在初始化时设置default_url_options [英] set default_url_options on initialize

问题描述

我需要在我的rails应用程序中的一种环境下强制主机.

I need to force the host in one of the environments in my rails app.

我可以通过添加

  def default_url_options(opts={})
   opts.merge({:host => 'stg.my-host.com'})
  end

在app/controllers/application.rb

in app/controllers/application.rb

但是有没有办法在初始化时设置它，最好在config/environments/...文件中?我想将条件环境逻辑排除在控制器之外.

But is there a way to set this on initialize, preferably in a config/environments/... file? I'd like to keep conditional env logic out of the controller.

但是当我尝试

   config.action_controller.default_url_options = { ... }

甚至

ActionController::Base.default_url_options = { ... }

即使配置中包含换行符，我也会得到未定义的方法".after_initialize {...}

I get "undefined method," even if a wrap in a config.after_initialize { ... }

有什么想法吗?

推荐答案

答案是...这是不可能的，因为default_url_options是作为函数而不是attr实现的.

The answer is...it's impossible because default_url_options is implemented as a function, not an attr.

来自action_pack/action_controller/base.rb:1053:

From action_pack/action_controller/base.rb:1053:

  # Overwrite to implement a number of default options that all url_for-based methods will use. The default options should come in
  # the form of a hash, just like the one you would use for url_for directly. Example:
  #
  #   def default_url_options(options)
  #     { :project => @project.active? ? @project.url_name : "unknown" }
  #   end
  #
  # As you can infer from the example, this is mostly useful for situations where you want to centralize dynamic decisions about the
  # urls as they stem from the business domain. Please note that any individual url_for call can always override the defaults set
  # by this method.
  def default_url_options(options = nil)
  end

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