• Support text/markdown format in DebugExceptions middleware.

  When text/markdown is requested via the Accept header, error responses are returned with Content-Type: text/markdown instead of HTML. The existing text templates are reused for markdown output, allowing CLI tools and other clients to receive byte-efficient error information.

  Guillermo Iguaran

• Support dynamic to: and within: options in rate_limit.

  The to: and within: options now accept callables (lambdas or procs) and method names (as symbols), in addition to static values. This allows for dynamic rate limiting based on user attributes or other runtime conditions.

  class APIController < ApplicationController
    rate_limit to: :max_requests, within: :time_window, by: -> { current_user.id }
  
    private
      def max_requests
        current_user.premium? ? 1000 : 100
      end
  
      def time_window
        current_user.premium? ? 1.hour : 1.minute
      end
  end

  Murilo Duarte

• Define ActionController::Parameters#deconstruct_keys to support pattern matching

  if params in { search:, page: }
    Article.search(search).limit(page)
  else
    …
  end
  
  case (value = params[:string_or_hash_with_nested_key])
  in String
    # do something with a String `value`…
  in { nested_key: }
    # do something with `nested_key` or `value`
  else
    # …
  end

  Sean Doyle

• Submit test requests using as: :html with Content-Type: x-www-form-urlencoded

  Sean Doyle

Please check [8-1-stable]) for previous changes.