Rails - Jun 2006 - I need help with my 1st sortable list!

Ill keep it brief.  Dragging an item is working but dropping and 
updating the list gives me this error -

NoMethodError in AdminController#sort

You have a nil object when you didn''t expect it!
You might have expected an instance of Array.
The error occured while evaluating nil.each

#{RAILS_ROOT}/app/controllers/admin_controller.rb:171:in `sort''

# My view -

<ul id="price">
  <% @prices.each do |@price| %>
  <li id="price_<%= @price.id %>">
	<%= @price.service %>  <%= @price.price %>
  </li>
  <% end %>
</ul>

<p id="list-info"></p>

<%= sortable_element ''price'',
       :update => ''list-info'',
      :url => { :action => "sort", :id => @price },
      :complete => visual_effect(:highlight, ''pricelist'')
%>

# Controller -

def sort
  @price = Price.find(params[:price])
  @prices.each do |@price|
    @price.position = params[''price''].index(@price.id.to_s) +
1
    @price.save
  end
  render :nothing => true
end

# Model -

class Price < ActiveRecord::Base
  belongs_to :user
  acts_as_list :scope => :user
end


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Hi Rob,

I''m guessing it''s late where ever you''re writing from
;-)

Rob Balfour wrote:
> NoMethodError in AdminController#sort
> #{RAILS_ROOT}/app/controllers/admin_controller.rb:171:in `sort''
>
> # My view -
Why are you looking at the view?  Rails gave you the two lines above telling 
you to look in your controller.  One of them even tells you what line number 
in the controller, _and_ what method it''s in in case your editor
doesn''t
show line numbers.
> You have a nil object when you didn''t expect it!
> The error occured while evaluating nil.each
Any occurrances of ".each" in the code below?
> def sort
>  @price = Price.find(params[:price])
>  @prices.each do |@price|
>    @price.position =
params[''price''].index(@price.id.to_s) + 1
>    @price.save
>  end
>  render :nothing => true
> end
You''re not assigning anything to @prices before you try to enumerate
it''s
elements.

Best regards,
Bill

> You''re not assigning anything to @prices before you try to
enumerate
> it''s
> elements.
I''m not following sorry.  What do I need to assign?


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