paperclip duplicate url error

Question

I'm attempting to upload an image via ajax using paperclip.

I'm using the qqfileuploader for the ajax stuff and it doesn't seem to have an option where I can define the parameter name for the post request.

The parameters sent from the ajax post are

qqfile=filename.jpg

so in my model, I have aliased qqfile to photo

  alias_attribute :qqfile, :photo
   has_attached_file :photo
   attr_accessible :title, :photo

when I upload a file via ajax, I get the following errors

 Parameters: {"qqfile"=>"Penguins.jpg"}
WARNING: Can't verify CSRF token authenticity
Creating scope :page. Overwriting existing method User.page.
  User Load (1.2ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 1 LIMIT 1
Creating scope :page. Overwriting existing method RoleUser.page.
Creating scope :page. Overwriting existing method Role.page.
  Role Load (1.4ms)  SELECT `roles`.* FROM `roles` INNER JOIN `role_users` ON `roles`.`id` = `role_users`.`role_id` WHERE `role_users`.`user_id` = 1
  SQL (0.7ms)  BEGIN
Creating scope :page. Overwriting existing method Task.page.
[paperclip] Duplicate URL for photo with /system/:attachment/:id/:style/:filename. This will clash with attachment defined in Recipe class

I'm not sure if the CSRF token will be an issue, there is a token on the page, so maybe I just need to be sending that, I assume I can get it is a variable with javascript?

But what is the deal with the duplicate url??? Am I not aliasing correctly? Can I not alias a paperclip object for some reason?

my controller is also very simple

def create
    @recipe = Recipe.new(params[:recipe])
    @recipe.author_id=current_user.id
    if @recipe.save
        return render :json => @recipe
    else
        return render :text => 'an error occured saving the recipe'
    end
  end

Can you provide (all) the exact calls of has_attached_file? — moritz
@mosch, I added the has_attached_file and attr_accessible, it's just the basics as far as I know. — pedalpete

Mike Yockey Mike Yockey · Accepted Answer · 2012-01-04T14:34:18

Rails generates a security token for POST events based on the user's session. If that token is missing or doesn't match what's expected, the session will be reset. See this:

http://guides.rubyonrails.org/security.html#csrf-countermeasures

As for the duplicate URL, are you sure your URL pattern is specific enough? It looks to me that if you upload a file with the same name for the same model instance you'd have a problem. It would help to see your controller code.

paperclip duplicate url error

1 Answers