Rails with Paperclip ignore empty attachments

Question

I am using paperclip with rails and it works fine, however my problem is when updating if the i don't reselect the image, then it saves the record as nil. Here is my code:

<div class="form-group">
  <div class="media">
    <%= image_tag program_avatar(b), :id => 'avatar', :class => 'thumbnail media-object pull-left', :height => 100, :width => 100 %>
    <div class="media-body padding-top-40">
      <%= b.file_field :avatar, :class => 'file-upload' %>
    </div>
  </div>
</div>

<div class="form-group">
  <div class="media">
    <%= image_tag program_banner(b), :class => 'thumbnail media-object pull-left', :height => 100, :width => 300 %>
    <div class="media-body padding-top-40">
      <%= b.file_field :banner, :class => 'file-upload' %>
    </div>
  </div>
</div>

and the controller:

respond_to do |format|
  if @program.update(program_params)
    format.html { redirect_to(program_path(@program), :notice => "Program updated") }
    format.js { render :json => @program.json }
  else
    format.html { render :new, :notice => "Error please try again" }
    format.js { render :json => "Error please try again" }
  end
end

The models:

Book model:

has_one :book_content, :dependent => :destroy  
accepts_nested_attributes_for :book_content, :allow_destroy => true

Book_content model:

has_attached_file :avatar, :styles => { :medium => "300x300>", :thumb => "100x100>" }, :default_url => "/images/:style/missing.png"
has_attached_file :banner, :styles => { :header => "600x150", :setting => "300x100"  }, :default_url => "/images/:style/found.jpeg"
belongs_to :book

this is a nested form, but because it has multiple attachments so i cannot use reject_if

How can tell paperclip to keep the original files if no file is selected?

Thank you

What do relevant parts of your model look like? For example, model, it's associations, and associated model, call to `has_attachment`. — Chris Peters, Sep 12 '13 at 12:39

score 4 · Accepted Answer · answered Sep 20 '13 at 17:19

4

After some research I found that my problem is not passing the id in the params, so I have this:

params.require(:book).permit(:book_name, book_content_attributes: [:media, :rating, :book_id])

Changed it to this:

params.require(:book).permit(:book_name, book_content_attributes: [:id, :media, :rating, :book_id])

notice the added :id, and now it works fine.

answered Sep 20 '13 at 17:19

Wahtever

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Maaan!!! That's what I was looking for the whole day yestarday!! Thank you!! You've made my day! – aprok Sep 25 '13 at 09:24
I have a question to you. I have in my _form.html.erb <%= f.link_to_add "Add image", :poster_images %>. And each time,when I'm trying to edit my poster, I have so many links to add image as I have images in my existing poster. Any ideas how to fix it? – aprok Sep 25 '13 at 09:49
@ArseniiProhorchik - try moving the `link_to_add` outside the `fields_for` block but still inside the main form. – Wahtever Sep 25 '13 at 18:09
It is there.. still seeing it by default while editing poster. – aprok Sep 26 '13 at 10:49

Rails with Paperclip ignore empty attachments

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