Added session(:on) to turn session management back on in a controller…

… subclass if the superclass turned it off (Peter Jones) [#136 state:resolved]

actionpack/lib/action_controller/session_management.rb

@@ -69,11 +69,16 @@ def session_options
       #   session :off, 
       #     :if => Proc.new { |req| !(req.format.html? || req.format.js?) }
       #
+      #   # turn the session back on, useful when it was turned off in the
+      #   # application controller, and you need it on in another controller
+      #   session :on
+      #
       # All session options described for ActionController::Base.process_cgi
       # are valid arguments.
       def session(*args)
         options = args.extract_options!
 
+        options[:disabled] = false if args.delete(:on)
         options[:disabled] = true if !args.empty?
         options[:only] = [*options[:only]].map { |o| o.to_s } if options[:only]
         options[:except] = [*options[:except]].map { |o| o.to_s } if options[:except]

actionpack/test/controller/session_management_test.rb

@@ -13,6 +13,19 @@ def tell
     end
   end
 
+  class SessionOffOnController < ActionController::Base
+    session :off
+    session :on, :only => :tell
+
+    def show
+      render :text => "done"
+    end
+
+    def tell
+      render :text => "done"
+    end
+  end
+
   class TestController < ActionController::Base
     session :off, :only => :show
     session :session_secure => true, :except => :show
@@ -100,6 +113,15 @@ def test_session_off_globally
     assert_equal false, @request.session_options
   end
 
+  def test_session_off_then_on_globally
+    @controller = SessionOffOnController.new
+    get :show
+    assert_equal false, @request.session_options
+    get :tell
+    assert_instance_of Hash, @request.session_options
+    assert_equal false, @request.session_options[:disabled]
+  end
+
   def test_session_off_conditionally
     @controller = TestController.new
     get :show