fix for being over zealous with the fields to null, now can update fi…

…elds to false

lib/dm-salesforce/connection.rb

@@ -69,7 +69,7 @@ def make_object(klass_name, values)
       obj = klass.new
       values.each do |property,value|
         field = field_name_for(klass_name, property)
-        if value.blank?
+        if value.nil? or value == ""
           obj.fieldsToNull.push(field)
         else
           obj.send("#{field}=", value)

spec/models/contact_spec.rb

@@ -9,6 +9,7 @@ def self.default_repository_name
   property :last_name, String
   property :email, String
   property :irc_nick, String
+  property :has_opted_out_of_email, Boolean
 
   repository(:salesforce) do
     property :id,    String, :serial => true
@@ -93,5 +94,14 @@ def self.default_repository_name
       c.errors.on(:last_name).should == ["Required fields are missing: [LastName]"]
     end
   end
+
+  describe "when updating a field to false" do
+    it "should update" do
+      c = Contact.create(:first_name => 'Per', :last_name => 'Son', :email => "person@company.com", :has_opted_out_of_email => true)
+      c.update_attributes(:has_opted_out_of_email => false)
+      c.should be_valid
+      c.has_opted_out_of_email.should_not be_true
+    end
+  end
 end