Bug report for ransack with attribute name open

ransack_bug_report_open.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  # Activate the gem you are reporting the issue against.
  gem "rails", '~> 5.2'
  # Activate the gem you are reporting the issue against.
  gem "sqlite3"

  gem 'hamlit'
  gem 'discard' # loading/requiring ransack fails without this. No idea why.
  gem 'draper', '3.1.0'
  gem 'ransack'
end

require "active_record"
require "rack/test"
require "action_controller/railtie"

class TestApp < Rails::Application
  config.root = __dir__
  # config.hosts << "example.org"
  config.session_store :cookie_store, key: "cookie_store_key"
  secrets.secret_key_base = "secret_key_base"

  config.logger = Logger.new($stdout)
  Rails.logger  = config.logger

  routes.draw do
    resources :comments
  end
end

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :comments, force: true do |t|
    t.string :open, default: 'false'
    t.string :author_name
  end
end

class Comment < ActiveRecord::Base
  include Draper::Decoratable
end

class CommentDecorator < Draper::Decorator
  delegate_all
end

class CommentsController < ActionController::Base
  include Rails.application.routes.url_helpers
  include Draper::DecoratesAssigned # grrr not working
  # decorates_assigned :comment

  def index
    render plain: "Home"
  end

  def edit
    @comment = Comment.find(params[:id]).decorate

    template = <<ERB
<%= form_for(@comment) do |f| %>
  <%= f.text_field :open %>
<% end %>
ERB
    render inline: template, layout: false
  end
end

require "minitest/autorun"

class BugTest < Minitest::Test
  include Rack::Test::Methods

  def test_smoke
    get "/comments"
    assert last_response.ok?
  end

  def test_returns_success
    comment = Comment.create!(open: 'true')
    get "/comments/#{comment.id}/edit"
    assert last_response.ok?
  end

  private

  def app
    Rails.application
  end
end