rails--rails/actionpack/CHANGELOG.md

• Deprecate redirect_to :back in favor of redirect_back, which accepts a required fallback_location argument, thus eliminating the possibility of a RedirectBackError.

  Derek Prior

• Add redirect_back method to ActionController::Redirecting to provide a way to safely redirect to the HTTP_REFERER if it is present, falling back to a provided redirect otherwise.

  Derek Prior

• ActionController::TestCase will be moved to it's own gem in Rails 5.1

  With the speed improvements made to ActionDispatch::IntegrationTest we no longer need to keep two separate code bases for testing controllers. In Rails 5.1 ActionController::TestCase will be deprecated and moved into a gem outside of Rails source.

  This is a documentation deprecation so that going forward so new tests will use ActionDispatch::IntegrationTest instead of ActionController::TestCase.

  Eileen M. Uchitelle

• Add a response_format option to ActionDispatch::DebugExceptions to configure the format of the response when errors occur in development mode.

  If response_format is :default the debug info will be rendered in an HTML page. In the other hand, if the provided value is :api the debug info will be rendered in the original response format.

  Jorge Bejar

• Change the protect_from_forgery prepend default to false

  Per this comment https://github.com/rails/rails/pull/18334#issuecomment-69234050 we want protect_from_forgery to default to prepend: false.

  protect_from_forgery will now be insterted into the callback chain at the point it is called in your application. This is useful for cases where you want to protect_from_forgery after you perform required authentication callbacks or other callbacks that are required to run after forgery protection.

  If you want protect_from_forgery callbacks to always run first, regardless of position they are called in your application then you can add prepend: true to your protect_from_forgery call.

  Example:

  protect_from_forgery prepend: true
  

  Eileen M. Uchitelle

• In url_for, never append a question mark to the URL when the query string is empty anyway. (It used to do that when called like url_for(controller: 'x', action: 'y', q: {}).)

  Paul Grayson

• Catch invalid UTF-8 querystring values and respond with BadRequest

  Check querystring params for invalid UTF-8 characters, and raise an ActionController::BadRequest error if present. Previously these strings would typically trigger errors further down the stack.

  Grey Baker

• Parse RSS/ATOM responses as XML, not HTML.

  Alexander Kaupanin

• Show helpful message in BadRequest exceptions due to invalid path parameter encodings.

  Fixes #21923.

  Agis Anastasopoulos

• Add the ability of returning arbitrary headers to ActionDispatch::Static

  Now ActionDispatch::Static can accept HTTP headers so that developers will have control of returning arbitrary headers like 'Access-Control-Allow-Origin' when a response is delivered. They can be configured with #config:

  config.public_file_server.headers = { "Cache-Control" => "public, max-age=60", "Access-Control-Allow-Origin" => "http://rubyonrails.org" }

  Yuki Nishijima

• Allow multiple root routes in same scope level. Example:

  root 'blog#show', constraints: ->(req) { Hostname.blog_site?(req.host) }
  root 'landing#show'
  

  Rafael Sales

• Fix regression in mounted engine named routes generation for app deployed to a subdirectory. relative_url_root was prepended to the path twice (e.g. "/subdir/subdir/engine_path" instead of "/subdir/engine_path")

  Fixes #20920. Fixes #21459.

  Matthew Erhard

• ActionDispatch::Response#new no longer applies default headers. If you want default headers applied to the response object, then call ActionDispatch::Response.create. This change only impacts people who are directly constructing an ActionDispatch::Response object.

• Accessing mime types via constants like Mime::HTML is deprecated. Please change code like this:

  Mime::HTML

  To this:

  Mime[:html]

  This change is so that Rails will not manage a list of constants, and fixes an issue where if a type isn't registered you could possibly get the wrong object.

  Mime[:html] is available in older versions of Rails, too, so you can safely change libraries and plugins and maintain compatibility with multiple versions of Rails.

• url_for does not modify its arguments when generating polymorphic URLs.

  Bernerd Schaefer

• Make it easier to opt in to config.force_ssl and config.ssl_options by making them less dangerous to try and easier to disable.

