class DiceBag::Configuration

This class abstracts access to configuration values, to be used within ERB templates. Currently, the values are read from the environment, as per the Twelve-Factor App principles.

Public Class Methods

new() click to toggle source
# File lib/dice_bag/configuration.rb, line 8
def initialize
  @prefixed = {}
end

Public Instance Methods

[](prefix) click to toggle source

Returns a Configuration::PrefixedWithFallback using the given prefix.

# File lib/dice_bag/configuration.rb, line 14
def [](prefix)
  @prefixed[prefix] ||= PrefixedWithFallback.new(prefix, self)
end
method_missing(name) click to toggle source
# File lib/dice_bag/configuration.rb, line 18
def method_missing(name)
  if name.to_s.end_with?("!")
    ensured_in_production(name)
  else
    ENV[name.to_s.upcase]
  end
end

Private Instance Methods

ensured_in_production(name) click to toggle source
# File lib/dice_bag/configuration.rb, line 28
def ensured_in_production(name)
  variable_name = name.to_s.chomp("!").upcase
  value = ENV[variable_name]
  if in_production? && value.nil?
    raise "Environment variable #{variable_name} required in production but it was not provided"
  end

  value
end
in_production?() click to toggle source
# File lib/dice_bag/configuration.rb, line 38
def in_production?
  (defined?(Rails) && Rails.env.production?) ||
    (defined?(Sinatra) && Sinatra::Application.production?) ||
    ENV["RACK_ENV"] == "production"
end