Rails Carrierwave Base64 image upload

Question

What is the best way to upload an image from a client to a Rails backend using Carrierwave. Right now our iOS developer is sending in the files as base64, so the requests co

Answer 1

Old question but I had to do a similar thing, upload image from base64 string which was passed on via a json request. This is what I ended up doing:

#some_controller.rb
def upload_image
  set_resource
  image = get_resource.decode_base64_image params[:image_string]
  begin
    if image && get_resource.update(avatar: image)
      render json: get_resource
    else
      render json: {success: false, message: "Failed to upload image. Please try after some time."}
    end
  ensure
    image.close
    image.unlink
  end
end

#some_model.rb
def decode_base64_image(encoded_file)
  decoded_file = Base64.decode64(encoded_file)
  file = Tempfile.new(['image','.jpg']) 
  file.binmode
  file.write decoded_file

  return file
end