Carrierwave filename keeps changing on update_attributes

Question

I have model Company and company has mounted carrierwave uploader Logo.

class Company < ActiveRecord::Base
  mount_uploader :logo, LogoUploader


        

Answer 1

I experienced the same and figured it out that an uploader class' filename method should not set a new filename unless original_filename presents. CarrierWave has a relevant wiki page about filename which doesn't directly address this issue, but is enough to get a clue.

For example,

This code changes the filename field every time the model is updated.

class SampleUploader < CarrierWave::Uploader::Base
  def filename
    "#{Time.now.strftime('%Y%m%d%H%M%S')}.jpg"
  end
end

However this extra if statement prevents the former behaviour.

class SampleUploader < CarrierWave::Uploader::Base
  def filename
    "#{Time.now.strftime('%Y%m%d%H%M%S')}.jpg" if original_filename.present?
  end
end