An extension of ActiveSupport::StringInquirer to have a grouping of environments such that Rails.env.live? checks if the environment is either production OR staging, and Rails.env.trial? to check that the env is neither of those.

string_grouped_inquirer.rb

class RailsEnvInquirer < ActiveSupport::StringInquirer
  def live?
    %w(production staging).include?(self)
  end
  
  def trial?
    !live?
  end
  
  def grouping
    live? ? "live" : "trial"
  end
end

module Rails
  class << self
    def env_with_groupings
      @_env   = nil unless @_env.is_a?(RailsEnvInquirer)
      @_env ||= RailsEnvInquirer.new(ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "development")
    end
    alias_method_chain :env, :groupings
  
    def env_with_groupings=(environment)
      @_env   = nil unless @_env.is_a?(RailsEnvInquirer)
      @_env ||= RailsEnvInquirer.new(environment)
    end
    alias_method_chain :env=, :groupings
  end
end