  SSL redirect:

  • Move :host and :port options within redirect: { … }. Deprecate.
  • Introduce :status and :body to customize the redirect response. The 301 permanent default makes it difficult to test the redirect and back out of it since browsers remember the 301. Test with a 302 or 307 instead, then switch to 301 once you're confident that all is well.

  HTTP Strict Transport Security (HSTS):

  • Shorter max-age. Shorten the default max-age from 1 year to 180 days, the low end for https://www.ssllabs.com/ssltest/ grading and greater than the 18-week minimum to qualify for browser preload lists.
  • Disabling HSTS. Setting hsts: false now sets hsts { expires: 0 } instead of omitting the header. Omitting does nothing to disable HSTS since browsers hang on to your previous settings until they expire. Sending { hsts: { expires: 0 }} flushes out old browser settings and actually disables HSTS: http://tools.ietf.org/html/rfc6797#section-6.1.1
  • HSTS Preload. Introduce preload: true to set the preload flag, indicating that your site may be included in browser preload lists, including Chrome, Firefox, Safari, IE11, and Edge. Submit your site: https://hstspreload.appspot.com

  Jeremy Daer

• Update ActionController::TestSession#fetch to behave more like ActionDispatch::Request::Session#fetch when using non-string keys.

  Jeremy Friesen

• Using strings or symbols for middleware class names is deprecated. Convert things like this:

  middleware.use "Foo::Bar"

  to this:

  middleware.use Foo::Bar

• ActionController::TestSession now accepts a default value as well as a block for generating a default value based off the key provided.

  This fixes calls to session#fetch in ApplicationController instances that take more two arguments or a block from raising ArgumentError: wrong number of arguments (2 for 1) when performing controller tests.

  Matthew Gerrior

• Fix ActionController::Parameters#fetch overwriting KeyError returned by default block.

  Jonas Schuber Erlandsson, Roque Pinel

• ActionController::Parameters no longer inherits from HashWithIndifferentAccess

  Inheriting from HashWithIndifferentAccess allowed users to call any enumerable methods on Parameters object, resulting in a risk of losing the permitted? status or even getting back a pure Hash object instead of a Parameters object with proper sanitization.

  By not inheriting from HashWithIndifferentAccess, we are able to make sure that all methods that are defined in Parameters object will return a proper Parameters object with a correct permitted? flag.

  Prem Sichanugrist

• Replaced ActiveSupport::Concurrency::Latch with Concurrent::CountDownLatch from the concurrent-ruby gem.

  Jerry D'Antonio

• Add ability to filter parameters based on parent keys.

  # matches {credit_card: {code: "xxxx"}}
  # doesn't match {file: { code: "xxxx"}}
  config.filter_parameters += [ "credit_card.code" ]
  

  See #13897.

  Guillaume Malette

• Deprecate passing first parameter as Hash and default status code for head method.

  Mehmet Emin İNAÇ

• AddsRack::Utils::ParameterTypeError and Rack::Utils::InvalidParameterError to the rescue_responses hash in ExceptionWrapper (Rack recommends integrators serve 400s for both of these).

  Grey Baker

• Add support for API only apps. ActionController::API is added as a replacement of ActionController::Base for this kind of applications.

  Santiago Pastorino & Jorge Bejar

• Remove assigns and assert_template. Both methods have been extracted into a gem at https://github.com/rails/rails-controller-testing.

  See #18950.

  Alan Guo Xiang Tan

• FileHandler and Static middleware initializers accept index argument to configure the directory index file name. Defaults to index (as in index.html).

  See #20017.

  Eliot Sykes

• Deprecate :nothing option for render method.

  Mehmet Emin İNAÇ

• Fix rake routes not showing the right format when nesting multiple routes.

  See #18373.

  Ravil Bayramgalin

• Add ability to override default form builder for a controller.

  class AdminController < ApplicationController
    default_form_builder AdminFormBuilder
  end
  

  Kevin McPhillips

• For actions with no corresponding templates, render head :no_content instead of raising an error. This allows for slimmer API controller methods that simply work, without needing further instructions.

