require "dotenv"

Dotenv.instrumenter = ActiveSupport::Notifications

# Watch all loaded env files with Spring
begin
  require "spring/watcher"
  ActiveSupport::Notifications.subscribe(/^dotenv/) do |*args|
    event = ActiveSupport::Notifications::Event.new(*args)
    Spring.watch event.payload[:env].filename if Rails.application
  end
rescue LoadError
  # Spring is not available
end

module Dotenv
  # Dotenv Railtie for using Dotenv to load environment from a file into
  # Rails applications
  class Railtie < Rails::Railtie
    config.before_configuration { load }

    # Public: Load dotenv
    #
    # This will get called during the `before_configuration` callback, but you
    # can manually call `Dotenv::Railtie.load` if you needed it sooner.
    def load
      Dotenv.load(
        root.join(".env.local"),
        root.join(".env.#{Rails.env}"),
        root.join(".env")
      )
    end

    # Internal: `Rails.root` is nil in Rails 4.1 before the application is
    # initialized, so this falls back to the `RAILS_ROOT` environment variable,
    # or the current working directory.
    def root
      Rails.root || Pathname.new(ENV["RAILS_ROOT"] || Dir.pwd)
    end

    # Rails uses `#method_missing` to delegate all class methods to the
    # instance, which means `Kernel#load` gets called here. We don't want that.
    def self.load
      instance.load
    end
  end
end

require "dotenv"

Dotenv.instrumenter = ActiveSupport::Notifications

# Watch all loaded env files with Spring
begin
  require "spring/watcher"
  ActiveSupport::Notifications.subscribe(/^dotenv/) do |*args|
    event = ActiveSupport::Notifications::Event.new(*args)
    Spring.watch event.payload[:env].filename if Rails.application
  end
rescue LoadError
  # Spring is not available
end

module Dotenv
  # Dotenv Railtie for using Dotenv to load environment from a file into
  # Rails applications
  class Railtie < Rails::Railtie
    config.before_configuration { load }

    # Public: Load dotenv
    #
    # This will get called during the `before_configuration` callback, but you
    # can manually call `Dotenv::Railtie.load` if you needed it sooner.
    def load
      Dotenv.load(
        root.join(".env.local"),
        root.join(".env.#{ENV["RACK_ENV"] || Rails.env}"),
        root.join(".env")
      )
    end

    # Internal: `Rails.root` is nil in Rails 4.1 before the application is
    # initialized, so this falls back to the `RAILS_ROOT` environment variable,
    # or the current working directory.
    def root
      Rails.root || Pathname.new(ENV["RAILS_ROOT"] || Dir.pwd)
    end

    # Rails uses `#method_missing` to delegate all class methods to the
    # instance, which means `Kernel#load` gets called here. We don't want that.
    def self.load
      instance.load
    end
  end
end

Use rackenv for loading environment specific .env override files.
Use rackenv for loading environment specific .env override files.
