Hi all,

I'm new to ruby on rails. i've been following the Simply Rails 2 Book and got me going to creating my own application. I am having trouble trying to get a simple edit/update going. Everytime I hit submit, I get the following error:

Code:
Couldn't find Content without an ID

Request
Parameters:
{"format"=>"#<content:0x4d3daac>",
 "commit"=>"Update",
 "_method"=>"put",
 "authenticity_token"=>"axBSuIWVTMRB2CKcmMO59tqtOlMtXRSXQQ7xeHEMd78=",
 "content"=>{"title"=>"About Us",
 "verbiage"=>"The company was formed in 2008 by seven healthcare professionals involved in the areas of acute care hospital,
 rehab hospital,
 skilled nursing and rehab,
 out-patient clinics,
 and Home Health Care. Update"}}
I have a form: edit.html.erb
Code:
<h2>Edit content</h2>
<% form_for @content do |f| %>
<p>
  <%= f.label :title %><br/>
  <%= f.text_field :title %>
</p>
<p>
  <%= f.label :verbiage %><br/>
  <%= f.text_area :verbiage %><br/>
</p>

<%= f.submit "Update"%>
<% end %>
Here is my controller:
Code:
class ContentsController < ApplicationController
  layout 'subpages'
  
  def new
    @content = Content.new
  end
  

  def create
    @content = Content.new(params[:content])
    @content.save
  end

  def edit
    @content = Content.find(params[:id])
  end
  
  def update
      @content = Content.find(params[:id])
      @content.update_attributes(params[:content])
      redirect_to :action => "edit", :id => @content.id

  end

end

i've been trying to figure this out for 3 days but no luck. The solutions on the web and books seem to explain that I need to have id passed to the controller, but I thought form_for @content should already take care of that. I would appreciate all the help i can get. Thanks.