  See #19036.

  Stephen Bussey

• Provide friendlier access to request variants.

  request.variant = :phone
  request.variant.phone?  # true
  request.variant.tablet? # false
  
  request.variant = [:phone, :tablet]
  request.variant.phone?                  # true
  request.variant.desktop?                # false
  request.variant.any?(:phone, :desktop)  # true
  request.variant.any?(:desktop, :watch)  # false
  

  George Claghorn

• Fix regression where a gzip file response would have a Content-type, even when it was a 304 status code.

  See #19271.

  Kohei Suzuki

• Fix handling of empty X_FORWARDED_HOST header in raw_host_with_port.

  Previously, an empty X_FORWARDED_HOST header would cause Actiondispatch::Http:URL.raw_host_with_port to return nil, causing Actiondispatch::Http:URL.host to raise a NoMethodError.

  Adam Forsyth

• Allow Bearer as token-keyword in Authorization-Header.

  Aditionally to Token, the keyword Bearer is acceptable as a keyword for the auth-token. The Bearer keyword is described in the original OAuth RFC and used in libraries like Angular-JWT.

  See #19094.

  Peter Schröder

• Drop request class from RouteSet constructor.

  If you would like to use a custom request class, please subclass and implement the request_class method.

  tenderlove@ruby-lang.org

• Fallback to ENV['RAILS_RELATIVE_URL_ROOT'] in url_for.

  Fixed an issue where the RAILS_RELATIVE_URL_ROOT environment variable is not prepended to the path when url_for is called. If SCRIPT_NAME (used by Rack) is set, it takes precedence.

  Fixes #5122.

  Yasyf Mohamedali

• Partitioning of routes is now done when the routes are being drawn. This helps to decrease the time spent filtering the routes during the first request.

  Guo Xiang Tan

• Fix regression in functional tests. Responses should have default headers assigned.

  See #18423.

  Jeremy Kemper, Yves Senn

• Deprecate AbstractController#skip_action_callback in favor of individual skip_callback methods (which can be made to raise an error if no callback was removed).

  Iain Beeston

• Alias the ActionDispatch::Request#uuid method to ActionDispatch::Request#request_id. Due to implementation, config.log_tags = [:request_id] also works in substitute for config.log_tags = [:uuid].

  David Ilizarov

• Change filter on /rails/info/routes to use an actual path regexp from rails and not approximate javascript version. Oniguruma supports much more extensive list of features than javascript regexp engine.

  Fixes #18402.

  Ravil Bayramgalin

• Non-string authenticity tokens do not raise NoMethodError when decoding the masked token.

  Ville Lautanala

• Add http_cache_forever to Action Controller, so we can cache a response that never gets expired.

  arthurnn

• ActionController#translate supports symbols as shortcuts. When a shortcut is given it also performs the lookup without the action name.

  Max Melentiev

• Expand ActionController::ConditionalGet#fresh_when and stale? to also accept a collection of records as the first argument, so that the following code can be written in a shorter form.

  # Before
  def index
    @articles = Article.all
    fresh_when(etag: @articles, last_modified: @articles.maximum(:updated_at))
  end
  
  # After
  def index
    @articles = Article.all
    fresh_when(@articles)
  end
  

  claudiob

• Explicitly ignored wildcard verbs when searching for HEAD routes before fallback

  Fixes an issue where a mounted rack app at root would intercept the HEAD request causing an incorrect behavior during the fall back to GET requests.

  Example:

  draw do
      get '/home' => 'test#index'
      mount rack_app, at: '/'
  end
  head '/home'
  assert_response :success
  

  In this case, a HEAD request runs through the routes the first time and fails to match anything. Then, it runs through the list with the fallback and matches get '/home'. The original behavior would match the rack app in the first pass.

  Terence Sun

• Migrating xhr methods to keyword arguments syntax in ActionController::TestCase and ActionDispatch::Integration

  Old syntax:

  xhr :get, :create, params: { id: 1 }
  

  New syntax example:

  get :create, params: { id: 1 }, xhr: true
  

  Kir Shatrov

• Migrating to keyword arguments syntax in ActionController::TestCase and ActionDispatch::Integration HTTP request methods.

