Fix a nil error when a Project cannot save attachments.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3772 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/attachment.rb

@@ -150,7 +150,13 @@ class Attachment < ActiveRecord::Base
                               :file => file,
                               :description => attachment['description'].to_s.strip,
                               :author => User.current)
-        a.new_record? ? (obj.unsaved_attachments << a) : (attached << a)
+
+        if a.new_record?
+          obj.unsaved_attachments ||= []
+          obj.unsaved_attachments << a
+        else
+          attached << a
+        end
       end
     end
     {:files => attached, :unsaved => obj.unsaved_attachments}

test/unit/attachment_test.rb

@@ -63,4 +63,30 @@ class AttachmentTest < ActiveSupport::TestCase
     assert_equal 'f8139524ebb8f32e51976982cd20a85d', Attachment.disk_filename("test_accentué")[13..-1]
     assert_equal 'cbb5b0f30978ba03731d61f9f6d10011', Attachment.disk_filename("test_accentué.ça")[13..-1]
   end
+
+  context "Attachmnet#attach_files" do
+    should "add unsaved files to the object as unsaved attachments" do
+      # Max size of 0 to force Attachment creation failures
+      with_settings(:attachment_max_size => 0) do
+        # Mock out a file
+        @file = 'a_file.png'
+        @file.stubs(:size).returns(32)
+        @file.stubs(:original_filename).returns('a_file.png')
+        @file.stubs(:content_type).returns('image/png')
+        @file.stubs(:read).returns(false)
+        
+        @project = Project.generate!
+        response = Attachment.attach_files(@project, {
+                                             '1' => {'file' => @file, 'description' => 'test'},
+                                             '2' => {'file' => @file, 'description' => 'test'}
+                                           })
+
+        assert response[:unsaved].present?
+        assert_equal 2, response[:unsaved].length
+        assert response[:unsaved].first.new_record?
+        assert response[:unsaved].second.new_record?
+        assert_equal response[:unsaved], @project.unsaved_attachments
+      end
+    end
+  end
 end