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Rails 4.0.0 (unreleased)

  • Determine the controller#action from only the matched path when using the shorthand syntax. Previously the complete path was used, which led to problems with nesting (scopes and namespaces). Fixes #7554.


    # this will route to questions#new
    scope ':locale' do
      get 'questions/new'

    Yves Senn

  • Remove support for parsing XML parameters from request. If you still want to parse XML parameters, please install `actionpack-xml_parser' gem.

    Prem Sichanugrist

  • Remove support for parsing YAML parameters from request.

    Aaron Patterson

  • Add a message when you have no routes defined to both rake routes and GET "/rails/info/routes" that lets you know you have none defined and links to the Rails guide on the topic.

    Steve Klabnik

  • Change image_alt method to replace underscores/hyphens to spaces in filenames.

    Previously, underscored filenames became alt="A_long_file_name_with_underscores" in HTML, which is poor for accessibility. For instance, Apple's VoiceOver Utility pronounces each underscore. A_long_file_name thus would be read as A underscore long underscore file underscore name. Now underscored or hyphenated filenames (both of which are very popular naming conventions) read more naturally in screen readers by converting both hyphens and underscores to spaces.


    # => <img alt="Underscored_file_name" src="/assets/underscored_file_name.png" />


    # => <img alt="Underscored file name" src="/assets/underscored_file_name.png" />

    Nick Cox

  • We don't support Ruby constant notation in the :controller option for route definitions. So, this raises an ArgumentError now:

    resources :posts, controller: "Admin::Posts" # WRONG

    Use path notation instead:

    resources :posts, controller: "admin/posts" # RIGHT

    Yves Senn

  • assert_template can be used to verify the locals of partials, which live inside a directory.

    # Prefixed partials inside directories worked and still work.
    assert_template partial: 'directory/_partial', locals: {name: 'John'}
    # This did not work but does now.
    assert_template partial: 'directory/partial', locals: {name: 'John'}

    Fixes #8516.

    Yves Senn

  • Fix content_tag_for with array HTML option. It would embed array as string instead of joining it like content_tag does:

    content_tag(:td, class: ["foo", "bar"]){}
    # => <td class="foo bar"></td>


    content_tag_for(:td, item, class: ["foo", "bar"])
    # => <td class="item [&quot;foo&quot;, &quot;bar&quot;]" id="item_1"></td>


    content_tag_for(:td, item, class: ["foo", "bar"])
    # => <td class="item foo bar" id="item_1"></td>

    Semyon Perepelitsa

  • Remove BestStandardsSupport middleware, !DOCTYPE html already triggers standards mode per and ChromeFrame header has been moved to config.action_dispatch.default_headers

    Guillermo Iguaran

  • Fix CSRF protection and current_url? helper to work with HEAD requests now that ActionDispatch::Head has been removed in favor of Rack::Head.

    Michiel Sikkes

  • Change asset_path to not include SCRIPT_NAME when it's used from a mounted engine. Fixes #8119.

    Piotr Sarnacki

  • Add JavaScript based routing path matcher to /rails/info/routes. Routes can now be filtered by whether or not they match a path.

    Richard Schneeman

  • Change the behavior of route defaults so that explicit defaults are no longer required where the key is not part of the path. For example:

    resources :posts, bucket_type: 'posts'

    will be required whenever constructing the url from a hash such as a functional test or using url_for directly. However using the explicit form alters the behavior so it's not required:

    resources :projects, defaults: { bucket_type: 'projects' }

    This changes existing behavior slightly in that any routes which only differ in their defaults will match the first route rather than the closest match.

    Andrew White

  • Add support for routing constraints other than Regexp and String. For example this now allows the use of arrays like this:

    get '/foo/:action', to: 'foo', constraints: { subdomain: %w[www admin] }

    or constraints where the request method returns an Fixnum like this:

    get '/foo', to: 'foo#index', constraints: { port: 8080 }

    Note that this only applies to constraints on the request - path constraints still need to be specified as Regexps as the various constraints are compiled into a single Regexp.

    Andrew White

  • Fix a bug in integration tests where setting the port via a url passed to the process method was ignored when constructing the request environment.

    Andrew White

  • Allow :selected to be set on date_select tag helper.

    Colin Burn-Murdoch

  • Fixed JSON params parsing regression for non-object JSON content.

