Method: Spring::Application#preload

Defined in:
lib/spring/application.rb

#preloadObject



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# File 'lib/spring/application.rb', line 83

def preload
  log "preloading app"

  begin
    require "spring/commands"
  ensure
    start_watcher
  end

  require Spring.application_root_path.join("config", "application")

  unless Rails.respond_to?(:gem_version) && Rails.gem_version >= Gem::Version.new('6.0.0')
    raise "Spring only supports Rails >= 6.0.0"
  end

  Rails::Application.initializer :ensure_reloading_is_enabled, group: :all do
    if Rails.application.config.cache_classes
      raise <<-MSG.strip_heredoc
        Spring reloads, and therefore needs the application to have reloading enabled.
        Please, set config.cache_classes to false in config/environments/#{Rails.env}.rb.
      MSG
    end
  end

  require Spring.application_root_path.join("config", "environment")

  disconnect_database

  @preloaded = :success
rescue Exception => e
  @preloaded = :failure
  watcher.add e.backtrace.map { |line| line[/^(.*)\:\d+/, 1] }
  raise e unless initialized?
ensure
  watcher.add loaded_application_features
  watcher.add Spring.gemfile, Spring.gemfile_lock

  if defined?(Rails) && Rails.application
    watcher.add Rails.application.paths["config/initializers"]
    watcher.add Rails.application.paths["config/database"]
    if secrets_path = Rails.application.paths["config/secrets"]
      watcher.add secrets_path
    end
  end
end