Rails:缺少要链接的主机！请提供 :host 参数或设置 default_url_options[:host] [英] Rails: Missing host to link to! Please provide :host parameter or set default_url_options[:host]

问题描述

我已经在谷歌上搜索了大约 90 分钟，但仍然没有答案.我在哪里设置 default_url_options?我已经为 config.action_mailer.default_url_options 设置它以解决其他地方的相同错误，但现在我在 RSpec 规范中尝试使用 URL 帮助程序时遇到此错误.我不知道它期望在哪里设置 default_url_options.

I have been googling for about 90 minutes now and still don't have an answer to this. Where do I set default_url_options? I've already set it for config.action_mailer.default_url_options to solve this same bug elsewhere, but now I'm getting this error when trying to use a URL helper inside an RSpec spec. I have no idea where it's expecting default_url_options to be set.

 Failure/Error: listing_url(listing).should match(/\/\d+-\w+$/)
 RuntimeError:
   Missing host to link to! Please provide :host parameter or set default_url_options[:host]
 # ./spec/routing/listing_routing_spec.rb:9:in `block (3 levels) in <top (required)>'

这段代码与 emails/ActionMailer 无关，只是碰巧需要一个 URL 而不是路径.

This code has nothing to do with emails/ActionMailer, it just happens to need a URL instead of a path.

有什么想法吗?

推荐答案

Your::Application.routes.draw do
  default_url_options :host => "example.com"

  # ... snip ...
end

routes.rb 中的某处:)

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