Dump all routable Rails transactions

dump_known_transactions.rb

#! /usr/bin/env ruby

# This dumps all known transactions (including engines) in standard controller#action format to STDOUT
#
# Built against private Rails 5.2.x APIs so success with other Rails versions is likely to be hit and miss.

require_relative "../config/environment"

class CustomInspector < ActionDispatch::Routing::RoutesInspector
  def format(formatter, filter = nil)
    routes_to_display = filter_routes(normalize_filter(filter))
    routes = collect_routes(routes_to_display)
    if routes.none?
      formatter.no_routes(collect_routes(@routes))
      return formatter.result
    end

    formatter.header routes
    formatter.section routes

    @engines.each do |name, engine_routes|
      formatter.section engine_routes
    end

    formatter.result.split("\n").map { |s| s.split.first }.sort.uniq.reject { |s| s.match(/Engine/) }
  end
end

class CustomFormatter < ActionDispatch::Routing::ConsoleFormatter
  def draw_section(routes)
    routes.map { |r| r[:reqs] }
  end
end

inspector = CustomInspector.new(Rails.application.routes.routes)
puts inspector.format(CustomFormatter.new)