Rails - Apr 2010 - nested form gets inserted twice on every create

Hi,

I''m trying to ''add appointments with schedules''

so I have

class Appointment < ActiveRecord::Base
   has_many :schedules
   accepts_nested_attributes_for :schedules, :allow_destroy => true
end

and

class Schedule < ActiveRecord::Base
  has_paper_trail
  belongs_to :appointment
end

and my AppointmentsController has this create action

  def create
    resource = new_resource
    if resource.update_attributes(params[:appointment])
      flash[:notice]= "Perfect"
    else
      flash[:warning]= "Errors"
    end
  end

and my appointments/new.html.erb looks like

<% semantic_form_for resource,
                     :html => { :class => "oxform" },
                     :url =>        resources_url do |form| %>
   <%= render :partial => "/appointments/form", :locals => {
:form =>
form } %>
   <% form.buttons do %>
      <input class="cta button" type="submit"
value="Create"/>
   <% end %>
<% end %>

Finally my _form.html.erb''s are like

appointments/_form.html.erb:

<% form.inputs :appointment_form do %>
  <%= form.input :title %>
  <% form.semantic_fields_for :fields do |fld| %>
    <%= fld.input :location %>
    <%= fld.input :category %>
  <% end %>
  <li>
    <ul id="schedules">
      <% form.fields_for :schedules do |builder| %>
        <%= render ''schedule'', :fld => builder %>
      <% end %>
      <li>
        <%= link_to_add_schedule("Add Schedule", form, :schedules)
%>
      </li>
    </ul>
  </li>

appointments/_schedule.html.erb:

<li class="schedule">
  <ol>
    <%= fld.input :first_date, :as => :string %>
    <%= fld.input :last_date, :as => :string %>
    <%= fld.input :all_day_event, :as => :oxboolean %>
    <%= fld.input :repeating, :as => :oxboolean %>
    <%= fld.hidden_field :id %>
    <%= fld.hidden_field :_destroy %>
    <%= link_to_function "Drop Schedule",
"removeSchedule(this)" %>
  </ol>
</li>

You in ''the know'' already have spotted that I''m
trying to use Formtastic
and Ian Whites fabulous resources_controller -

Like I said in the subject: when I POST the appointments/new - I get two
schedules added every time - even though the params look like this:

Processing AppointmentsController#create (for 127.0.0.1 at 2010-04-28
13:20:00) [POST]
  Parameters: {"appointment"=>{"title"=>"og endnu
et",
"schedules_attributes"=>{"0"=>{"first_date"=>"",
"last_date"=>""}}},
"authenticity_token"=>"RO3cWfhF+2wfH6hXzG0HwDByHLcxl9yAOMBLPk0PRaI=",
"calendar_id"=>"16"}

Every thing is fine - I just get that extra schedules added to my
schedules table - as a way for Rails 2.3.5 to say "thank you" :)

Have I involuntarily stepped on a bug - most likely I''ve just mixed
gems
and plugins that do not like each other/Rails 2.3.5, or left the obvious
''some statement'' untouched, grinning back at me from somewhere
deep
within vendor/..

Please if someone has the upperhand on this one - throw me rope <:)


Cheers,
Walther
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