Don't cascade autosave validation to destroyed children. [#2761 state:resolved]

Signed-off-by: Eloy Duran <eloy.de.enige@gmail.com>

activerecord/lib/active_record/autosave_association.rb

@@ -245,6 +245,8 @@ module ActiveRecord
     # the parent, <tt>self</tt>, if it wasn't. Skips any <tt>:autosave</tt>
     # enabled records if they're marked_for_destruction?.
     def association_valid?(reflection, association)
+      return true if association.destroyed?
+
       unless valid = association.valid?
         if reflection.options[:autosave]
           unless association.marked_for_destruction?

activerecord/lib/active_record/base.rb

@@ -2813,6 +2813,11 @@ module ActiveRecord #:nodoc:
         @attributes.frozen?
       end
 
+      # Returns +true+ if the record has been destroyed.
+      def destroyed?
+        @destroyed
+      end
+
       # Returns duplicated record with unfreezed attributes.
       def dup
         obj = super

activerecord/test/cases/autosave_association_test.rb

@@ -563,6 +563,17 @@ class TestDestroyAsPartOfAutosaveAssociation < ActiveRecord::TestCase
       children.each { |child| child.mark_for_destruction }
       assert_difference("#{association_name.classify}.count", -2) { @pirate.save! }
     end
+    
+    define_method("test_should_skip_validation_on_the_#{association_name}_association_if_destroyed") do
+      @pirate.send(association_name).create!(:name => "#{association_name}_1")
+      children = @pirate.send(association_name)
+
+      children.each { |child| child.name = '' }
+      assert !@pirate.valid?
+
+      children.each { |child| child.destroy }
+      assert @pirate.valid?
+    end
 
     define_method("test_should_rollback_destructions_if_an_exception_occurred_while_saving_#{association_name}") do
       2.times { |i| @pirate.send(association_name).create!(:name => "#{association_name}_#{i}") }

activerecord/test/cases/base_test.rb

@@ -529,6 +529,7 @@ class BasicsTest < ActiveRecord::TestCase
     topic = Topic.find(1)
     assert_equal topic, topic.delete, 'topic.delete did not return self'
     assert topic.frozen?, 'topic not frozen after delete'
+    assert topic.destroyed?, 'topic not marked as being destroyed'
     assert_raise(ActiveRecord::RecordNotFound) { Topic.find(topic.id) }
   end
 
@@ -541,6 +542,7 @@ class BasicsTest < ActiveRecord::TestCase
     topic = Topic.find(1)
     assert_equal topic, topic.destroy, 'topic.destroy did not return self'
     assert topic.frozen?, 'topic not frozen after destroy'
+    assert topic.destroyed?, 'topic not marked as being destroyed'
     assert_raise(ActiveRecord::RecordNotFound) { Topic.find(topic.id) }
   end