I have a Post model which has_many :photos. While User creating a new post, user should be also able to select photos (multiple) for given post. I am using RAILS 3.2.9, nested_form, carrierwave and jquery-fileupload-rails gem and ryan bates railscasts<http://railscasts.com/episodes/381-jquery-file-upload> as a guide. All seems to be set up correctly, but problem is, when User choose a photo (a fileupload() function is triggered), new Post and new Photo record are created. Once I press "create post" another post record is again created. Any help/idea how to get rid off with the first Post record once user select the photo? Thank you very much. Petr class Post < ActiveRecord::Base has_many :photos, as: :attachable, :dependent => :destroy accepts_nested_attributes_for :photos, :allow_destroy => trueend class Photo < ActiveRecord::Base belongs_to :attachable, polymorphic: true attr_accessible :image, :description, :post_id, :attachable_id, :attachable_type mount_uploader :image, PhotoUploaderend # Post Controllerdef create @post = Post.new(params[:post]) @post.saveend # _form.html.erb<%= nested_form_for @post, :html => { :multipart => true } do |f| %> <%= f.fields_for :photos do |photo| %> <% if photo.object.new_record? %> <%= photo.file_field :image, id: "fileupload" %> <%= photo.hidden_field :id %> <%= photo.hidden_field :attachable_id %> <%= photo.hidden_field :attachable_type %> <% else %> <%= image_tag(photo.object.image.url(:thumb)) %> <%= photo.check_box :_destroy %> <% end %> <% end %><% end %> #application.js $(''#fileupload'').fileupload(); -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/qYlaeOva4qQJ. For more options, visit https://groups.google.com/groups/opt_out.