  Example:

  post :create, params: { y: x }, session: { a: 'b' }
  get :view, params: { id: 1 }
  get :view, params: { id: 1 }, format: :json
  

  Kir Shatrov

• Preserve default url options when generating URLs.

  Fixes an issue that would cause default_url_options to be lost when generating URLs with fewer positional arguments than parameters in the route definition.

  Tekin Suleyman

• Deprecate *_via_redirect integration test methods.

  Use follow_redirect! manually after the request call for the same behavior.

  Aditya Kapoor

• Add ActionController::Renderer to render arbitrary templates outside controller actions.

  Its functionality is accessible through class methods render and renderer of ActionController::Base.

  Ravil Bayramgalin

• Support :assigns option when rendering with controllers/mailers.

  Ravil Bayramgalin

• Default headers, removed in controller actions, are no longer reapplied on the test response.

  Jonas Baumann

• Deprecate all *_filter callbacks in favor of *_action callbacks.

  Rafael Mendonça França

• Allow you to pass prepend: false to protect_from_forgery to have the verification callback appended instead of prepended to the chain. This allows you to let the verification step depend on prior callbacks.

  Example:

  class ApplicationController < ActionController::Base
    before_action :authenticate
    protect_from_forgery prepend: false, unless: -> { @authenticated_by.oauth? }
  
    private
      def authenticate
        if oauth_request?
          # authenticate with oauth
          @authenticated_by = 'oauth'.inquiry
        else
          # authenticate with cookies
          @authenticated_by = 'cookie'.inquiry
        end
      end
  end
  

  Josef Šimánek

• Remove ActionController::HideActions.

  Ravil Bayramgalin

• Remove respond_to/respond_with placeholder methods, this functionality has been extracted to the responders gem.

  Carlos Antonio da Silva

• Remove deprecated assertion files.

  Rafael Mendonça França

• Remove deprecated usage of string keys in URL helpers.

  Rafael Mendonça França

• Remove deprecated only_path option on *_path helpers.

  Rafael Mendonça França

• Remove deprecated NamedRouteCollection#helpers.

  Rafael Mendonça França

• Remove deprecated support to define routes with :to option that doesn't contain #.

  Rafael Mendonça França

• Remove deprecated ActionDispatch::Response#to_ary.

  Rafael Mendonça França

• Remove deprecated ActionDispatch::Request#deep_munge.

  Rafael Mendonça França

• Remove deprecated ActionDispatch::Http::Parameters#symbolized_path_parameters.

  Rafael Mendonça França

• Remove deprecated option use_route in controller tests.

  Rafael Mendonça França

• Ensure append_info_to_payload is called even if an exception is raised.

  Fixes an issue where when an exception is raised in the request the additional payload data is not available.

  See:

  • #14903
  • https://github.com/roidrage/lograge/issues/37

  Dieter Komendera, Margus Pärt

• Correctly rely on the response's status code to handle calls to head.

  Robin Dupret

• Using head method returns empty response_body instead of returning a single space " ".

  The old behavior was added as a workaround for a bug in an early version of Safari, where the HTTP headers are not returned correctly if the response body has a 0-length. This is been fixed since and the workaround is no longer necessary.

  Fixes #18253.

  Prathamesh Sonpatki

• Fix how polymorphic routes works with objects that implement to_model.

  Travis Grathwell

• Stop converting empty arrays in params to nil.

  This behavior was introduced in response to CVE-2012-2660, CVE-2012-2694 and CVE-2013-0155

  ActiveRecord now issues a safe query when passing an empty array into a where clause, so there is no longer a need to defend against this type of input (any nils are still stripped from the array).

  Chris Sinjakli

• Fixed usage of optional scopes in url helpers.

  Alex Robbin

• Fixed handling of positional url helper arguments when format: false.

  Fixes #17819.

  Andrew White, Tatiana Soukiassian

Please check 4-2-stable for previous changes.