Clash Royale CLAN TAG

Carrierwave: Encoding::UndefinedConversionError (“xFF” from ASCII-8BIT to UTF-8)

I'm trying to upload multiple files to a record called Post, with a json attribute called images, using Carrierwave. But when I try to save the record, I get this error:

Post

images

(0.5ms) ROLLBACK
Completed 401 Unauthorized in 15ms (ActiveRecord: 0.8ms)
Encoding::UndefinedConversionError ("xFF" from ASCII-8BIT to UTF-8):


I've used Carrierwave before and I never got this error. I checked if anyone's had this problem, before, and I didn't find much. This question suggested the activesupport-json_encoder gem, but this gem isn't compatible with Rails 5. Also suggested were the force_encoding method and using a "wb" flag when saving the file, but the Carrierwave code has no place to implement those suggestions.

activesupport-json_encoder

force_encoding

Here's the code I have:

form

<%= form_for @post, :html => {multipart: true}, do |f| %>
<%= f.file_field :images, multiple: true %>
<%= f.submit "submit" %>
<% end %>


posts controller

...
private
def post_params
params.require(:post).permit({images: })
end
end


posts migration

...
create_table :posts do |t|
t.json :images
...


posts uploader

class ImageUploader < CarrierWave::Uploader::Base
include CarrierWave::MiniMagick

storage :fog

def fix_exif_rotation
manipulate! do |img|
img.tap(&:auto_orient)
end
end

process :fix_exif_rotation
process :resize_to_fit => [800, 56000]

version :thumb do
process resize_to_fit: [300, 56000]
end
end


xFF

force_encoding

wb

rb

1 Answer
1

My guess would be that you need to use :string instead of :json in the ActiveRecord::Migration.

:string

:json

ActiveRecord::Migration

class AddImagesToGallery < ActiveRecord::Migration
def change
add_column :galleries, :images, :string, array: true, default: # add images column as array
end
end


You can check following How to: Add more files and remove single file when using default multiple file uploads feature for more.

EDIT - added the reason

The reason why you are getting this error is that the gem activesupport-json_encoder (the one PR is hanging there from 2014) is no longer maintained and is not compatible with rails 5.x.

activesupport-json_encoder

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.