Merge pull request rails#47840 from p8/docs/actionpack-intros

Add documentation intros for Action Controller and Action Dispatch

Author: p8

actionpack/lib/action_controller.rb

@@ -6,6 +6,13 @@
 require "action_controller/metal/strong_parameters"
 require "action_controller/metal/exceptions"
 
+# = Action Controller
+#
+# Action Controller is a module of Action Pack.
+#
+# Action Controller provides a base controller class that can be subclassed to
+# implement filters and actions to handle requests. The result of an action is
+# typically content generated from views.
 module ActionController
   extend ActiveSupport::Autoload
 

actionpack/lib/action_dispatch.rb

@@ -35,6 +35,14 @@ module Rack
   autoload :Test, "rack/test"
 end
 
+# = Action Dispatch
+#
+# Action Dispatch is a module of Action Pack.
+#
+# Action Dispatch parses information about the web request, handles
+# routing as defined by the user, and does advanced processing related to HTTP
+# such as MIME-type negotiation, decoding parameters in POST, PATCH, or PUT
+# bodies, handling HTTP caching logic, cookies and sessions.
 module ActionDispatch
   include ActiveSupport::Deprecation::DeprecatedConstantAccessor
   extend ActiveSupport::Autoload

railties/lib/rails/api/task.rb

@@ -36,7 +36,9 @@ class Task < RDoc::Task
           include: %w(
             README.rdoc
             lib/abstract_controller/**/*.rb
+            lib/action_controller.rb
             lib/action_controller/**/*.rb
+            lib/action_dispatch.rb
             lib/action_dispatch/**/*.rb
           )
         },