1 files changed, 121 insertions, 2 deletions
diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index f6ffe45490..61c608972c 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,3 +1,122 @@
+*   When a `respond_to` collector with a block doesn't have a response, then
+    a `:no_content` response should be rendered.  This brings the default
+    rendering behavior introduced by https://github.com/rails/rails/issues/19036
+    to controller methods employing `respond_to`
+
+    *Justin Coyne*
+
+*   Add `ActionController::Parameters#dig` on Ruby 2.3 and greater, which
+    behaves the same as `Hash#dig`.
+
+    *Sean Griffin*
+
+*   Add request headers in the payload of the `start_processing.action_controller`
+    and `process_action.action_controller` notifications.
+
+    *Gareth du Plooy*
+
+*   Add `action_dispatch_integration_test` load hook. The hook can be used to
+    extend `ActionDispatch::IntegrationTest` once it has been loaded.
+
+    *Yuichiro Kaneko*
+
+*   Update default rendering policies when the controller action did
+    not explicitly indicate a response.
+
+    For API controllers, the implicit render always renders "204 No Content"
+    and does not account for any templates.
+
+    For other controllers, the following conditions are checked:
+
+    First, if a template exists for the controller action, it is rendered.
+    This template lookup takes into account the action name, locales, format,
+    variant, template handlers, etc. (see +render+ for details).
+
+    Second, if other templates exist for the controller action but is not in
+    the right format (or variant, etc.), an <tt>ActionController::UnknownFormat</tt>
+    is raised. The list of available templates is assumed to be a complete
+    enumeration of all the possible formats (or variants, etc.); that is,
+    having only HTML and JSON templates indicate that the controller action is
+    not meant to handle XML requests.
+
+    Third, if the current request is an "interactive" browser request (the user
+    navigated here by entering the URL in the address bar, submiting a form,
+    clicking on a link, etc. as opposed to an XHR or non-browser API request),
+    <tt>ActionView::UnknownFormat</tt> is raised to display a helpful error
+    message.
+
+    Finally, it falls back to the same "204 No Content" behavior as API controllers.
+
+    *Godfrey Chan*, *Jon Moss*, *Kasper Timm Hansen*, *Mike Clark*, *Matthew Draper*
+
+## Rails 5.0.0.beta3 (February 24, 2016) ##
+
+*   Add application/gzip as a default mime type.
+
+    *Mehmet Emin İNAÇ*
+
+*   Add request encoding and response parsing to integration tests.
+
+    What previously was:
+
+    ```ruby
+    require 'test_helper'
+
+    class ApiTest < ActionDispatch::IntegrationTest
+      test 'creates articles' do
+        assert_difference -> { Article.count } do
+          post articles_path(format: :json),
+            params: { article: { title: 'Ahoy!' } }.to_json,
+            headers: { 'Content-Type' => 'application/json' }
+        end
+
+        assert_equal({ 'id' => Article.last.id, 'title' => 'Ahoy!' }, JSON.parse(response.body))
+      end
+    end
+    ```
+
+    Can now be written as:
+
+    ```ruby
+    require 'test_helper'
+
+    class ApiTest < ActionDispatch::IntegrationTest
+      test 'creates articles' do
+        assert_difference -> { Article.count } do
+          post articles_path, params: { article: { title: 'Ahoy!' } }, as: :json
+        end
+
+        assert_equal({ 'id' => Article.last.id, 'title' => 'Ahoy!' }, response.parsed_body)
+      end
+    end
+    ```
+
+    Passing `as: :json` to integration test request helpers will set the format,
+    content type and encode the parameters as JSON.
+
+    Then on the response side, `parsed_body` will parse the body according to the
+    content type the response has.
+
+    Currently JSON is the only supported MIME type. Add your own with
+    `ActionDispatch::IntegrationTest.register_encoder`.
+
+    *Kasper Timm Hansen*
+
+*   Add image/svg+xml as a default mime type.
+
+    *DHH*
+
+## Rails 5.0.0.beta2 (February 01, 2016) ##
+
+*   Add `-g` and `-c` options to `bin/rails routes`. These options return the url `name`, `verb` and
+    `path` field that match the pattern or match a specific controller.
+
+    Deprecate `CONTROLLER` env variable in `bin/rails routes`.
+
+    See #18902.
+
+    *Anton Davydov* & *Vipul A M*
+
 *   Response etags to always be weak: Prefixes 'W/' to value returned by
    `ActionDispatch::Http::Cache::Response#etag=`, such that etags set in
    `fresh_when` and `stale?` are weak.
@@ -171,11 +290,11 @@
 *   Accessing mime types via constants like `Mime::HTML` is deprecated. Please
     change code like this:
 
-      Mime::HTML
+        Mime::HTML
 
     To this:
 
-      Mime[:html]
+        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