How to work with rack using ruby for storing image on cloudinary with gem carrierwave

Question

I am using rack framework with active record and there is no rails , so when i upload an image to cloudinary using carrierwave gem i am getting the following error.

Unexpected error while processing request: uninitialized constant Cloudinary::CarrierWave::Storage::Rails

Answer 1

Based off of this ,you can't use carrierwave gem without rails. You should be able to do something like:

you can use meta-programming in ruby.

Just override the class of Carrierwave and create a storage.rb file :

Cloudinary::CarrierWave::Storage.class_eval do
 /// Your code here...
end