    Dylan Smith

  • Extract ActionDispatch::PerformanceTest into You can add the gem to your Gemfile to keep using performance tests.

    gem 'rails-perftest'

    Yves Senn

  • Added view_cache_dependency API for declaring dependencies that affect cache digest computation.

    Jamis Buck

  • image_submit_tag will set alt attribute from image source if not specified.

    Nihad Abbasov

  • Do not generate local variables for partials without object or collection. Previously rendering a partial without giving :object or :collection would generate a local variable with the partial name by default.

    Carlos Antonio da Silva

  • Return the last valid, non-private IP address from the X-Forwarded-For, Client-IP and Remote-Addr headers, in that order. Document the rationale for that decision, and describe the options that can be passed to the RemoteIp middleware to change it. Fix #7979

    André Arko, Steve Klabnik, Alexey Gaziev

  • Do not append second slash to root_url when using trailing_slash: true Fix #8700


    root_url(trailing_slash: true) # =>


    root_url(trailing_slash: true) # =>

    Yves Senn

  • Allow to toggle dumps on error pages.

    Gosha Arinich

  • Fix a bug in content_tag_for that prevents it from working without a block.


  • Change the stylesheet of exception pages for development mode. Additionally display also the line of code and fragment that raised the exception in all exceptions pages.

    Guillermo Iguaran + Jorge Cuadrado

  • Do not append charset= parameter when head is called with a :content_type option. Fix #8661.

    Yves Senn

  • Added Mime::NullType class. This allows to use html?, xml?, json?, etc. when the format of the request is unknown, without raising an exception.

    Angelo Capilleri

  • Integrate the Journey gem into Action Dispatch so that the global namespace is not polluted with names that may be used as models.

    Andrew White

  • Extract support for email address obfuscation via :encode, :replace_at, and replace_dot options from the mail_to helper into the actionview-encoded_mail_to gem.

    Nick Reed + DHH

  • Handle :protocol option in stylesheet_link_tag and javascript_include_tag

    Vasiliy Ermolovich

  • Clear url helper methods when routes are reloaded. Andrew White

  • Fix a bug in ActionDispatch::Request#raw_post that caused env['rack.input'] to be read but not rewound.

    Matt Venables

  • Prevent raising EOFError on multipart GET request (IE issue). Adam Stankiewicz

  • Rename all action callbacks from *_filter to *_action to avoid the misconception that these callbacks are only suited for transforming or halting the response. With the new style, it's more inviting to use them as they were intended, like setting shared ivars for views.


    class PeopleController < ActionController::Base
      before_action :set_person,      except: [:index, :new, :create]
      before_action :ensure_permission, only: [:edit, :update]
        def set_person
          @person = current_account.people.find(params[:id])
        def ensure_permission

    The old *_filter methods still work with no deprecation notice.


  • Add cache_if and cache_unless for conditional fragment caching:


    <%= cache_if condition, project do %>
      <b>All the topics on this project</b>
      <%= render project.topics %>
    <% end %>
    # and
    <%= cache_unless condition, project do %>
      <b>All the topics on this project</b>
      <%= render project.topics %>
    <% end %>

    Stephen Ausman + Fabrizio Regini + Angelo Capilleri

  • Add filter capability to ActionController logs for redirect locations:

    config.filter_redirect << ''

    Fabrizio Regini

  • Fixed a bug that ignores constraints on a glob route. This was caused because the constraint regular expression is overwritten when the routes.rb file is processed. Fixes #7924

    Maura Fitzgerald

  • More descriptive error messages when calling render :partial with an invalid :layout argument.

    Fixes #8376.

    render partial: 'partial', layout: true
    # results in ActionView::MissingTemplate: Missing partial /true

    Yves Senn

  • Sweepers was extracted from Action Controller as rails-observers gem.

    Rafael Mendonça França

  • Add option flag to CacheHelper#cache to manually bypass automatic template digests:

    <% cache project, skip_digest: true do %>
    <% end %>

    Drew Ulmer

  • Do not sort Hash options in grouped_options_for_select. Sergey Kojin

  • Accept symbols as send_data :disposition value Elia Schito

  • Add i18n scope to distance_of_time_in_words. Steve Klabnik

  • assert_template:

    • is no more passing with empty string.
    • is now validating option keys. It accepts: :layout, :partial, :locals and :count.

    Roberto Soares

  • Allow setting a symbol as path in scope on routes. This is now allowed:

    scope :api do
      resources :users

    It is also possible to pass multiple symbols to scope to shorten multiple nested scopes:

    scope :api do
      scope :v1 do
        resources :users

    can be rewritten as:

    scope :api, :v1 do
      resources :users

    Guillermo Iguaran + Amparo Luna

  • Fix error when using a non-hash query argument named "params" in url_for.


    url_for(params: "") # => undefined method `reject!' for "":String


    url_for(params: "") # =>

    tumayun + Carlos Antonio da Silva

  • Render every partial with a new ActionView::PartialRenderer. This resolves issues when rendering nested partials. Fix #8197.

    Yves Senn

  • Introduce ActionView::Template::Handlers::ERB.escape_whitelist. This is a list of mime types where template text is not html escaped by default. It prevents Jack & Joe from rendering as Jack &amp; Joe for the whitelisted mime types. The default whitelist contains text/plain. Fix #7976.

    Joost Baaij

  • Fix input name when multiple: true and :index are set.


    check_box("post", "comment_ids", { multiple: true, index: "foo" }, 1)
    #=> <input name=\"post[foo][comment_ids]\" type=\"hidden\" value=\"0\" /><input id=\"post_foo_comment_ids_1\" name=\"post[foo][comment_ids]\" type=\"checkbox\" value=\"1\" />


    check_box("post", "comment_ids", { multiple: true, index: "foo" }, 1)
    #=> <input name=\"post[foo][comment_ids][]\" type=\"hidden\" value=\"0\" /><input id=\"post_foo_comment_ids_1\" name=\"post[foo][comment_ids][]\" type=\"checkbox\" value=\"1\" />

    Fix #8108.

    Daniel Fox, Grant Hutchins & Trace Wax

  • BestStandardsSupport middleware now appends it's X-UA-Compatible value to app's returned value if any. Fix #8086.

    Nikita Afanasenko

  • date_select helper accepts with_css_classes: true to add css classes similar with type of generated select tags.

    Pavel Nikitin

  • Only non-js/css under app/assets path will be included in default config.assets.precompile.

    Josh Peek

  • Remove support for the RAILS_ASSET_ID environment configuration (no longer needed now that we have the asset pipeline).

    Josh Peek

  • Remove old asset_path configuration (no longer needed now that we have the asset pipeline).

    Josh Peek

  • assert_template can be used to assert on the same template with different locals Fix #3675.

    Yves Senn

  • Remove old asset tag concatenation (no longer needed now that we have the asset pipeline).

    Josh Peek

  • Accept :remote as symbolic option for link_to helper. Riley Lynch

  • Warn when the :locals option is passed to assert_template outside of a view test case Fix #3415.

    Yves Senn

  • The Rack::Cache middleware is now disabled by default. To enable it, set config.action_dispatch.rack_cache = true and add gem rack-cache to your Gemfile.

    Guillermo Iguaran

  • ActionController::Base.page_cache_extension option is deprecated in favour of ActionController::Base.default_static_extension.

    Francesco Rodriguez

  • Action and Page caching has been extracted from Action Dispatch as actionpack-action_caching and actionpack-page_caching gems. Please read the file on both gems for the usage.

    Francesco Rodriguez

  • Failsafe exception returns text/plain. Steve Klabnik

  • Remove rack-cache dependency from Action Pack and declare it on Gemfile

    Guillermo Iguaran

  • Rename internal variables on ActionController::TemplateAssertions to prevent naming collisions. @partials, @templates and @layouts are now prefixed with an underscore. Fix #7459.

    Yves Senn

  • resource and resources don't modify the passed options hash. Fix #7777.

    Yves Senn

  • Precompiled assets include aliases from foo.js to foo/index.js and vice versa.

    # Precompiles phone-<digest>.css and aliases phone/index.css to phone.css.
    config.assets.precompile = [ 'phone.css' ]
    # Precompiles phone/index-<digest>.css and aliases phone.css to phone/index.css.
    config.assets.precompile = [ 'phone/index.css' ]
    # Both of these work with either precompile thanks to their aliases.
    <%= stylesheet_link_tag 'phone', media: 'all' %>
    <%= stylesheet_link_tag 'phone/index', media: 'all' %>

    Jeremy Kemper

  • assert_template is no more passing with what ever string that matches with the template name.

    Before when we have a template /layout/hello.html.erb, assert_template was passing with any string that matches. This behavior allowed false positive like:

    assert_template "layout"
    assert_template "out/hello"

    Now it only passes with:

    assert_template "layout/hello"
    assert_template "hello"

    Fixes #3849.


  • image_tag will set the same width and height for image if numerical value passed to size option.

    Nihad Abbasov

  • Deprecate Mime::Type#verify_request? and Mime::Type.browser_generated_types, since they are no longer used inside of Rails, they will be removed in Rails 4.1.

    Michael Grosser

  • ActionDispatch::Http::UploadedFile now delegates close to its tempfile. Sergio Gil

  • Add ActionController::StrongParameters, this module converts params hash into an instance of ActionController::Parameters that allows whitelisting of permitted parameters. Non-permitted parameters are forbidden to be used in Active Model by default For more details check the documentation of the module or the strong_parameters gem

    DHH + Guillermo Iguaran

  • Remove Integration between attr_accessible/attr_protected and ActionController::ParamsWrapper. ParamWrapper now wraps all the parameters returned by the class method attribute_names.

    Guillermo Iguaran

  • Log now displays the correct status code when an exception is raised. Fix #7646.

    Yves Senn

  • Allow pass couple extensions to ActionView::Template.register_template_handler call.

    Tima Maslyuchenko

  • Sprockets integration has been extracted from Action Pack to the sprockets-rails gem. rails gem is depending on sprockets-rails by default.

    Guillermo Iguaran

  • ActionDispatch::Session::MemCacheStore now uses dalli instead of the deprecated memcache-client gem. As side effect the autoloading of unloaded classes objects saved as values in session isn't supported anymore when mem_cache session store is used, this can have an impact in apps only when config.cache_classes is false.

    Arun Agrawal + Guillermo Iguaran

  • Support multiple etags in If-None-Match header. Travis Warlick

  • Allow to configure how unverified request will be handled using :with option in protect_from_forgery method.

    Valid unverified request handling methods are:

    • :exception - Raises ActionController::InvalidAuthenticityToken exception.
    • :reset_session - Resets the session.
    • :null_session - Provides an empty session during request but doesn't reset it completely. Used as default if :with option is not specified.

    New applications are generated with:

    protect_from_forgery with: :exception

    Sergey Nartimov

  • Add .ruby template handler, this handler simply allows arbitrary Ruby code as a template. Guillermo Iguaran

  • Add separator option for ActionView::Helpers::TextHelper#excerpt:

    excerpt('This is a very beautiful morning', 'very', separator: ' ', radius: 1)
    # => ...a very beautiful...

    Guirec Corbel

  • Added controller-level etag additions that will be part of the action etag computation Jeremy Kemper/DHH

    class InvoicesController < ApplicationController
      etag { current_user.try :id }
      def show
        # Etag will differ even for the same invoice when it's viewed by a different current_user
        @invoice = Invoice.find(params[:id])
  • Add automatic template digests to all CacheHelper#cache calls (originally spiked in the cache_digests plugin) DHH

  • When building a URL fails, add missing keys provided by Journey. Failed URL generation now returns a 500 status instead of a 404.

    Richard Schneeman

  • Deprecate availability of ActionView::RecordIdentifier in controllers by default. It's view specific and can be easily included in controllers manually if someone really needs it. Also deprecate calling ActionController::RecordIdentifier.dom_id and dom_class directly, in favor of ActionView::RecordIdentifier.dom_id and dom_class. RecordIdentifier will be removed from ActionController::Base in Rails 4.1.

    Piotr Sarnacki

  • Fix ActionView::RecordIdentifier to work as a singleton. Piotr Sarnacki

  • Deprecate Template#mime_type, it will be removed in Rails 4.1 in favor of #type. Piotr Sarnacki

  • Move vendored html-scanner from action_controller to action_view directory. If you require it directly, please use 'action_view/vendor/html-scanner', reference to 'action_controller/vendor/html-scanner' will be removed in Rails 4.1. Piot Sarnacki

  • Fix handling of date selects when using both disabled and discard options. Fixes #7431.

    Vasiliy Ermolovich

  • ActiveRecord::SessionStore is extracted out of Rails into a gem activerecord-session_store. Setting config.session_store to :active_record_store will no longer work and will break if the activerecord-session_store gem isn't available. Prem Sichanugrist

  • Fix select_tag when option_tags is nil. Fixes #7404.

