Question

我在初始化程序中有一些代码，我希望它只在服务器启动时运行，而不是在控制台启动时运行。有没有办法告诉他们分开？

谢谢！

Answer 1

如果你只是需要检查服务器是否正在运行，你可以使用这个

if defined?(Rails::Server)
  # do something usefull
end

Answer 2

我有这个任务的特别助手

#lib/initializer_helpers.rb
module InitializerHelpers

  def self.skip_console_rake_generators &block
    skip(defined?(Rails::Console) || defined?(Rails::Generators) || File.basename($0) == "rake", &block)
  end

  def self.skip_rake_generators &block
    skip(defined?(Rails::Generators) || File.basename($0) == "rake", &block)
  end

  def self.skip_generators &block
    skip(defined?(Rails::Generators), &block)
  end

  def self.skip_console &block
    skip(defined?(Rails::Console), &block)
  end

  private

  def self.skip(condition, &block)
    raise ArgumentError.new("no block given") if block.blank?
    unless condition
      yield
    end
  end

end

# use it
InitializerHelpers.skip_console do
  # not executed in console
end

更新：将此想法提取到gem https://github.com/olegantonyan/initializer_helpers

Answer 3

您可以检查Rails控制台是否已定义：

run_code unless defined?(Rails::Console)

如果没有rails运行它，请跳过初始化程序

3 个答案: