Problem time_select with fields_for

Hi,

I’m using fields_for and a time_select but he isn’t saving the time in
the db just 00:00:00
All the other fields are fine, but the time_field isn’t working:s
This is my code:

<% form_for :activity, @activity,:url => {:action => “create”} do
|activity_form| %>

<%= activity_form.time_select :datum_1_twrak_van, :order =>[ :hour, :minute ]%> <%= activity_form.time_select :datum_1_twrak_tot, :order =>[ :hour, :minute ],:include_blank => true %>

<% fields_for :vervolg, @vervolg do |vervolg_form| %>

<%= vervolg_form.time_select :interventies_pc_pol_aanvangsuur_dag_1, :order =>[ :hour, :minute ],:include_blank => true %> <% end %>

<% end %>


my migrate file 1

t.column :datum_1_twrak_van, :time
t.column :datum_1_twrak_tot, :time

my migrate file 2
t.column :interventies_pc_pol_aanvangsuur_dag_1, :time

Can someone find my problem?