This is for an issue I am having with the Ruby library Shrine

README.md

Shrine NoMethodError Issue

This gist contains all the files relevant to the issue.

image_uploader.rb

# frozen_string_literal: true

class ImageUploader < Shrine
  # There's actually stuff in here in the actual file, but most of it is sensitive.
  # Rest assured, *nothing* in here is causing the problem.
end

index.html.erb

<!-- Just the image tag -->
<%= image_tag Topic.find(1).icon_url %>

topic.rb

# frozen_string_literal: true

# == Schema Information
#
# Table name: topics
#
#  id          :bigint           not null, primary key
#  description :text             default(""), not null
#  icon_data   :text
#  name        :string           default(""), not null
#  created_at  :datetime         not null
#  updated_at  :datetime         not null
#
class Topic < ApplicationRecord
  include TopicIconUploader::Attachment(:icon)
end

topic_icon_uploader.rb

# frozen_string_literal: true

class TopicIconUploader < ImageUploader
  # Again, since this code is sensitive, this is as much as I can give you. Apologies.

  plugin :default_url

  Attacher.default_url do |**_options|
    '/images/icons/topic.png'
  end
end