[Rails] Help to render partial from fieds_for with nested attributes

[Kleber Shimabuku]

I'm using nested_attributes and trying to implement the add/remove
fields on-the-fly throu ajax following Ryan Bates screencast about
Nested Model (#196)

Doing this, it works fine:

    <%= f.fields_for :item_parts do |parts_form| %>
      <p class="fields">
        <%= parts_form.label :part_id %>
        <%= parts_form.select :part_id, Part.all.collect { |x|
[ x.title, x.id ]} %><br />
        <%= parts_form.hidden_field :_destroy %>
        <%= link_to_remove_fields "remove", parts_form %>
      </p>
    <% end %>

But when trying to pass the form fields to a partial like this, it
returns the following error:

undefined method `part_id' for #<Part:0x00000103c4fed8>

Extracted source (around line #3):

    1: <p class="fields">
    2:   <%= f.label :part_id %>
    3:   <%= f.select :part_id, Part.all.collect { |x| [ x.title,
x.id ]} %><br />
    4:   <%= f.hidden_field :_destroy %>
    5:   <%= link_to_remove_fields "remove", f %>
    6: </p>

The relevant code for the form calls the partial:


    <%= f.fields_for :item_parts do |parts_form| %>
      <%= render 'part_fields', :f => parts_form %>
    <% end %>

partial: /part_fields.html.erb

    <p class="fields">
      <%= f.label :part_id %>
      <%= f.select :part_id, Part.all.collect { |x| [ x.title, x.id ]}
%><br />
      <%= f.hidden_field :_destroy %>
      <%= link_to_remove_fields "remove", f %>
    </p>


So, any help on what I am doing wrong at this point?

-- 
You received this message because you are subscribed to the Google Groups "Ruby 
on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to 
rubyonrails-talk+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/rubyonrails-talk?hl=en.