    Sandeep Ravichandran

  • Add Request#formats=(extensions) that lets you set multiple formats directly in a prioritized order.

    Example of using this for custom iphone views with an HTML fallback:

    class ApplicationController < ActionController::Base
      before_filter :adjust_format_for_iphone_with_html_fallback
        def adjust_format_for_iphone_with_html_fallback
          request.formats = [ :iphone, :html ] if request.env["HTTP_USER_AGENT"][/iPhone/]


  • Add Routing Concerns to declare common routes that can be reused inside others resources and routes.

    Code before:

    resources :messages do
      resources :comments
    resources :posts do
      resources :comments
      resources :images, only: :index

    Code after:

    concern :commentable do
      resources :comments
    concern :image_attachable do
      resources :images, only: :index
    resources :messages, concerns: :commentable
    resources :posts, concerns: [:commentable, :image_attachable]

    DHH + Rafael Mendonça França

  • Add start_hour and end_hour options to the select_hour helper. Evan Tann

  • Raises an ArgumentError when the first argument in form_for contain nil or is empty.

    Richard Schneeman

  • Add 'X-Frame-Options' => 'SAMEORIGIN' 'X-XSS-Protection' => '1; mode=block' and 'X-Content-Type-Options' => 'nosniff' as default headers.

    Egor Homakov

  • Allow data attributes to be set as a first-level option for form_for, so you can write form_for @record, data: { behavior: 'autosave' } instead of form_for @record, html: { data: { behavior: 'autosave' } } DHH

  • Deprecate button_to_function and link_to_function helpers.

    We recommend the use of Unobtrusive JavaScript instead. For example:

    link_to "Greeting", "#", class: "nav_link"
    $(function() {
      $('.nav_link').click(function() {
        // Some complex code
        return false;


    link_to "Greeting", '#', onclick: "alert('Hello world!'); return false", class: "nav_link"

    for simple cases.

    Rafael Mendonça França

  • javascript_include_tag :all will now not include application.js if the file does not exists. Prem Sichanugrist

  • Send an empty response body when call head with status between 100 and 199, 204, 205 or 304.

    Armand du Plessis

  • Fixed issue with where digest authentication would not work behind a proxy. Arthur Smith

  • Added ActionController::Live. Mix it in to your controller and you can stream data to the client live. For example:

    class FooController < ActionController::Base
      include ActionController::Live
      def index
        100.times {
          # Client will see this as it's written
 "hello world\n"
          sleep 1

    Aaron Patterson

  • Remove ActionDispatch::Head middleware in favor of Rack::Head. Santiago Pastorino

  • Deprecate :confirm in favor of data: { confirm: "Text" } option for button_to, button_tag, image_submit_tag, link_to and submit_tag helpers.

    Carlos Galdino + Rafael Mendonça França

  • Show routes in exception page while debugging a RoutingError in development.

    Richard Schneeman + Mattt Thompson + Yves Senn

  • Add ActionController::Flash.add_flash_types method to allow people to register their own flash types. e.g.:

    class ApplicationController
      add_flash_types :error, :warning

    If you add the above code, you can use <%= error %> in an erb, and redirect_to /foo, error: 'message' in a controller.


  • Remove Active Model dependency from Action Pack. Guillermo Iguaran

  • Support unicode characters in routes. Route will be automatically escaped, so instead of manually escaping:

    get Rack::Utils.escape('こんにちは') => 'home#index'

    You just have to write the unicode route:

    get 'こんにちは' => 'home#index'


  • Return proper format on exceptions. Santiago Pastorino

  • Allow to use mounted_helpers (helpers for accessing mounted engines) in ActionView::TestCase. Piotr Sarnacki

  • Include mounted_helpers (helpers for accessing mounted engines) in ActionDispatch::IntegrationTest by default. Piotr Sarnacki

  • Extracted redirect logic from ActionController::ForceSSL::ClassMethods.force_ssl into ActionController::ForceSSL#force_ssl_redirect

    Jeremy Friesen

  • Make possible to use a block in button_to if the button text is hard to fit into the name parameter, e.g.:

    <%= button_to [:make_happy, @user] do %>
      Make happy <strong><%= %></strong>
    <% end %>
    # => "<form method="post" action="/users/1/make_happy" class="button_to">
    #      <div>
    #        <button type="submit">
    #          Make happy <strong>Name</strong>
    #        </button>
    #      </div>
    #    </form>"

    Sergey Nartimov

  • Change a way of ordering helpers from several directories. Previously, when loading helpers from multiple paths, all of the helpers files were gathered into one array an then they were sorted. Helpers from different directories should not be mixed before loading them to make loading more predictable. The most common use case for such behavior is loading helpers from engines. When you load helpers from application and engine Foo, in that order, first rails will load all of the helpers from application, sorted alphabetically and then it will do the same for Foo engine.

