Displaying a Carrierwave filename in the view

Question

I am trying to display the filename of a Carrierwave attachment in a Rails erb template. The following does not work:

<%= @page.form.filename %>
         


        

Answer 1

CarrierWave::SanitizedFile has a private original_filename method containing the filename of the uploaded file. (docs: http://rdoc.info/github/jnicklas/carrierwave/master/CarrierWave/SanitizedFile:original_filename)

After reading through this thread from the CarrierWave mailing list, none seemed to fit my needs. With something like

class Upload < ActiveRecord::Base
  mount_uploader :file, FileUploader
  # ...

I heavily modify the :file column value from the original filename. Due to this I decided to track the original filename in a separate column from the one bound to CarrierWave. In my FileUploader I simply added a reader that wraps the private original_filename method:

def original_file
  original_filename
end

I then added a before_create event to the Upload class (my Upload records are never modified, so a before_create is acceptable for my needs)

before_create do
  self.original_file = self.file.original_file
end