On Thu, Feb 26, 2009 at 9:35 PM, Tim <[email protected]> wrote:
>
> Has anyone successfully used attachment_fu with rails 2.3 nested model
> forms?
Yes.
> I've never used attachment_fu before so I may be doing something wrong
> there not sure. Here's what I've got:
>
> class Product < ActiveRecord::Base
> has_one :cover_image
> accepts_nested_attributes_for :cover_image, :allow_destroy => true
> end
>
> class CoverImage < ActiveRecord::Base
> has_attachment :content_type => :image,
> :storage => :file_system,
> :path_prefix => 'public/images/covers
> end
Maybe you just omitted this, but I think your CoverImage should declare
belongs_to :product
standard rest controller action:
> def create
> @product = Product.new(params[:product])
>
> respond_to do |format|
> if @product.save
> flash[:notice] = 'Product was successfully created.'
> format.html { redirect_to(@product) }
> format.xml { render :xml => @product, :status
> => :created, :location => @product }
> else
> format.html { render :action => "new" }
> format.xml { render :xml => @product.errors, :status
> => :unprocessable_entity }
> end
> end
> end
>
> and the new form:
>
> <% form_for(:product, :url => products_path, :html => { :multipart =>
> true }) do |f| %>
> ...
> ...
> <% f.fields_for(:cover_image) do |c| %>
> <%= c.file_field :uploaded_data %>
> <% end %>
> ...
> ...
> <% end %>
Since you have @product in your controller, why not just use that in
form_for? Doing so will allow you to omit :url => products_path. Thus, you'd
have
<% form_for(@product, :html => { :multipart => true }) do |f| %>
> On submitting the form I get this error:
> ActiveRecord::AssociationTypeMismatch (CoverImage(#70223327600060)
> expected, got HashWithIndifferentAccess(#70223341431440)):
>
> Any thoughts greatly appreciated!
I don't know if any of that solves your problem, but that's how I'd do it.
Also, I relied on Ryan Daigle's blog post when I was doing nested
models/forms. Check it out:
http://ryandaigle.com/articles/2009/2/1/what-s-new-in-edge-rails-nested-attributes
Regards,
Craig
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