Make inheritance of map.resources :only/:except options behave more predictably

Signed-off-by: Michael Koziarski <michael@koziarski.com>

actionpack/lib/action_controller/resources.rb

@@ -42,7 +42,7 @@ module ActionController
   #
   # Read more about REST at http://en.wikipedia.org/wiki/Representational_State_Transfer
   module Resources
-    INHERITABLE_OPTIONS = :namespace, :shallow, :only, :except
+    INHERITABLE_OPTIONS = :namespace, :shallow, :actions
 
     class Resource #:nodoc:
       DEFAULT_ACTIONS = :index, :create, :new, :edit, :show, :update, :destroy
@@ -119,7 +119,7 @@ module ActionController
       end
 
       def has_action?(action)
-        !DEFAULT_ACTIONS.include?(action) || action_allowed?(action)
+        !DEFAULT_ACTIONS.include?(action) || @options[:actions].nil? || @options[:actions].include?(action)
       end
 
       protected
@@ -135,29 +135,24 @@ module ActionController
         end
 
         def set_allowed_actions
-          only, except = @options.values_at(:only, :except)
-          @allowed_actions ||= {}
+          only    = @options.delete(:only)
+          except  = @options.delete(:except)
 
-          if only == :all || except == :none
-            only = nil
-            except = []
+          if only && except
+            raise ArgumentError, 'Please supply either :only or :except, not both.'
+          elsif only == :all || except == :none
+            options[:actions] = DEFAULT_ACTIONS
           elsif only == :none || except == :all
-            only = []
-            except = nil
-          end
-
-          if only
-            @allowed_actions[:only] = Array(only).map(&:to_sym)
+            options[:actions] = []
+          elsif only
+            options[:actions] = DEFAULT_ACTIONS & Array(only).map(&:to_sym)
           elsif except
-            @allowed_actions[:except] = Array(except).map(&:to_sym)
+            options[:actions] = DEFAULT_ACTIONS - Array(except).map(&:to_sym)
+          else
+            # leave options[:actions] alone
           end
         end
 
-        def action_allowed?(action)
-          only, except = @allowed_actions.values_at(:only, :except)
-          (!only || only.include?(action)) && (!except || !except.include?(action))
-        end
-
         def set_prefixes
           @path_prefix = options.delete(:path_prefix)
           @name_prefix = options.delete(:name_prefix)

actionpack/test/controller/resources_test.rb

@@ -971,6 +971,32 @@ class ResourcesTest < Test::Unit::TestCase
     end
   end
 
+  def test_nested_resource_ignores_only_option
+    with_routing do |set|
+      set.draw do |map|
+        map.resources :products, :only => :show do |product|
+          product.resources :images, :except => :destroy
+        end
+      end
+
+      assert_resource_allowed_routes('images', { :product_id => '1' },                    { :id => '2' }, [:index, :new, :create, :show, :edit, :update], :destroy, 'products/1/images')
+      assert_resource_allowed_routes('images', { :product_id => '1', :format => 'xml' },  { :id => '2' }, [:index, :new, :create, :show, :edit, :update], :destroy, 'products/1/images')
+    end
+  end
+
+  def test_nested_resource_ignores_except_option
+    with_routing do |set|
+      set.draw do |map|
+        map.resources :products, :except => :show do |product|
+          product.resources :images, :only => :destroy
+        end
+      end
+
+      assert_resource_allowed_routes('images', { :product_id => '1' },                    { :id => '2' }, :destroy, [:index, :new, :create, :show, :edit, :update], 'products/1/images')
+      assert_resource_allowed_routes('images', { :product_id => '1', :format => 'xml' },  { :id => '2' }, :destroy, [:index, :new, :create, :show, :edit, :update], 'products/1/images')
+    end
+  end
+
   protected
     def with_restful_routing(*args)
       with_routing do |set|