On Aug 4, 2011, at 4:24 PM, Kleber Shimabuku wrote:
A friend of mine just realize that the problem is related to the
javascript add function.
And now I'm trying to fix it.
<div><%= add_child_link "Add Part", f, :item %></div>
Look outside of this line. Are you sure you are inside of the
`form_for @your_model do |f|` loop at the moment you see this line?
The error sounds like you're outside of it, and thus builder.object
(inside the helper) doesn't resolve to @ your_model.
Walter
on my Item model I hold the accepts_nested_attributes_for :item_parts
but I still getting a error
undefined method `klass' for nil:NilClass
this error refers to the object variable on this:
def add_child_link(name, form_builder, association)
object =
form_builder
.object.class.reflect_on_association(association).klass.new
...
end
any help?
On Aug 4, 8:13 pm, Kleber Shimabuku <[email protected]> wrote:
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?
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