class Parent
    include Mongoid::Document
    
   embeds_many :children, cascade_callbacks: true
end

class Child
   include Mongoid::Document
  
   mount_uploader :image, ImageUploader

   embedded_in :parent
end

`

I am using Mongoid together with carrierwave. I have 2 classes like above. When I create a new Parent. parent.save works and the uploaded image got saved to the embedded child. But when I try to update a Parent, I cannot get the image to upload correctly using Parent.update_attriubutes().