Carrierwave Reset after Reboot - ruby-on-rails

Question

Both the app and db (mongodb) servers were rebooted last night. All carrierwave mounted uploaders are returning the default images for avatars, even though the files still exist.
I am using fog storage on Rackspace CDN. Each user model contains a field of avatar_filename. I tried running user.avatar.recreate_versions! however that errors out due to nil.
Is there any way to restore my images (they still exist!) and prevent this from happening again? I have searched around but it doesn't look like this is a common prom.
In my user model:
# Avatar
mount_uploader :avatar, AvatarUploader
AvatarUploader:
class AvatarUploader < CarrierWave::Uploader::Base
include CarrierWave::RMagick
storage :fog
def default_url
"/assets/users/profile-default_#{version_name}.png"
end
# Large
version :large do
resize_to_limit(600, 600)
end
# Small
version :small do
process :crop
resize_to_fill(140, 140)
end
# Thumbnail
version :thumb, :from_version => :small do
resize_to_fill(35, 35)
end
def extension_white_list
%w(jpg jpeg png)
end
def filename
if #filename_created
#filename_created
elsif original_filename
#name ||= Digest::MD5.hexdigest(File.dirname(current_path))
#filename_created = "a_#{timestamp}_#{#name}.#{file.extension}"
#filename_created
end
end
def timestamp
var = :"##{mounted_as}_timestamp"
model.instance_variable_get(var) or model.instance_variable_set(var, Time.now.to_i)
end
def crop
if model.crop_x.present?
resize_to_limit(600, 600)
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
img.crop!(x, y, w, h)
end
end
end
end

Answer 1

Given that the images are there, you could reupload them as remote files with user.remote_avatar_url = "the url for this avatar"
To avoid this in the future you have to keep in mind how you are processing the file name. That process is reapplied each time you do recreate_versions!. Put this code in your uploader to get around this:
class AvatarUploader < CarrierWave::Uploader::Base
def filename
if original_filename
if model && model.read_attribute(:avatar).present?
model.read_attribute(:avatar)
else
# new filename
end
end
end
end
You can find more information about this in the following wiki article: https://github.com/jnicklas/carrierwave/wiki/How-to%3A-Create-random-and-unique-filenames-for-all-versioned-files