reraised as-is.

    Previously, any ArgumentError raised during template rendering was swallowed during strict local error handling, so that an ArgumentError unrelated to strict locals (e.g., a helper method invoked with incorrect arguments) would be replaced by a similar ArgumentError with an unrelated backtrace, making it difficult to debug templates.

    Now, any ArgumentError unrelated to strict locals is reraised, preserving the original backtrace for developers.

    Also note that ActionView::StrictLocalsError is a subclass of ArgumentError, so any existing code that rescues ArgumentError will continue to work.

    Fixes #52227.

    Mike Dalessio

  • Improve error highlighting of multi-line methods in ERB templates or templates where the error occurs within a do-end block.

    Martin Emde

  • Fix a crash in ERB template error highlighting when the error occurs on a line in the compiled template that is past the end of the source template.

    Martin Emde

  • Improve reliability of ERB template error highlighting. Fix infinite loops and crashes in highlighting and improve tolerance for alternate ERB handlers.

    Martin Emde

  • Allow hidden_field and hidden_field_tag to accept a custom autocomplete value.

    brendon

  • Add a new configuration content_security_policy_nonce_auto for automatically adding a nonce to the tags affected by the directives specified by the content_security_policy_nonce_directives configuration option.

    francktrouillez

Please check 8-0-stable for previous changes.