    Piotr Sarnacki

  • truncate now always returns an escaped HTML-safe string. The option :escape can be used as false to not escape the result.

    Li Ellis Gallardo + Rafael Mendonça França

  • truncate now accepts a block to show extra content when the text is truncated. Li Ellis Gallardo

  • Add week_field, week_field_tag, month_field, month_field_tag, datetime_local_field, datetime_local_field_tag, datetime_field and datetime_field_tag helpers. Carlos Galdino

  • Add color_field and color_field_tag helpers. Carlos Galdino

  • assert_generates, assert_recognizes, and assert_routing all raise Assertion instead of RoutingError David Chelimsky

  • URL path parameters with invalid encoding now raise ActionController::BadRequest. Andrew White

  • Malformed query and request parameter hashes now raise ActionController::BadRequest. Andrew White

  • Add divider option to grouped_options_for_select to generate a separator optgroup automatically, and deprecate prompt as third argument, in favor of using an options hash. Nicholas Greenfield

  • Add time_field and time_field_tag helpers which render an input[type="time"] tag. Alex Soulim

  • Removed old text helper apis from highlight, excerpt and word_wrap. Jeremy Walker

  • Templates without a handler extension now raises a deprecation warning but still defaults to ERB. In future releases, it will simply return the template contents. Steve Klabnik

  • Deprecate :disable_with in favor of data: { disable_with: "Text" } option from submit_tag, button_tag and button_to helpers.

    Carlos Galdino + Rafael Mendonça França

  • Remove :mouseover option from image_tag helper. Rafael Mendonça França

  • The select method (select tag) forces :include_blank if required is true and display size is one and multiple is not true. Angelo Capilleri

  • Copy literal route constraints to defaults so that url generation know about them. The copied constraints are :protocol, :subdomain, :domain, :host and :port.

    Andrew White

  • respond_to and respond_with now raise ActionController::UnknownFormat instead of directly returning head 406. The exception is rescued and converted to 406 in the exception handling middleware. Steven Soroka

  • Allows assert_redirected_to to match against a regular expression. Andy Lindeman

  • Add backtrace to development routing error page. Richard Schneeman

  • Replace include_seconds boolean argument with include_seconds: true option in distance_of_time_in_words and time_ago_in_words signature. Dmitriy Kiriyenko

  • Make current object and counter (when it applies) variables accessible when rendering templates with :object / :collection. Carlos Antonio da Silva

  • JSONP now uses mimetype text/javascript instead of application/json. omjokine

  • Allow to lazy load default_form_builder by passing a String instead of a constant. Piotr Sarnacki

  • Session arguments passed to process calls in functional tests are now merged into the existing session, whereas previously they would replace the existing session. This change may break some existing tests if they are asserting the exact contents of the session but should not break existing tests that only assert individual keys.

    Andrew White

  • Add index method to FormBuilder class. Jorge Bejar

  • Remove the leading \n added by textarea on assert_select. Santiago Pastorino

  • Changed default value for config.action_view.embed_authenticity_token_in_remote_forms to false. This change breaks remote forms that need to work also without javascript, so if you need such behavior, you can either set it to true or explicitly pass authenticity_token: true in form options.

  • Added ActionDispatch::SSL middleware that when included force all the requests to be under HTTPS protocol. Rafael Mendonça França

  • Add include_hidden option to select tag. With include_hidden: false select with multiple attribute doesn't generate hidden input with blank value. Vasiliy Ermolovich

  • Removed default size option from the text_field, search_field, telephone_field, url_field, email_field helpers. Philip Arndt

  • Removed default cols and rows options from the text_area helper. Philip Arndt

  • Adds support for layouts when rendering a partial with a given collection. serabe

  • Allows the route helper root to take a string argument. For example, root 'pages#main'. bcardarella

  • Forms of persisted records use always PATCH (via the _method hack). fxn

  • For resources, both PATCH and PUT are routed to the update action. fxn

  • Don't ignore force_ssl in development. This is a change of behavior - use a :if condition to recreate the old behavior.

    class AccountsController < ApplicationController
      force_ssl if: :ssl_configured?
      def ssl_configured?

