> I have a similar problem,

> In the Helper I added

> module AssetsHelper
> def date_received_form_column(record, input_name)
>   select_date record[:date_received],:name=>input_name, :include_blank
> => true
> end

> To create a "null" on the drop down...  The null now appears in tho
> HTML, and the data is reformatted correctly. But, the date is never
> updated in the database (for Nulls or any data changes)
> .
> The log has no errors, but the trace record is below ... Note that I
> do have numerous dates, the only one overriden is "Date_recieved" ...
> It was set to 4/2/2000 ..  But alas, no update to the database.

> Note that the trace shows date"=>{"month"=>"4", "day"=>"2",
> "year"=>"2000"}, seems to refer to the "date_received"  which I set to
> 4/2/2000 ..

> Processing AssetsController#update (for 127.0.0.1 at 2007-04-24
> 08:41:10) [PUT]
>   Session ID: 312a7c8f9387cb3ba443304768084054
>   Parameters: {"commit"=>"Update", "date"=>{"month"=>"4", "day"=>"2",
> "year"=>"2000"}, "_method"=>"put", "action"=>"update", "id"=>"7",
> "controller"=>"assets", "associated_id"=>"",
> "record"=>{"name"=>"0004569", "date_excessed(5i)"=>"00",
> "orig_cost"=>"0",
> "issuances"=>{"1177418430937"=>{"date_installed(5i)"=>"40",
> "Orig_Issuance"=>"", "patch_method"=>{"id"=>""},
> "date_removed(1i)"=>"2007", "date_removed(2i)"=>"4",
> "date_installed(1i)"=>"2007", "use"=>{"id"=>""},
> "date_removed(3i)"=>"24", "customer"=>{"id"=>""},
> "date_installed(2i)"=>"4", "named_server"=>{"id"=>""},
> "date_installed(3i)"=>"24", "date_removed(4i)"=>"08",
> "room"=>{"id"=>""}, "lan_desk"=>"false", "date_installed(4i)"=>"08",
> "holding_account"=>{"id"=>""}, "date_removed(5i)"=>"40"},
> "4707"=>{"date_installed(5i)"=>"26", "Orig_Issuance"=>"",
> "id"=>"4707", "patch_method"=>{"id"=>""}, "date_removed(1i)"=>"2007",
> "date_removed(2i)"=>"4", "date_installed(1i)"=>"2007",
> "use"=>{"id"=>""}, "customer"=>{"id"=>""}, "date_removed(3i)"=>"24",
> "date_installed(2i)"=>"4", "room"=>{"id"=>""}, "lan_desk"=>"false",
> "named_server"=>{"id"=>""}, "date_removed(4i)"=>"08",
> "date_installed(3i)"=>"24", "date_installed(4i)"=>"08",
> "holding_account"=>{"id"=>""}, "date_removed(5i)"=>"26"},
> "4708"=>{"date_installed(5i)"=>"30", "Orig_Issuance"=>"",
> "id"=>"4708", "patch_method"=>{"id"=>""}, "date_removed(1i)"=>"2007",
> "date_removed(2i)"=>"4", "date_installed(1i)"=>"2007",
> "use"=>{"id"=>""}, "date_removed(3i)"=>"24", "customer"=>{"id"=>""},
> "date_installed(2i)"=>"4", "named_server"=>{"id"=>""},
> "room"=>{"id"=>""}, "date_removed(4i)"=>"08",
> "date_installed(3i)"=>"24", "lan_desk"=>"false",
> "holding_account"=>{"id"=>""}, "date_removed(5i)"=>"30",
> "date_installed(4i)"=>"08"}}, "date_last_inventory(1i)"=>"2007",
> "date_last_inventory(2i)"=>"4", "date_last_inventory(3i)"=>"24",
> "date_last_inventory(4i)"=>"08", "tagged"=>"false",
> "date_last_inventory(5i)"=>"26", "date_excessed(1i)"=>"2003",
> "orig_po"=>"dr = 2000\\4\\2", "date_excessed(2i)"=>"4",
> "date_excessed(3i)"=>"1", "xmodel"=>{"name"=>"HP LaserJet Series II",
> "brand"=>{"id"=>"26"}, "category"=>{"id"=>"6"},
> "model_specs"=>{"514"=>{"id"=>"430"}}, "id"=>"300",
> "standard"=>{"id"=>"40"}, "part_number"=>"33440A"},
> "date_excessed(4i)"=>"00"}}