heroku with carrierwave dropbox storage and rails showing always same image - ruby-on-rails

Question

so I have a web application that runs fine in development, and with carrierwave and imagemagick I make some changes on the photos that I need to upload. The problem is that when on heroku when i ask for the main version of the photo it still gives me the thumb version
class BannerUploader < CarrierWave::Uploader::Base
include CarrierWave::MiniMagick
if Rails.env.development?
storage :file
else
storage :dropbox
end
def store_dir
if version_name.nil?
"uploads/#{model.class.to_s.underscore}/#{mounted_as}"
else
"uploads/#{model.class.to_s.underscore}/#{mounted_as}_#{version_name}"
end
end
process convert: :jpg
process :crop
process resize_to_limit: [1200, 260]
def crop
if model.crop_x.present?
manipulate! do |img|
x = model.crop_x.to_i
y = model.crop_y.to_i
w = model.crop_w.to_i
h = model.crop_h.to_i
r = model.crop_r.to_i
img.rotate r
img.crop([[w, h].join('x'), [x, y].join('+')].join('+'))
end
end
end
version :thumb do
process resize_to_fill: [640, 320]
end
def extension_whitelist
%w(jpg jpeg png)
end
def filename
if original_filename
"#{secure_token}.#{file.extension}"
elsif file
file.filename
end
end
protected
def secure_token
var = :"##{mounted_as}_secure_token"
model.instance_variable_get(var) or model.instance_variable_set(var, SecureRandom.uuid)
end
end
this is my uploader
then in my views i have image_tag(model.banner_url(:thumb) to get the thumb version and image_tag #model.banner_url to get the large version. The problem is that the second one on my local machine runs just fine, but when on heroku it gives me the same image of the first one. It does create the right folders and files, and it does crop them right, but it doesn't retrieve the correct one. I am using the
gem 'dropbox-sdk-v2', '~> 0.0.3'
gem 'carrierwave-dropbox', '~> 2.0'
as heroku storage, with obviously a dropbox account

Answer 1

Often you'll want to add different versions of the same file. The
classic example is image thumbnails. There is built in support for
this*
I think the problem is the way you define the store_dir method.
Define it this way:
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
And also CarrierWave documentation recommends to use the uploader this way:
uploader = AvatarUploader.new
uploader.store!(my_file) # size: 1024x768
uploader.url # => '/url/to/my_file.png' # size: 800x800
uploader.thumb.url # => '/url/to/thumb_my_file.png' # size: 200x200
Source: https://github.com/carrierwaveuploader/carrierwave