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    <p>I do have a project in the works that is successfully using Paperclip and polymorphic associations. Let me show you what I have, and maybe you can apply it to your project:</p> <pre><code>class Song &lt; ActiveRecord::Base ... has_one :artwork, :as =&gt; :artable, :dependent =&gt; :destroy accepts_nested_attributes_for :artwork ... end class Album &lt; ActiveRecord::Base ... has_one :artwork, :as =&gt; :artable, :dependent =&gt; :destroy accepts_nested_attributes_for :artwork ... end class Artwork &lt; ActiveRecord::Base belongs_to :artable, :polymorphic =&gt; true attr_accessible :artwork_content_type, :artwork_file_name, :artwork_file_size, :artwork # Paperclip has_attached_file :artwork, :styles =&gt; { :small =&gt; "100", :full =&gt; "400" } validates_attachment_content_type :artwork, :content_type =&gt; 'image/jpeg' end </code></pre> <p>the songs form and the albums form include this as a partial:</p> <pre><code>&lt;div class="field"&gt; &lt;%= f.fields_for :artwork do |artwork_fields| %&gt; &lt;%= artwork_fields.label :artwork %&gt;&lt;br /&gt; &lt;%= artwork_fields.file_field :artwork %&gt; &lt;% end %&gt; </code></pre> <p></p> <p>don't forget to include :html => { :multipart => true } with the form</p> <p>artworks_controller.rb</p> <pre><code>class ArtworksController &lt; ApplicationController def create @artwork = Artwork.new(params[:artwork]) if @artwork.save redirect_to @artwork.artable, notice: 'Artwork was successfully created.' else redirect_to @artwork.artable, notice: 'An error ocurred.' end end end </code></pre> <p>and finally, an excerpt from songs_controller.rb:</p> <pre><code>def new @song = Song.new @song.build_artwork end </code></pre>
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    1. COahh just what I needed, thanks Brett!
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    2. CO@kaigth, sorry I gave you such a runaround. I should have just started with this. Best wishes.
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    3. COcan the styles for attachments in Artwork model be different for Album and song based on polymorphic relation?
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