Do not ignore alias names of transient attributes. (Fixes #311)

  #311

lib/factory_girl/attribute_assigner.rb

@@ -66,7 +66,7 @@ def override_names
 
     def alias_names_to_ignore
       @attribute_list.reject(&:ignored).map do |attribute|
-        override_names.map {|override| attribute.name if attribute.alias_for?(override) && attribute.name != override }
+        override_names.map {|override| attribute.name if attribute.alias_for?(override) && attribute.name != override && !ignored_attribute_names.include?(override) }
       end.flatten.compact
     end
   end

spec/acceptance/transient_attributes_spec.rb

@@ -108,3 +108,36 @@
     FactoryGirl.build(:user).name.should == "John Doe 2"
   end
 end
+
+describe "assigning values from a transient attribute" do
+  before do
+    define_class("User") do
+      attr_accessor :foo_id, :foo_name
+    end
+
+    define_class("Foo") do
+      attr_accessor :id, :name
+      def initialize(id, name)
+        @id = id
+        @name = name
+      end
+    end
+
+    FactoryGirl.define do
+      factory :user do
+        ignore do
+          foo { Foo.new('id-of-foo', 'name-of-foo')}
+        end
+
+        foo_id   { foo.id }
+        foo_name { foo.name }
+      end
+    end
+  end
+
+  it "does not ignore an _id attribute that is an alias for a transient attribute" do
+    user = FactoryGirl.build(:user, :foo => Foo.new('passed-in-id-of-foo', 'passed-in-name-of-foo'))
+    user.foo_id.should == 'passed-in-id-of-foo'
+    user.foo_name.should == 'passed-in-name-of-foo'
+  end
+end