Strange behavior when override a default attribute, maybe a bug?

Hello, I have a strange behavior and don’t know why.

If I override attributes from AcitveRecord object like below:

def end_date=(date)
date = date.to_date unless date.blank?

def end_date
date = read_attribute(:end_date)
I18n.localize(date) if date.present?

Everything will work fine but when I try call text_field in a form_for
block I get the database value and ignore end_date getter.

<%= f.text_field :end_date, :class=>“date”, :size=>“10” %>

The text_field will be filled with 2008-12-10 (mysql date) instead of
10/12/2008 ( I18n localized)

Anyone know why we get this behavior?

Some idea? I still don’t understand why text_field load values from
database instead of model.rb

Sorry for duplicated threads, it was a mistake, I opened new one here