Rails shorthand string enum values

has_string_enum.rb

# frozen_string_literal: true
# app/models/concerns

module HasStringEnum
  extend ActiveSupport::Concern

  class_methods do
    def string_enum(name, values, **options)
      enum(name => values.zip(values).to_h, **options)
    end
  end
end

usage.rb

# frozen_string_literal: true

class MyModel < ApplicationRecord
  include HasStringEnum

  string_enum :rate_type, %w(hourly regular)

  # Instead of repeating the values twice:
  # enum default_rate_type: { hourly: "hourly", weekly: "weekly" }
end