    Pat Allan

  • Adds support for the PATCH verb:

    • Request objects respond to patch?.
    • Routes have a new patch method, and understand :patch in the existing places where a verb is configured, like :via.
    • New method patch available in functional tests.
    • If :patch is the default verb for updates, edits are tunneled as PATCH rather than as PUT, and routing acts accordingly.
    • New method patch_via_redirect available in integration tests.


  • Integration tests support the OPTIONS method. Jeremy Kemper

  • expires_in accepts a must_revalidate flag. If true, "must-revalidate" is added to the Cache-Control header. fxn

  • Add date_field and date_field_tag helpers which render an input[type="date"] tag Olek Janiszewski

  • Adds image_url, javascript_url, stylesheet_url, audio_url, video_url, and font_url to assets tag helper. These URL helpers will return the full path to your assets. This is useful when you are going to reference this asset from external host. Prem Sichanugrist

  • Default responder will now always use your overridden block in respond_with to render your response. Prem Sichanugrist

  • Allow value_method and text_method arguments from collection_select and options_from_collection_for_select to receive an object that responds to :call, such as a proc, to evaluate the option in the current element context. This works the same way with collection_radio_buttons and collection_check_boxes.

    Carlos Antonio da Silva + Rafael Mendonça França

  • Add collection_check_boxes form helper, similar to collection_select: Example:

    collection_check_boxes :post, :author_ids, Author.all, :id, :name
    # Outputs something like:
    <input id="post_author_ids_1" name="post[author_ids][]" type="checkbox" value="1" />
    <label for="post_author_ids_1">D. Heinemeier Hansson</label>
    <input id="post_author_ids_2" name="post[author_ids][]" type="checkbox" value="2" />
    <label for="post_author_ids_2">D. Thomas</label>
    <input name="post[author_ids][]" type="hidden" value="" />

    The label/check_box pairs can be customized with a block.

    Carlos Antonio da Silva + Rafael Mendonça França

  • Add collection_radio_buttons form helper, similar to collection_select: Example:

    collection_radio_buttons :post, :author_id, Author.all, :id, :name
    # Outputs something like:
    <input id="post_author_id_1" name="post[author_id]" type="radio" value="1" />
    <label for="post_author_id_1">D. Heinemeier Hansson</label>
    <input id="post_author_id_2" name="post[author_id]" type="radio" value="2" />
    <label for="post_author_id_2">D. Thomas</label>

    The label/radio_button pairs can be customized with a block.

    Carlos Antonio da Silva + Rafael Mendonça França

  • check_box with :form html5 attribute will now replicate the :form attribute to the hidden field as well. Carlos Antonio da Silva

  • Turn off verbose mode of rack-cache, we still have X-Rack-Cache to check that info. Closes #5245. Santiago Pastorino

  • label form helper accepts for: nil to not generate the attribute. Carlos Antonio da Silva

  • Add :format option to number_to_percentage. Rodrigo Flores

  • Add config.action_view.logger to configure logger for Action View. Rafael Mendonça França

  • Deprecated ActionController::Integration in favour of ActionDispatch::Integration.

  • Deprecated ActionController::IntegrationTest in favour of ActionDispatch::IntegrationTest.

  • Deprecated ActionController::PerformanceTest in favour of ActionDispatch::PerformanceTest.

  • Deprecated ActionController::AbstractRequest in favour of ActionDispatch::Request.

  • Deprecated ActionController::Request in favour of ActionDispatch::Request.

  • Deprecated ActionController::AbstractResponse in favour of ActionDispatch::Response.

  • Deprecated ActionController::Response in favour of ActionDispatch::Response.

  • Deprecated ActionController::Routing in favour of ActionDispatch::Routing.

  • check_box helper with disabled: true will generate a disabled hidden field to conform with the HTML convention where disabled fields are not submitted with the form. This is a behavior change, previously the hidden tag had a value of the disabled checkbox. Tadas Tamosauskas

  • favicon_link_tag helper will now use the favicon in app/assets by default. Lucas Caton

  • ActionView::Helpers::TextHelper#highlight now defaults to the HTML5 mark element. Brian Cardarella

Please check 3-2-stable for previous changes.

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