Rails - Mar 2006 - update subset of my data

Please can someone put me out of my misery...
I am missing the point here:

I have a table of albums called: dealers
I have a table of images: popp_images

each dealer has 6 popp_images linked by foriegn key: albumid

Each dealer can login using user_engine engine
I restrict viewing for each dealer to their own images by assigning each 
dealer their own albumid.

I list their images with:

in my controller:

def list
     @dealers = Dealer.find_all
     @dealer = current_user.albumid
    @popp_image_pages, @popp_images = paginate :popp_images, :per_page 
=> 10
  end

in my view:

<%
odd_or_even = 0
for popp_image in @popp_images
odd_or_even = 1 - odd_or_even
%>
<% if (@dealer == nil) || (@dealer == popp_image.albumid)%>

this works fine.




I am stuck on updating multiple pop_images i.e the whole six in the 
album (dealer)
here''s what I have:

def update

     # @dealer assign to current users albumid
     @dealer = current_user.albumid
     @dealers = Dealer.find(params[:id], :include => :dealer)
     @dealer_images = PoppImage.find(params[:id], :include => :dealers)

    if @popp_image.update_attributes(params[:popp_image])
      flash[:notice] = ''Your image was successfully updated.''
      redirect_to :action => ''show'', :id => @popp_image
    else
      render :action => ''edit''
    end
  end

I get: Couldn''t find Dealer without an ID

probably dumb but.....
any ideas?
thanks

Peter

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