Setting Custom error message with CarrierWave

Question

I have an Image uploading application running on carrierwave which restrict user from uploading image only of desired extensions \'jpg,jpeg,png\' I have put in place the v

Answer 1

for some reason my ActiveModel did not include the validation module from carrierwave upon calling mount_uploader. I had to do include CarrierWave::Validations::ActiveModel in my model to get the integrity validator.