no implicit conversion of ActionDispatch::Http::UploadedFile into String

[paulsizer]

I seem to be getting the following error when submitting my form for my model:

no implicit conversion of ActionDispatch::Http::UploadedFile into String

Some details of my setup are below:

Rails 6.0.2.2
Ruby 2.6.0p0
gem 'fog-backblaze', '> 0.3.0’
gem 'shrine-fog', '> 2.0', '>= 2.0.1’
gem 'shrine', '~> 3.2', '>= 3.2.1'

Model

class Show < ApplicationRecord

include ImageUploader::Attachment(:artwork)

end

Image Uploader

class ImageUploader < Shrine
  plugin :store_dimensions

  Attacher.validate do
    validate_max_size 1010241024
    validate_mime_type %w[image/jpeg image/png]
    validate_extension %w[jpg jpeg png]
  end
end

Shrine.rb

require "shrine"
require "shrine/storage/fog"
require "fog/backblaze"

storeb2 = Fog::Storage.new(
  provider: 'backblaze',
  b2_key_id: ‘###',
  b2_key_token: ‘###',
  b2_bucket_name: ’test',
  b2_bucket_id: ‘###'
)

Shrine.storages[:store] = Shrine::Storage::Fog.new(
  connection: storeb2,
  directory: “test",
)

Shrine.storages[:cache] = Shrine::Storage::Fog.new(
  connection: storeb2,
  directory: “test",
)

Shrine.plugin :activerecord
Shrine.plugin :cached_attachment_data
Shrine.plugin :restore_cached_data
Shrine.plugin :validation
Shrine.plugin :validation_helpers

Controller Code Where it is blowing up

def create
 @show = Show.new(show_params)

  if @show.save
    flash[:notice] = "The new show has been added to your account"
    redirect_to @show
  else
    render :new
  end
end

private

def show_params
  params.require(:show).permit(:title, :artwork)
end

Do you know what this could be?

[janko]

Either fog or fog-backblaze could be requiring file content to be given on upload instead of a file object. Either that or an actual File instance is required, which can be obtained using Shrine.with_file.

[paulsizer]

@janko Thanks for your reply, apologises as it’s not really something I am really clued up on. Is this something that I can alter my side through the uploader or some other way?